diff options
Diffstat (limited to '')
| -rw-r--r-- | openaes/Android.mk | 26 | ||||
| -rw-r--r-- | openaes/CHANGELOG | 43 | ||||
| -rw-r--r-- | openaes/CMakeLists.txt | 74 | ||||
| -rw-r--r-- | openaes/LICENSE | 27 | ||||
| -rw-r--r-- | openaes/README | 78 | ||||
| -rw-r--r-- | openaes/VERSION | 1 | ||||
| -rw-r--r-- | openaes/inc/oaes_config.h | 50 | ||||
| -rw-r--r-- | openaes/inc/oaes_lib.h | 172 | ||||
| -rw-r--r-- | openaes/src/isaac/rand.c | 137 | ||||
| -rw-r--r-- | openaes/src/isaac/rand.h | 56 | ||||
| -rw-r--r-- | openaes/src/isaac/standard.h | 57 | ||||
| -rw-r--r-- | openaes/src/oaes.c | 317 | ||||
| -rw-r--r-- | openaes/src/oaes_lib.c | 1429 | ||||
| -rw-r--r-- | openaes/test/test_encrypt.c | 229 | ||||
| -rw-r--r-- | openaes/test/test_keys.c | 248 | ||||
| -rw-r--r-- | openaes/test/test_performance.c | 200 | ||||
| -rw-r--r-- | openaes/test/vt_aes.c | 405 |
17 files changed, 3549 insertions, 0 deletions
diff --git a/openaes/Android.mk b/openaes/Android.mk new file mode 100644 index 000000000..1beefdac4 --- /dev/null +++ b/openaes/Android.mk @@ -0,0 +1,26 @@ +LOCAL_PATH:= $(call my-dir) +include $(CLEAR_VARS) + +ifneq ($(TW_EXCLUDE_ENCRYPTED_BACKUPS), true) + LOCAL_SRC_FILES:= src/oaes.c \ + LOCAL_C_INCLUDES := \ + bootable/recovery/openaes/src/isaac \ + bootable/recovery/openaes/inc + LOCAL_CFLAGS:= -g -c -W + LOCAL_MODULE:=openaes + LOCAL_MODULE_TAGS:= eng + LOCAL_MODULE_CLASS := RECOVERY_EXECUTABLES + LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/sbin + LOCAL_SHARED_LIBRARIES = libopenaes libc + include $(BUILD_EXECUTABLE) + + include $(CLEAR_VARS) + LOCAL_MODULE := libopenaes + LOCAL_MODULE_TAGS := eng + LOCAL_C_INCLUDES := \ + bootable/recovery/openaes/src/isaac \ + bootable/recovery/openaes/inc + LOCAL_SRC_FILES = src/oaes_lib.c src/isaac/rand.c + LOCAL_SHARED_LIBRARIES = libc + include $(BUILD_SHARED_LIBRARY) +endif diff --git a/openaes/CHANGELOG b/openaes/CHANGELOG new file mode 100644 index 000000000..8ea94cf6a --- /dev/null +++ b/openaes/CHANGELOG @@ -0,0 +1,43 @@ +--------------------------------------------------------------------------- +OpenAES-0.7.0 +Nabil S. Al Ramli +www.nalramli.com +--------------------------------------------------------------------------- + +OpenAES-0.7.0 +------------- +* implement oaes command line utility +* defect: oaes_decrypt() does not have a way to tell if pad pattern is accidental + +OpenAES-0.6.0 +------------- +* add stepping pause to vt_aes + +OpenAES-0.5.0 +------------- +* defect: algorithm errors with ExpandKey for 192 bit and 256 bit keys + +OpenAES-0.4.0 +------------- +* add vt_aes test program +* defect: algorithm errors with ShiftRows and MixColumns +* OAES_DEBUG config to step through encryption and decryption +* defect: test_performance crash when printing results +* allow user to specify iv by passing it to oaes_set_option() +* oaes_key_import_data() and oaes_key_export_data() to operate on key data directly +* defect: Access violation in oaes_key_export() + +OpenAES-0.3.0 +------------- +* Add CMake support +* platform independence fixes + +OpenAES-0.2.0 +------------- +* Add performance tests +* Implement CBC mode in AES algorithm +* Performance improvements in oaes_shift_rows() and oaes_inv_shift_rows() + +OpenAES-0.1.0 +------------- +* Implement AES algorithm diff --git a/openaes/CMakeLists.txt b/openaes/CMakeLists.txt new file mode 100644 index 000000000..251d5a3cb --- /dev/null +++ b/openaes/CMakeLists.txt @@ -0,0 +1,74 @@ +# --------------------------------------------------------------------------- +# OpenAES License +# --------------------------------------------------------------------------- +# Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are met: +# +# - Redistributions of source code must retain the above copyright notice, +# this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# --------------------------------------------------------------------------- + +cmake_minimum_required (VERSION 2.8.0) + +project ( "oaes" ) + +include_directories ( + ${CMAKE_CURRENT_SOURCE_DIR}/inc + ${CMAKE_CURRENT_SOURCE_DIR}/src/isaac + ) + +set (SRC + ${CMAKE_CURRENT_SOURCE_DIR}/src/oaes_lib.c + ${CMAKE_CURRENT_SOURCE_DIR}/src/isaac/rand.c + ) + +set (HDR + ${CMAKE_CURRENT_SOURCE_DIR}/inc/oaes_config.h + ${CMAKE_CURRENT_SOURCE_DIR}/inc/oaes_lib.h + ${CMAKE_CURRENT_SOURCE_DIR}/src/isaac/rand.h + ${CMAKE_CURRENT_SOURCE_DIR}/src/isaac/standard.h + ) + +set (SRC_test_encrypt + ${CMAKE_CURRENT_SOURCE_DIR}/test/test_encrypt.c + ) + +set (SRC_test_keys + ${CMAKE_CURRENT_SOURCE_DIR}/test/test_keys.c + ) + +set (SRC_test_performance + ${CMAKE_CURRENT_SOURCE_DIR}/test/test_performance.c + ) + +set (SRC_vt_aes + ${CMAKE_CURRENT_SOURCE_DIR}/test/vt_aes.c + ) + +set (SRC_oaes + ${CMAKE_CURRENT_SOURCE_DIR}/src/oaes.c + ) + +add_executable (test_encrypt ${SRC_test_encrypt} ${SRC} ${HDR}) +add_executable (test_keys ${SRC_test_keys} ${SRC} ${HDR}) +add_executable (test_performance ${SRC_test_performance} ${SRC} ${HDR}) +add_executable (vt_aes ${SRC_vt_aes} ${SRC} ${HDR}) +add_executable (oaes ${SRC_oaes} ${SRC} ${HDR}) diff --git a/openaes/LICENSE b/openaes/LICENSE new file mode 100644 index 000000000..d824e13dd --- /dev/null +++ b/openaes/LICENSE @@ -0,0 +1,27 @@ +--------------------------------------------------------------------------- +OpenAES Licence +--------------------------------------------------------------------------- +Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + - Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. +--------------------------------------------------------------------------- diff --git a/openaes/README b/openaes/README new file mode 100644 index 000000000..6fb957ba8 --- /dev/null +++ b/openaes/README @@ -0,0 +1,78 @@ +--------------------------------------------------------------------------- +OpenAES-0.7.0 +Nabil S. Al Ramli +www.nalramli.com +--------------------------------------------------------------------------- + +License Terms +------------- + +--------------------------------------------------------------------------- +OpenAES Licence +--------------------------------------------------------------------------- +Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + - Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. +--------------------------------------------------------------------------- + +Introduction +------------ + +OpenAES is an open source implementation of the Advanced Encryption +Standard. It is distributed as a portable, lightweight C library that can +be easily integrated into applications. + +Compiling +--------- + +OpenAES has been tested with the GCC as well as VC compilers. It is +necessary to compile the source files located in ./src, and to add ./inc to +the include paths. + +If you are building with OAES_HAVE_ISAAC defined (true by default), then +you also need to link in the source files under ./src/isaac and also add +./src/isaac to the include paths. + +You may edit ./inc/oaes_config.h to modify build options. + +CMake 2.8.0 can be used to build the test programs on different platforms. + +In a Linux command line terminal type: + +cmake . +make + +In Windows, in a Visual Studio command line window type: + +cmake . -G "NMake Makefiles" +nmake + +Usage +----- + +Usage is described in the header file ./inc/oaes_lib.h. + +Samples +------- + +Samples applications are provided in the /test folder. diff --git a/openaes/VERSION b/openaes/VERSION new file mode 100644 index 000000000..831dbdd5b --- /dev/null +++ b/openaes/VERSION @@ -0,0 +1 @@ +OpenAES-0.7.0
\ No newline at end of file diff --git a/openaes/inc/oaes_config.h b/openaes/inc/oaes_config.h new file mode 100644 index 000000000..d887f0312 --- /dev/null +++ b/openaes/inc/oaes_config.h @@ -0,0 +1,50 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#ifndef _OAES_CONFIG_H +#define _OAES_CONFIG_H + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef OAES_HAVE_ISAAC +#define OAES_HAVE_ISAAC 1 +#endif // OAES_HAVE_ISAAC + +#ifndef OAES_DEBUG +#define OAES_DEBUG 0 +#endif // OAES_DEBUG + +#ifdef __cplusplus +} +#endif + +#endif // _OAES_CONFIG_H diff --git a/openaes/inc/oaes_lib.h b/openaes/inc/oaes_lib.h new file mode 100644 index 000000000..fd89a7084 --- /dev/null +++ b/openaes/inc/oaes_lib.h @@ -0,0 +1,172 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#ifndef _OAES_LIB_H +#define _OAES_LIB_H + +#include <stdint.h> + +#ifdef __cplusplus +extern "C" { +#endif + +#define OAES_VERSION "0.7.0" +#define OAES_BLOCK_SIZE 16 + +typedef void OAES_CTX; + +typedef enum +{ + OAES_RET_FIRST = 0, + OAES_RET_SUCCESS = 0, + OAES_RET_UNKNOWN, + OAES_RET_ARG1, + OAES_RET_ARG2, + OAES_RET_ARG3, + OAES_RET_ARG4, + OAES_RET_ARG5, + OAES_RET_NOKEY, + OAES_RET_MEM, + OAES_RET_BUF, + OAES_RET_HEADER, + OAES_RET_COUNT +} OAES_RET; + +/* + * oaes_set_option() takes one of these values for its [option] parameter + * some options accept either an optional or a required [value] parameter + */ +// no option +#define OAES_OPTION_NONE 0 +// enable ECB mode, disable CBC mode +#define OAES_OPTION_ECB 1 +// enable CBC mode, disable ECB mode +// value is optional, may pass uint8_t iv[OAES_BLOCK_SIZE] to specify +// the value of the initialization vector, iv +#define OAES_OPTION_CBC 2 + +#ifdef OAES_DEBUG +typedef int ( * oaes_step_cb ) ( + const uint8_t state[OAES_BLOCK_SIZE], + const char * step_name, + int step_count, + void * user_data ); +// enable state stepping mode +// value is required, must pass oaes_step_cb to receive the state at each step +#define OAES_OPTION_STEP_ON 4 +// disable state stepping mode +#define OAES_OPTION_STEP_OFF 8 +#endif // OAES_DEBUG + +typedef uint16_t OAES_OPTION; + +/* + * // usage: + * + * OAES_CTX * ctx = oaes_alloc(); + * . + * . + * . + * { + * oaes_gen_key_xxx( ctx ); + * { + * oaes_key_export( ctx, _buf, &_buf_len ); + * // or + * oaes_key_export_data( ctx, _buf, &_buf_len );\ + * } + * } + * // or + * { + * oaes_key_import( ctx, _buf, _buf_len ); + * // or + * oaes_key_import_data( ctx, _buf, _buf_len ); + * } + * . + * . + * . + * oaes_encrypt( ctx, m, m_len, c, &c_len ); + * . + * . + * . + * oaes_decrypt( ctx, c, c_len, m, &m_len ); + * . + * . + * . + * oaes_free( &ctx ); + */ + +OAES_CTX * oaes_alloc(); + +OAES_RET oaes_free( OAES_CTX ** ctx ); + +OAES_RET oaes_set_option( OAES_CTX * ctx, + OAES_OPTION option, const void * value ); + +OAES_RET oaes_key_gen_128( OAES_CTX * ctx ); + +OAES_RET oaes_key_gen_192( OAES_CTX * ctx ); + +OAES_RET oaes_key_gen_256( OAES_CTX * ctx ); + +// export key with header information +// set data == NULL to get the required data_len +OAES_RET oaes_key_export( OAES_CTX * ctx, + uint8_t * data, size_t * data_len ); + +// directly export the data from key +// set data == NULL to get the required data_len +OAES_RET oaes_key_export_data( OAES_CTX * ctx, + uint8_t * data, size_t * data_len ); + +// import key with header information +OAES_RET oaes_key_import( OAES_CTX * ctx, + const uint8_t * data, size_t data_len ); + +// directly import data into key +OAES_RET oaes_key_import_data( OAES_CTX * ctx, + const uint8_t * data, size_t data_len ); + +// set c == NULL to get the required c_len +OAES_RET oaes_encrypt( OAES_CTX * ctx, + const uint8_t * m, size_t m_len, uint8_t * c, size_t * c_len ); + +// set m == NULL to get the required m_len +OAES_RET oaes_decrypt( OAES_CTX * ctx, + const uint8_t * c, size_t c_len, uint8_t * m, size_t * m_len ); + +// set buf == NULL to get the required buf_len +OAES_RET oaes_sprintf( + char * buf, size_t * buf_len, const uint8_t * data, size_t data_len ); + +#ifdef __cplusplus +} +#endif + +#endif // _OAES_LIB_H diff --git a/openaes/src/isaac/rand.c b/openaes/src/isaac/rand.c new file mode 100644 index 000000000..63babc721 --- /dev/null +++ b/openaes/src/isaac/rand.c @@ -0,0 +1,137 @@ +/* +------------------------------------------------------------------------------ +rand.c: By Bob Jenkins. My random number generator, ISAAC. Public Domain. +MODIFIED: + 960327: Creation (addition of randinit, really) + 970719: use context, not global variables, for internal state + 980324: added main (ifdef'ed out), also rearranged randinit() + 010626: Note that this is public domain +------------------------------------------------------------------------------ +*/ +#ifndef STANDARD +#include "standard.h" +#endif +#ifndef RAND +#include "rand.h" +#endif + + +#define ind(mm,x) (*(ub4 *)((ub1 *)(mm) + ((x) & ((RANDSIZ-1)<<2)))) +#define rngstep(mix,a,b,mm,m,m2,r,x) \ +{ \ + x = *m; \ + a = (a^(mix)) + *(m2++); \ + *(m++) = y = ind(mm,x) + a + b; \ + *(r++) = b = ind(mm,y>>RANDSIZL) + x; \ +} + +void isaac(ctx) +randctx *ctx; +{ + register ub4 a,b,x,y,*m,*mm,*m2,*r,*mend; + mm=ctx->randmem; r=ctx->randrsl; + a = ctx->randa; b = ctx->randb + (++ctx->randc); + for (m = mm, mend = m2 = m+(RANDSIZ/2); m<mend; ) + { + rngstep( a<<13, a, b, mm, m, m2, r, x); + rngstep( a>>6 , a, b, mm, m, m2, r, x); + rngstep( a<<2 , a, b, mm, m, m2, r, x); + rngstep( a>>16, a, b, mm, m, m2, r, x); + } + for (m2 = mm; m2<mend; ) + { + rngstep( a<<13, a, b, mm, m, m2, r, x); + rngstep( a>>6 , a, b, mm, m, m2, r, x); + rngstep( a<<2 , a, b, mm, m, m2, r, x); + rngstep( a>>16, a, b, mm, m, m2, r, x); + } + ctx->randb = b; ctx->randa = a; +} + + +#define mix(a,b,c,d,e,f,g,h) \ +{ \ + a^=b<<11; d+=a; b+=c; \ + b^=c>>2; e+=b; c+=d; \ + c^=d<<8; f+=c; d+=e; \ + d^=e>>16; g+=d; e+=f; \ + e^=f<<10; h+=e; f+=g; \ + f^=g>>4; a+=f; g+=h; \ + g^=h<<8; b+=g; h+=a; \ + h^=a>>9; c+=h; a+=b; \ +} + +/* if (flag==TRUE), then use the contents of randrsl[] to initialize mm[]. */ +void randinit(ctx, flag) +randctx *ctx; +word flag; +{ + word i; + ub4 a,b,c,d,e,f,g,h; + ub4 *m,*r; + ctx->randa = ctx->randb = ctx->randc = 0; + m=ctx->randmem; + r=ctx->randrsl; + a=b=c=d=e=f=g=h=0x9e3779b9; /* the golden ratio */ + + for (i=0; i<4; ++i) /* scramble it */ + { + mix(a,b,c,d,e,f,g,h); + } + + if (flag) + { + /* initialize using the contents of r[] as the seed */ + for (i=0; i<RANDSIZ; i+=8) + { + a+=r[i ]; b+=r[i+1]; c+=r[i+2]; d+=r[i+3]; + e+=r[i+4]; f+=r[i+5]; g+=r[i+6]; h+=r[i+7]; + mix(a,b,c,d,e,f,g,h); + m[i ]=a; m[i+1]=b; m[i+2]=c; m[i+3]=d; + m[i+4]=e; m[i+5]=f; m[i+6]=g; m[i+7]=h; + } + /* do a second pass to make all of the seed affect all of m */ + for (i=0; i<RANDSIZ; i+=8) + { + a+=m[i ]; b+=m[i+1]; c+=m[i+2]; d+=m[i+3]; + e+=m[i+4]; f+=m[i+5]; g+=m[i+6]; h+=m[i+7]; + mix(a,b,c,d,e,f,g,h); + m[i ]=a; m[i+1]=b; m[i+2]=c; m[i+3]=d; + m[i+4]=e; m[i+5]=f; m[i+6]=g; m[i+7]=h; + } + } + else + { + /* fill in m[] with messy stuff */ + for (i=0; i<RANDSIZ; i+=8) + { + mix(a,b,c,d,e,f,g,h); + m[i ]=a; m[i+1]=b; m[i+2]=c; m[i+3]=d; + m[i+4]=e; m[i+5]=f; m[i+6]=g; m[i+7]=h; + } + } + + isaac(ctx); /* fill in the first set of results */ + ctx->randcnt=RANDSIZ; /* prepare to use the first set of results */ +} + + +#ifdef NEVER +int main() +{ + ub4 i,j; + randctx ctx; + ctx.randa=ctx.randb=ctx.randc=(ub4)0; + for (i=0; i<256; ++i) ctx.randrsl[i]=(ub4)0; + randinit(&ctx, TRUE); + for (i=0; i<2; ++i) + { + isaac(&ctx); + for (j=0; j<256; ++j) + { + printf("%.8lx",ctx.randrsl[j]); + if ((j&7)==7) printf("\n"); + } + } +} +#endif diff --git a/openaes/src/isaac/rand.h b/openaes/src/isaac/rand.h new file mode 100644 index 000000000..73f6e3e44 --- /dev/null +++ b/openaes/src/isaac/rand.h @@ -0,0 +1,56 @@ +/* +------------------------------------------------------------------------------ +rand.h: definitions for a random number generator +By Bob Jenkins, 1996, Public Domain +MODIFIED: + 960327: Creation (addition of randinit, really) + 970719: use context, not global variables, for internal state + 980324: renamed seed to flag + 980605: recommend RANDSIZL=4 for noncryptography. + 010626: note this is public domain +------------------------------------------------------------------------------ +*/ +#ifndef STANDARD +#include "standard.h" +#endif + +#ifndef RAND +#define RAND +#define RANDSIZL (8) +#define RANDSIZ (1<<RANDSIZL) + +/* context of random number generator */ +struct randctx +{ + ub4 randcnt; + ub4 randrsl[RANDSIZ]; + ub4 randmem[RANDSIZ]; + ub4 randa; + ub4 randb; + ub4 randc; +}; +typedef struct randctx randctx; + +/* +------------------------------------------------------------------------------ + If (flag==TRUE), then use the contents of randrsl[0..RANDSIZ-1] as the seed. +------------------------------------------------------------------------------ +*/ +void randinit(/*_ randctx *r, word flag _*/); + +void isaac(/*_ randctx *r _*/); + + +/* +------------------------------------------------------------------------------ + Call rand(/o_ randctx *r _o/) to retrieve a single 32-bit random value +------------------------------------------------------------------------------ +*/ +#define rand(r) \ + (!(r)->randcnt-- ? \ + (isaac(r), (r)->randcnt=RANDSIZ-1, (r)->randrsl[(r)->randcnt]) : \ + (r)->randrsl[(r)->randcnt]) + +#endif /* RAND */ + + diff --git a/openaes/src/isaac/standard.h b/openaes/src/isaac/standard.h new file mode 100644 index 000000000..202a5d658 --- /dev/null +++ b/openaes/src/isaac/standard.h @@ -0,0 +1,57 @@ +/* +------------------------------------------------------------------------------ +Standard definitions and types, Bob Jenkins +------------------------------------------------------------------------------ +*/ +#ifndef STANDARD +# define STANDARD +# ifndef STDIO +# include <stdio.h> +# define STDIO +# endif +# ifndef STDDEF +# include <stddef.h> +# define STDDEF +# endif +typedef unsigned long long ub8; +#define UB8MAXVAL 0xffffffffffffffffLL +#define UB8BITS 64 +typedef signed long long sb8; +#define SB8MAXVAL 0x7fffffffffffffffLL +typedef unsigned long int ub4; /* unsigned 4-byte quantities */ +#define UB4MAXVAL 0xffffffff +typedef signed long int sb4; +#define UB4BITS 32 +#define SB4MAXVAL 0x7fffffff +typedef unsigned short int ub2; +#define UB2MAXVAL 0xffff +#define UB2BITS 16 +typedef signed short int sb2; +#define SB2MAXVAL 0x7fff +typedef unsigned char ub1; +#define UB1MAXVAL 0xff +#define UB1BITS 8 +typedef signed char sb1; /* signed 1-byte quantities */ +#define SB1MAXVAL 0x7f +typedef int word; /* fastest type available */ + +#define bis(target,mask) ((target) |= (mask)) +#define bic(target,mask) ((target) &= ~(mask)) +#define bit(target,mask) ((target) & (mask)) +#ifndef min +# define min(a,b) (((a)<(b)) ? (a) : (b)) +#endif /* min */ +#ifndef max +# define max(a,b) (((a)<(b)) ? (b) : (a)) +#endif /* max */ +#ifndef align +# define align(a) (((ub4)a+(sizeof(void *)-1))&(~(sizeof(void *)-1))) +#endif /* align */ +#ifndef abs +# define abs(a) (((a)>0) ? (a) : -(a)) +#endif +#define TRUE 1 +#define FALSE 0 +#define SUCCESS 0 /* 1 on VAX */ + +#endif /* STANDARD */ diff --git a/openaes/src/oaes.c b/openaes/src/oaes.c new file mode 100644 index 000000000..9a5d26849 --- /dev/null +++ b/openaes/src/oaes.c @@ -0,0 +1,317 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define OAES_DEBUG 1 +#include "../inc/oaes_lib.h" + +#if defined(_WIN32) && !defined(__SYMBIAN32__) +#include <io.h> +#else +__inline static int setmode(int a, int b) +{ + return 0; +} +#endif + +#ifndef __max + #define __max(a,b) (((a) > (b)) ? (a) : (b)) +#endif // __max + +#ifndef __min + #define __min(a,b) (((a) < (b)) ? (a) : (b)) +#endif // __min + +#define OAES_BUF_LEN_ENC 4096 - 2 * OAES_BLOCK_SIZE +#define OAES_BUF_LEN_DEC 4096 + +static void usage( const char * exe_name ) +{ + if( NULL == exe_name ) + return; + + fprintf( stderr, + "Usage:\n" + " %s <command> --key <key_data> [options]\n" + "\n" + " command:\n" + " enc: encrypt\n" + " dec: decrypt\n" + "\n" + " options:\n" + " --ecb: use ecb mode instead of cbc\n" + " --in <path_in>\n" + " --out <path_out>\n" + "\n", + exe_name + ); +} + +int main(int argc, char** argv) +{ + size_t _i = 0, _j = 0; + OAES_CTX * ctx = NULL; + uint8_t _buf_in[OAES_BUF_LEN_DEC]; + uint8_t *_buf_out = NULL, _key_data[32] = ""; + size_t _buf_in_len = 0, _buf_out_len = 0, _read_len = 0; + size_t _key_data_len = 0; + short _is_ecb = 0; + char *_file_in = NULL, *_file_out = NULL; + int _op = 0; + FILE *_f_in = stdin, *_f_out = stdout; + + fprintf( stderr, "\n" + "*******************************************************************************\n" + "* OpenAES %-10s *\n" + "* Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com *\n" + "*******************************************************************************\n\n", + OAES_VERSION ); + + // pad the key + for( _j = 0; _j < 32; _j++ ) + _key_data[_j] = _j + 1; + + if( argc < 2 ) + { + usage( argv[0] ); + return EXIT_FAILURE; + } + + if( 0 == strcmp( argv[1], "enc" ) ) + { + _op = 0; + _read_len = OAES_BUF_LEN_ENC; + } + else if( 0 == strcmp( argv[1], "dec" ) ) + { + _op = 1; + _read_len = OAES_BUF_LEN_DEC; + } + else + { + fprintf(stderr, "Error: Unknown command '%s'.", argv[1]); + usage( argv[0] ); + return EXIT_FAILURE; + } + + for( _i = 2; _i < argc; _i++ ) + { + int _found = 0; + + if( 0 == strcmp( argv[_i], "--ecb" ) ) + { + _found = 1; + _is_ecb = 1; + } + + if( 0 == strcmp( argv[_i], "--key" ) ) + { + _found = 1; + _i++; // key_data + if( _i >= argc ) + { + fprintf(stderr, "Error: No value specified for '%s'.\n", + "--key"); + usage( argv[0] ); + return EXIT_FAILURE; + } + _key_data_len = strlen(argv[_i]); + if( 16 >= _key_data_len ) + _key_data_len = 16; + else if( 24 >= _key_data_len ) + _key_data_len = 24; + else + _key_data_len = 32; + memcpy(_key_data, argv[_i], __min(32, strlen(argv[_i]))); + } + + if( 0 == strcmp( argv[_i], "--in" ) ) + { + _found = 1; + _i++; // path_in + if( _i >= argc ) + { + fprintf(stderr, "Error: No value specified for '%s'.\n", + "--in"); + usage( argv[0] ); + return EXIT_FAILURE; + } + _file_in = argv[_i]; + } + + if( 0 == strcmp( argv[_i], "--out" ) ) + { + _found = 1; + _i++; // path_out + if( _i >= argc ) + { + fprintf(stderr, "Error: No value specified for '%s'.\n", + "--out"); + usage( argv[0] ); + return EXIT_FAILURE; + } + _file_out = argv[_i]; + } + + if( 0 == _found ) + { + fprintf(stderr, "Error: Invalid option '%s'.\n", argv[_i]); + usage( argv[0] ); + return EXIT_FAILURE; + } + } + + if( 0 == _key_data_len ) + { + fprintf(stderr, "Error: --key must be specified.\n"); + return EXIT_FAILURE; + } + + if( _file_in ) + { + _f_in = fopen(_file_in, "rb"); + if( NULL == _f_in ) + { + fprintf(stderr, + "Error: Failed to open '-%s' for reading.\n", _file_in); + return EXIT_FAILURE; + } + } + else + { + if( setmode(fileno(stdin), 0x8000) < 0 ) + fprintf(stderr,"Error: Failed in setmode().\n"); + _f_in = stdin; + } + + if( _file_out ) + { + _f_out = fopen(_file_out, "wb"); + if( NULL == _f_out ) + { + fprintf(stderr, + "Error: Failed to open '-%s' for writing.\n", _file_out); + if( _file_in ) + fclose(_f_in); + return EXIT_FAILURE; + } + } + else + { + if( setmode(fileno(stdout), 0x8000) < 0 ) + fprintf(stderr, "Error: Failed in setmode().\n"); + _f_out = stdout; + } + + ctx = oaes_alloc(); + if( NULL == ctx ) + { + fprintf(stderr, "Error: Failed to initialize OAES.\n"); + if( _file_in ) + fclose(_f_in); + if( _file_out ) + fclose(_f_out); + return EXIT_FAILURE; + } + if( _is_ecb ) + if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) ) + fprintf(stderr, "Error: Failed to set OAES options.\n"); + + oaes_key_import_data( ctx, _key_data, _key_data_len ); + + while( _buf_in_len = + fread(_buf_in, sizeof(uint8_t), _read_len, _f_in) ) + { + switch(_op) + { + case 0: + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + _buf_in, _buf_in_len, NULL, &_buf_out_len ) ) + fprintf( stderr, + "Error: Failed to retrieve required buffer size for " + "encryption.\n" ); + _buf_out = (uint8_t *) calloc( _buf_out_len, sizeof( char ) ); + if( NULL == _buf_out ) + { + fprintf(stderr, "Error: Failed to allocate memory.\n" ); + if( _file_in ) + fclose(_f_in); + if( _file_out ) + fclose(_f_out); + return EXIT_FAILURE; + } + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + _buf_in, _buf_in_len, _buf_out, &_buf_out_len ) ) + fprintf(stderr, "Error: Encryption failed.\n"); + fwrite(_buf_out, sizeof(uint8_t), _buf_out_len, _f_out); + free(_buf_out); + break; + case 1: + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _buf_in, _buf_in_len, NULL, &_buf_out_len ) ) + fprintf( stderr, + "Error: Failed to retrieve required buffer size for " + "encryption.\n" ); + _buf_out = (uint8_t *) calloc( _buf_out_len, sizeof( char ) ); + if( NULL == _buf_out ) + { + fprintf(stderr, "Error: Failed to allocate memory.\n" ); + free( _buf_out ); + if( _file_in ) + fclose(_f_in); + if( _file_out ) + fclose(_f_out); + return EXIT_FAILURE; + } + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _buf_in, _buf_in_len, _buf_out, &_buf_out_len ) ) + fprintf(stderr, "Error: Decryption failed.\n"); + fwrite(_buf_out, sizeof(uint8_t), _buf_out_len, _f_out); + free(_buf_out); + break; + default: + break; + } + } + + + if( OAES_RET_SUCCESS != oaes_free( &ctx ) ) + fprintf(stderr, "Error: Failed to uninitialize OAES.\n"); + + if( _file_in ) + fclose(_f_in); + if( _file_out ) + fclose(_f_out); + + return (EXIT_SUCCESS); +} diff --git a/openaes/src/oaes_lib.c b/openaes/src/oaes_lib.c new file mode 100644 index 000000000..7cfdc1c06 --- /dev/null +++ b/openaes/src/oaes_lib.c @@ -0,0 +1,1429 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ +static const char _NR[] = { + 0x4e,0x61,0x62,0x69,0x6c,0x20,0x53,0x2e,0x20, + 0x41,0x6c,0x20,0x52,0x61,0x6d,0x6c,0x69,0x00 }; + +#include <stddef.h> +#include <time.h> +#include <sys/timeb.h> +#include <malloc.h> +#include <string.h> + +#ifdef WIN32 +#include <process.h> +#endif + +#include "oaes_config.h" +#include "oaes_lib.h" + +#ifdef OAES_HAVE_ISAAC +#include "rand.h" +#endif // OAES_HAVE_ISAAC + +#define OAES_RKEY_LEN 4 +#define OAES_COL_LEN 4 +#define OAES_ROUND_BASE 7 + +// the block is padded +#define OAES_FLAG_PAD 0x01 + +#ifndef min +# define min(a,b) (((a)<(b)) ? (a) : (b)) +#endif /* min */ + +typedef struct _oaes_key +{ + size_t data_len; + uint8_t *data; + size_t exp_data_len; + uint8_t *exp_data; + size_t num_keys; + size_t key_base; +} oaes_key; + +typedef struct _oaes_ctx +{ +#ifdef OAES_HAVE_ISAAC + randctx * rctx; +#endif // OAES_HAVE_ISAAC + +#ifdef OAES_DEBUG + oaes_step_cb step_cb; +#endif // OAES_DEBUG + + oaes_key * key; + OAES_OPTION options; + uint8_t iv[OAES_BLOCK_SIZE]; +} oaes_ctx; + +// "OAES<8-bit header version><8-bit type><16-bit options><8-bit flags><56-bit reserved>" +static uint8_t oaes_header[OAES_BLOCK_SIZE] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x4f, 0x41, 0x45, 0x53, 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; +static uint8_t oaes_gf_8[] = { + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 }; + +static uint8_t oaes_sub_byte_value[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, + /*1*/ 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, + /*2*/ 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, + /*3*/ 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, + /*4*/ 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, + /*5*/ 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, + /*6*/ 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, + /*7*/ 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, + /*8*/ 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, + /*9*/ 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, + /*a*/ 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, + /*b*/ 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, + /*c*/ 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, + /*d*/ 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, + /*e*/ 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, + /*f*/ 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16, +}; + +static uint8_t oaes_inv_sub_byte_value[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, + /*1*/ 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, + /*2*/ 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, + /*3*/ 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, + /*4*/ 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, + /*5*/ 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, + /*6*/ 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, + /*7*/ 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, + /*8*/ 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, + /*9*/ 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, + /*a*/ 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, + /*b*/ 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, + /*c*/ 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, + /*d*/ 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, + /*e*/ 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, + /*f*/ 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d, +}; + +static uint8_t oaes_gf_mul_2[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, + /*1*/ 0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e, + /*2*/ 0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e, 0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, + /*3*/ 0x60, 0x62, 0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70, 0x72, 0x74, 0x76, 0x78, 0x7a, 0x7c, 0x7e, + /*4*/ 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e, + /*5*/ 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae, 0xb0, 0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe, + /*6*/ 0xc0, 0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde, + /*7*/ 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, 0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe, + /*8*/ 0x1b, 0x19, 0x1f, 0x1d, 0x13, 0x11, 0x17, 0x15, 0x0b, 0x09, 0x0f, 0x0d, 0x03, 0x01, 0x07, 0x05, + /*9*/ 0x3b, 0x39, 0x3f, 0x3d, 0x33, 0x31, 0x37, 0x35, 0x2b, 0x29, 0x2f, 0x2d, 0x23, 0x21, 0x27, 0x25, + /*a*/ 0x5b, 0x59, 0x5f, 0x5d, 0x53, 0x51, 0x57, 0x55, 0x4b, 0x49, 0x4f, 0x4d, 0x43, 0x41, 0x47, 0x45, + /*b*/ 0x7b, 0x79, 0x7f, 0x7d, 0x73, 0x71, 0x77, 0x75, 0x6b, 0x69, 0x6f, 0x6d, 0x63, 0x61, 0x67, 0x65, + /*c*/ 0x9b, 0x99, 0x9f, 0x9d, 0x93, 0x91, 0x97, 0x95, 0x8b, 0x89, 0x8f, 0x8d, 0x83, 0x81, 0x87, 0x85, + /*d*/ 0xbb, 0xb9, 0xbf, 0xbd, 0xb3, 0xb1, 0xb7, 0xb5, 0xab, 0xa9, 0xaf, 0xad, 0xa3, 0xa1, 0xa7, 0xa5, + /*e*/ 0xdb, 0xd9, 0xdf, 0xdd, 0xd3, 0xd1, 0xd7, 0xd5, 0xcb, 0xc9, 0xcf, 0xcd, 0xc3, 0xc1, 0xc7, 0xc5, + /*f*/ 0xfb, 0xf9, 0xff, 0xfd, 0xf3, 0xf1, 0xf7, 0xf5, 0xeb, 0xe9, 0xef, 0xed, 0xe3, 0xe1, 0xe7, 0xe5, +}; + +static uint8_t oaes_gf_mul_3[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x00, 0x03, 0x06, 0x05, 0x0c, 0x0f, 0x0a, 0x09, 0x18, 0x1b, 0x1e, 0x1d, 0x14, 0x17, 0x12, 0x11, + /*1*/ 0x30, 0x33, 0x36, 0x35, 0x3c, 0x3f, 0x3a, 0x39, 0x28, 0x2b, 0x2e, 0x2d, 0x24, 0x27, 0x22, 0x21, + /*2*/ 0x60, 0x63, 0x66, 0x65, 0x6c, 0x6f, 0x6a, 0x69, 0x78, 0x7b, 0x7e, 0x7d, 0x74, 0x77, 0x72, 0x71, + /*3*/ 0x50, 0x53, 0x56, 0x55, 0x5c, 0x5f, 0x5a, 0x59, 0x48, 0x4b, 0x4e, 0x4d, 0x44, 0x47, 0x42, 0x41, + /*4*/ 0xc0, 0xc3, 0xc6, 0xc5, 0xcc, 0xcf, 0xca, 0xc9, 0xd8, 0xdb, 0xde, 0xdd, 0xd4, 0xd7, 0xd2, 0xd1, + /*5*/ 0xf0, 0xf3, 0xf6, 0xf5, 0xfc, 0xff, 0xfa, 0xf9, 0xe8, 0xeb, 0xee, 0xed, 0xe4, 0xe7, 0xe2, 0xe1, + /*6*/ 0xa0, 0xa3, 0xa6, 0xa5, 0xac, 0xaf, 0xaa, 0xa9, 0xb8, 0xbb, 0xbe, 0xbd, 0xb4, 0xb7, 0xb2, 0xb1, + /*7*/ 0x90, 0x93, 0x96, 0x95, 0x9c, 0x9f, 0x9a, 0x99, 0x88, 0x8b, 0x8e, 0x8d, 0x84, 0x87, 0x82, 0x81, + /*8*/ 0x9b, 0x98, 0x9d, 0x9e, 0x97, 0x94, 0x91, 0x92, 0x83, 0x80, 0x85, 0x86, 0x8f, 0x8c, 0x89, 0x8a, + /*9*/ 0xab, 0xa8, 0xad, 0xae, 0xa7, 0xa4, 0xa1, 0xa2, 0xb3, 0xb0, 0xb5, 0xb6, 0xbf, 0xbc, 0xb9, 0xba, + /*a*/ 0xfb, 0xf8, 0xfd, 0xfe, 0xf7, 0xf4, 0xf1, 0xf2, 0xe3, 0xe0, 0xe5, 0xe6, 0xef, 0xec, 0xe9, 0xea, + /*b*/ 0xcb, 0xc8, 0xcd, 0xce, 0xc7, 0xc4, 0xc1, 0xc2, 0xd3, 0xd0, 0xd5, 0xd6, 0xdf, 0xdc, 0xd9, 0xda, + /*c*/ 0x5b, 0x58, 0x5d, 0x5e, 0x57, 0x54, 0x51, 0x52, 0x43, 0x40, 0x45, 0x46, 0x4f, 0x4c, 0x49, 0x4a, + /*d*/ 0x6b, 0x68, 0x6d, 0x6e, 0x67, 0x64, 0x61, 0x62, 0x73, 0x70, 0x75, 0x76, 0x7f, 0x7c, 0x79, 0x7a, + /*e*/ 0x3b, 0x38, 0x3d, 0x3e, 0x37, 0x34, 0x31, 0x32, 0x23, 0x20, 0x25, 0x26, 0x2f, 0x2c, 0x29, 0x2a, + /*f*/ 0x0b, 0x08, 0x0d, 0x0e, 0x07, 0x04, 0x01, 0x02, 0x13, 0x10, 0x15, 0x16, 0x1f, 0x1c, 0x19, 0x1a, +}; + +static uint8_t oaes_gf_mul_9[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x00, 0x09, 0x12, 0x1b, 0x24, 0x2d, 0x36, 0x3f, 0x48, 0x41, 0x5a, 0x53, 0x6c, 0x65, 0x7e, 0x77, + /*1*/ 0x90, 0x99, 0x82, 0x8b, 0xb4, 0xbd, 0xa6, 0xaf, 0xd8, 0xd1, 0xca, 0xc3, 0xfc, 0xf5, 0xee, 0xe7, + /*2*/ 0x3b, 0x32, 0x29, 0x20, 0x1f, 0x16, 0x0d, 0x04, 0x73, 0x7a, 0x61, 0x68, 0x57, 0x5e, 0x45, 0x4c, + /*3*/ 0xab, 0xa2, 0xb9, 0xb0, 0x8f, 0x86, 0x9d, 0x94, 0xe3, 0xea, 0xf1, 0xf8, 0xc7, 0xce, 0xd5, 0xdc, + /*4*/ 0x76, 0x7f, 0x64, 0x6d, 0x52, 0x5b, 0x40, 0x49, 0x3e, 0x37, 0x2c, 0x25, 0x1a, 0x13, 0x08, 0x01, + /*5*/ 0xe6, 0xef, 0xf4, 0xfd, 0xc2, 0xcb, 0xd0, 0xd9, 0xae, 0xa7, 0xbc, 0xb5, 0x8a, 0x83, 0x98, 0x91, + /*6*/ 0x4d, 0x44, 0x5f, 0x56, 0x69, 0x60, 0x7b, 0x72, 0x05, 0x0c, 0x17, 0x1e, 0x21, 0x28, 0x33, 0x3a, + /*7*/ 0xdd, 0xd4, 0xcf, 0xc6, 0xf9, 0xf0, 0xeb, 0xe2, 0x95, 0x9c, 0x87, 0x8e, 0xb1, 0xb8, 0xa3, 0xaa, + /*8*/ 0xec, 0xe5, 0xfe, 0xf7, 0xc8, 0xc1, 0xda, 0xd3, 0xa4, 0xad, 0xb6, 0xbf, 0x80, 0x89, 0x92, 0x9b, + /*9*/ 0x7c, 0x75, 0x6e, 0x67, 0x58, 0x51, 0x4a, 0x43, 0x34, 0x3d, 0x26, 0x2f, 0x10, 0x19, 0x02, 0x0b, + /*a*/ 0xd7, 0xde, 0xc5, 0xcc, 0xf3, 0xfa, 0xe1, 0xe8, 0x9f, 0x96, 0x8d, 0x84, 0xbb, 0xb2, 0xa9, 0xa0, + /*b*/ 0x47, 0x4e, 0x55, 0x5c, 0x63, 0x6a, 0x71, 0x78, 0x0f, 0x06, 0x1d, 0x14, 0x2b, 0x22, 0x39, 0x30, + /*c*/ 0x9a, 0x93, 0x88, 0x81, 0xbe, 0xb7, 0xac, 0xa5, 0xd2, 0xdb, 0xc0, 0xc9, 0xf6, 0xff, 0xe4, 0xed, + /*d*/ 0x0a, 0x03, 0x18, 0x11, 0x2e, 0x27, 0x3c, 0x35, 0x42, 0x4b, 0x50, 0x59, 0x66, 0x6f, 0x74, 0x7d, + /*e*/ 0xa1, 0xa8, 0xb3, 0xba, 0x85, 0x8c, 0x97, 0x9e, 0xe9, 0xe0, 0xfb, 0xf2, 0xcd, 0xc4, 0xdf, 0xd6, + /*f*/ 0x31, 0x38, 0x23, 0x2a, 0x15, 0x1c, 0x07, 0x0e, 0x79, 0x70, 0x6b, 0x62, 0x5d, 0x54, 0x4f, 0x46, +}; + +static uint8_t oaes_gf_mul_b[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x00, 0x0b, 0x16, 0x1d, 0x2c, 0x27, 0x3a, 0x31, 0x58, 0x53, 0x4e, 0x45, 0x74, 0x7f, 0x62, 0x69, + /*1*/ 0xb0, 0xbb, 0xa6, 0xad, 0x9c, 0x97, 0x8a, 0x81, 0xe8, 0xe3, 0xfe, 0xf5, 0xc4, 0xcf, 0xd2, 0xd9, + /*2*/ 0x7b, 0x70, 0x6d, 0x66, 0x57, 0x5c, 0x41, 0x4a, 0x23, 0x28, 0x35, 0x3e, 0x0f, 0x04, 0x19, 0x12, + /*3*/ 0xcb, 0xc0, 0xdd, 0xd6, 0xe7, 0xec, 0xf1, 0xfa, 0x93, 0x98, 0x85, 0x8e, 0xbf, 0xb4, 0xa9, 0xa2, + /*4*/ 0xf6, 0xfd, 0xe0, 0xeb, 0xda, 0xd1, 0xcc, 0xc7, 0xae, 0xa5, 0xb8, 0xb3, 0x82, 0x89, 0x94, 0x9f, + /*5*/ 0x46, 0x4d, 0x50, 0x5b, 0x6a, 0x61, 0x7c, 0x77, 0x1e, 0x15, 0x08, 0x03, 0x32, 0x39, 0x24, 0x2f, + /*6*/ 0x8d, 0x86, 0x9b, 0x90, 0xa1, 0xaa, 0xb7, 0xbc, 0xd5, 0xde, 0xc3, 0xc8, 0xf9, 0xf2, 0xef, 0xe4, + /*7*/ 0x3d, 0x36, 0x2b, 0x20, 0x11, 0x1a, 0x07, 0x0c, 0x65, 0x6e, 0x73, 0x78, 0x49, 0x42, 0x5f, 0x54, + /*8*/ 0xf7, 0xfc, 0xe1, 0xea, 0xdb, 0xd0, 0xcd, 0xc6, 0xaf, 0xa4, 0xb9, 0xb2, 0x83, 0x88, 0x95, 0x9e, + /*9*/ 0x47, 0x4c, 0x51, 0x5a, 0x6b, 0x60, 0x7d, 0x76, 0x1f, 0x14, 0x09, 0x02, 0x33, 0x38, 0x25, 0x2e, + /*a*/ 0x8c, 0x87, 0x9a, 0x91, 0xa0, 0xab, 0xb6, 0xbd, 0xd4, 0xdf, 0xc2, 0xc9, 0xf8, 0xf3, 0xee, 0xe5, + /*b*/ 0x3c, 0x37, 0x2a, 0x21, 0x10, 0x1b, 0x06, 0x0d, 0x64, 0x6f, 0x72, 0x79, 0x48, 0x43, 0x5e, 0x55, + /*c*/ 0x01, 0x0a, 0x17, 0x1c, 0x2d, 0x26, 0x3b, 0x30, 0x59, 0x52, 0x4f, 0x44, 0x75, 0x7e, 0x63, 0x68, + /*d*/ 0xb1, 0xba, 0xa7, 0xac, 0x9d, 0x96, 0x8b, 0x80, 0xe9, 0xe2, 0xff, 0xf4, 0xc5, 0xce, 0xd3, 0xd8, + /*e*/ 0x7a, 0x71, 0x6c, 0x67, 0x56, 0x5d, 0x40, 0x4b, 0x22, 0x29, 0x34, 0x3f, 0x0e, 0x05, 0x18, 0x13, + /*f*/ 0xca, 0xc1, 0xdc, 0xd7, 0xe6, 0xed, 0xf0, 0xfb, 0x92, 0x99, 0x84, 0x8f, 0xbe, 0xb5, 0xa8, 0xa3, +}; + +static uint8_t oaes_gf_mul_d[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x00, 0x0d, 0x1a, 0x17, 0x34, 0x39, 0x2e, 0x23, 0x68, 0x65, 0x72, 0x7f, 0x5c, 0x51, 0x46, 0x4b, + /*1*/ 0xd0, 0xdd, 0xca, 0xc7, 0xe4, 0xe9, 0xfe, 0xf3, 0xb8, 0xb5, 0xa2, 0xaf, 0x8c, 0x81, 0x96, 0x9b, + /*2*/ 0xbb, 0xb6, 0xa1, 0xac, 0x8f, 0x82, 0x95, 0x98, 0xd3, 0xde, 0xc9, 0xc4, 0xe7, 0xea, 0xfd, 0xf0, + /*3*/ 0x6b, 0x66, 0x71, 0x7c, 0x5f, 0x52, 0x45, 0x48, 0x03, 0x0e, 0x19, 0x14, 0x37, 0x3a, 0x2d, 0x20, + /*4*/ 0x6d, 0x60, 0x77, 0x7a, 0x59, 0x54, 0x43, 0x4e, 0x05, 0x08, 0x1f, 0x12, 0x31, 0x3c, 0x2b, 0x26, + /*5*/ 0xbd, 0xb0, 0xa7, 0xaa, 0x89, 0x84, 0x93, 0x9e, 0xd5, 0xd8, 0xcf, 0xc2, 0xe1, 0xec, 0xfb, 0xf6, + /*6*/ 0xd6, 0xdb, 0xcc, 0xc1, 0xe2, 0xef, 0xf8, 0xf5, 0xbe, 0xb3, 0xa4, 0xa9, 0x8a, 0x87, 0x90, 0x9d, + /*7*/ 0x06, 0x0b, 0x1c, 0x11, 0x32, 0x3f, 0x28, 0x25, 0x6e, 0x63, 0x74, 0x79, 0x5a, 0x57, 0x40, 0x4d, + /*8*/ 0xda, 0xd7, 0xc0, 0xcd, 0xee, 0xe3, 0xf4, 0xf9, 0xb2, 0xbf, 0xa8, 0xa5, 0x86, 0x8b, 0x9c, 0x91, + /*9*/ 0x0a, 0x07, 0x10, 0x1d, 0x3e, 0x33, 0x24, 0x29, 0x62, 0x6f, 0x78, 0x75, 0x56, 0x5b, 0x4c, 0x41, + /*a*/ 0x61, 0x6c, 0x7b, 0x76, 0x55, 0x58, 0x4f, 0x42, 0x09, 0x04, 0x13, 0x1e, 0x3d, 0x30, 0x27, 0x2a, + /*b*/ 0xb1, 0xbc, 0xab, 0xa6, 0x85, 0x88, 0x9f, 0x92, 0xd9, 0xd4, 0xc3, 0xce, 0xed, 0xe0, 0xf7, 0xfa, + /*c*/ 0xb7, 0xba, 0xad, 0xa0, 0x83, 0x8e, 0x99, 0x94, 0xdf, 0xd2, 0xc5, 0xc8, 0xeb, 0xe6, 0xf1, 0xfc, + /*d*/ 0x67, 0x6a, 0x7d, 0x70, 0x53, 0x5e, 0x49, 0x44, 0x0f, 0x02, 0x15, 0x18, 0x3b, 0x36, 0x21, 0x2c, + /*e*/ 0x0c, 0x01, 0x16, 0x1b, 0x38, 0x35, 0x22, 0x2f, 0x64, 0x69, 0x7e, 0x73, 0x50, 0x5d, 0x4a, 0x47, + /*f*/ 0xdc, 0xd1, 0xc6, 0xcb, 0xe8, 0xe5, 0xf2, 0xff, 0xb4, 0xb9, 0xae, 0xa3, 0x80, 0x8d, 0x9a, 0x97, +}; + +static uint8_t oaes_gf_mul_e[16][16] = { + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, + /*0*/ 0x00, 0x0e, 0x1c, 0x12, 0x38, 0x36, 0x24, 0x2a, 0x70, 0x7e, 0x6c, 0x62, 0x48, 0x46, 0x54, 0x5a, + /*1*/ 0xe0, 0xee, 0xfc, 0xf2, 0xd8, 0xd6, 0xc4, 0xca, 0x90, 0x9e, 0x8c, 0x82, 0xa8, 0xa6, 0xb4, 0xba, + /*2*/ 0xdb, 0xd5, 0xc7, 0xc9, 0xe3, 0xed, 0xff, 0xf1, 0xab, 0xa5, 0xb7, 0xb9, 0x93, 0x9d, 0x8f, 0x81, + /*3*/ 0x3b, 0x35, 0x27, 0x29, 0x03, 0x0d, 0x1f, 0x11, 0x4b, 0x45, 0x57, 0x59, 0x73, 0x7d, 0x6f, 0x61, + /*4*/ 0xad, 0xa3, 0xb1, 0xbf, 0x95, 0x9b, 0x89, 0x87, 0xdd, 0xd3, 0xc1, 0xcf, 0xe5, 0xeb, 0xf9, 0xf7, + /*5*/ 0x4d, 0x43, 0x51, 0x5f, 0x75, 0x7b, 0x69, 0x67, 0x3d, 0x33, 0x21, 0x2f, 0x05, 0x0b, 0x19, 0x17, + /*6*/ 0x76, 0x78, 0x6a, 0x64, 0x4e, 0x40, 0x52, 0x5c, 0x06, 0x08, 0x1a, 0x14, 0x3e, 0x30, 0x22, 0x2c, + /*7*/ 0x96, 0x98, 0x8a, 0x84, 0xae, 0xa0, 0xb2, 0xbc, 0xe6, 0xe8, 0xfa, 0xf4, 0xde, 0xd0, 0xc2, 0xcc, + /*8*/ 0x41, 0x4f, 0x5d, 0x53, 0x79, 0x77, 0x65, 0x6b, 0x31, 0x3f, 0x2d, 0x23, 0x09, 0x07, 0x15, 0x1b, + /*9*/ 0xa1, 0xaf, 0xbd, 0xb3, 0x99, 0x97, 0x85, 0x8b, 0xd1, 0xdf, 0xcd, 0xc3, 0xe9, 0xe7, 0xf5, 0xfb, + /*a*/ 0x9a, 0x94, 0x86, 0x88, 0xa2, 0xac, 0xbe, 0xb0, 0xea, 0xe4, 0xf6, 0xf8, 0xd2, 0xdc, 0xce, 0xc0, + /*b*/ 0x7a, 0x74, 0x66, 0x68, 0x42, 0x4c, 0x5e, 0x50, 0x0a, 0x04, 0x16, 0x18, 0x32, 0x3c, 0x2e, 0x20, + /*c*/ 0xec, 0xe2, 0xf0, 0xfe, 0xd4, 0xda, 0xc8, 0xc6, 0x9c, 0x92, 0x80, 0x8e, 0xa4, 0xaa, 0xb8, 0xb6, + /*d*/ 0x0c, 0x02, 0x10, 0x1e, 0x34, 0x3a, 0x28, 0x26, 0x7c, 0x72, 0x60, 0x6e, 0x44, 0x4a, 0x58, 0x56, + /*e*/ 0x37, 0x39, 0x2b, 0x25, 0x0f, 0x01, 0x13, 0x1d, 0x47, 0x49, 0x5b, 0x55, 0x7f, 0x71, 0x63, 0x6d, + /*f*/ 0xd7, 0xd9, 0xcb, 0xc5, 0xef, 0xe1, 0xf3, 0xfd, 0xa7, 0xa9, 0xbb, 0xb5, 0x9f, 0x91, 0x83, 0x8d, +}; + +static OAES_RET oaes_sub_byte( uint8_t * byte ) +{ + size_t _x, _y; + + if( NULL == byte ) + return OAES_RET_ARG1; + + _x = _y = *byte; + _x &= 0x0f; + _y &= 0xf0; + _y >>= 4; + *byte = oaes_sub_byte_value[_y][_x]; + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_inv_sub_byte( uint8_t * byte ) +{ + size_t _x, _y; + + if( NULL == byte ) + return OAES_RET_ARG1; + + _x = _y = *byte; + _x &= 0x0f; + _y &= 0xf0; + _y >>= 4; + *byte = oaes_inv_sub_byte_value[_y][_x]; + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_word_rot_right( uint8_t word[OAES_COL_LEN] ) +{ + uint8_t _temp[OAES_COL_LEN]; + + if( NULL == word ) + return OAES_RET_ARG1; + + memcpy( _temp + 1, word, OAES_COL_LEN - 1 ); + _temp[0] = word[OAES_COL_LEN - 1]; + memcpy( word, _temp, OAES_COL_LEN ); + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_word_rot_left( uint8_t word[OAES_COL_LEN] ) +{ + uint8_t _temp[OAES_COL_LEN]; + + if( NULL == word ) + return OAES_RET_ARG1; + + memcpy( _temp, word + 1, OAES_COL_LEN - 1 ); + _temp[OAES_COL_LEN - 1] = word[0]; + memcpy( word, _temp, OAES_COL_LEN ); + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_shift_rows( uint8_t block[OAES_BLOCK_SIZE] ) +{ + uint8_t _temp[OAES_BLOCK_SIZE]; + + if( NULL == block ) + return OAES_RET_ARG1; + + _temp[0x00] = block[0x00]; + _temp[0x01] = block[0x05]; + _temp[0x02] = block[0x0a]; + _temp[0x03] = block[0x0f]; + _temp[0x04] = block[0x04]; + _temp[0x05] = block[0x09]; + _temp[0x06] = block[0x0e]; + _temp[0x07] = block[0x03]; + _temp[0x08] = block[0x08]; + _temp[0x09] = block[0x0d]; + _temp[0x0a] = block[0x02]; + _temp[0x0b] = block[0x07]; + _temp[0x0c] = block[0x0c]; + _temp[0x0d] = block[0x01]; + _temp[0x0e] = block[0x06]; + _temp[0x0f] = block[0x0b]; + memcpy( block, _temp, OAES_BLOCK_SIZE ); + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_inv_shift_rows( uint8_t block[OAES_BLOCK_SIZE] ) +{ + uint8_t _temp[OAES_BLOCK_SIZE]; + + if( NULL == block ) + return OAES_RET_ARG1; + + _temp[0x00] = block[0x00]; + _temp[0x01] = block[0x0d]; + _temp[0x02] = block[0x0a]; + _temp[0x03] = block[0x07]; + _temp[0x04] = block[0x04]; + _temp[0x05] = block[0x01]; + _temp[0x06] = block[0x0e]; + _temp[0x07] = block[0x0b]; + _temp[0x08] = block[0x08]; + _temp[0x09] = block[0x05]; + _temp[0x0a] = block[0x02]; + _temp[0x0b] = block[0x0f]; + _temp[0x0c] = block[0x0c]; + _temp[0x0d] = block[0x09]; + _temp[0x0e] = block[0x06]; + _temp[0x0f] = block[0x03]; + memcpy( block, _temp, OAES_BLOCK_SIZE ); + + return OAES_RET_SUCCESS; +} + +static uint8_t oaes_gf_mul(uint8_t left, uint8_t right) +{ + size_t _x, _y; + + _x = _y = left; + _x &= 0x0f; + _y &= 0xf0; + _y >>= 4; + + switch( right ) + { + case 0x02: + return oaes_gf_mul_2[_y][_x]; + break; + case 0x03: + return oaes_gf_mul_3[_y][_x]; + break; + case 0x09: + return oaes_gf_mul_9[_y][_x]; + break; + case 0x0b: + return oaes_gf_mul_b[_y][_x]; + break; + case 0x0d: + return oaes_gf_mul_d[_y][_x]; + break; + case 0x0e: + return oaes_gf_mul_e[_y][_x]; + break; + default: + return left; + break; + } +} + +static OAES_RET oaes_mix_cols( uint8_t word[OAES_COL_LEN] ) +{ + uint8_t _temp[OAES_COL_LEN]; + + if( NULL == word ) + return OAES_RET_ARG1; + + _temp[0] = oaes_gf_mul(word[0], 0x02) ^ oaes_gf_mul( word[1], 0x03 ) ^ + word[2] ^ word[3]; + _temp[1] = word[0] ^ oaes_gf_mul( word[1], 0x02 ) ^ + oaes_gf_mul( word[2], 0x03 ) ^ word[3]; + _temp[2] = word[0] ^ word[1] ^ + oaes_gf_mul( word[2], 0x02 ) ^ oaes_gf_mul( word[3], 0x03 ); + _temp[3] = oaes_gf_mul( word[0], 0x03 ) ^ word[1] ^ + word[2] ^ oaes_gf_mul( word[3], 0x02 ); + memcpy( word, _temp, OAES_COL_LEN ); + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_inv_mix_cols( uint8_t word[OAES_COL_LEN] ) +{ + uint8_t _temp[OAES_COL_LEN]; + + if( NULL == word ) + return OAES_RET_ARG1; + + _temp[0] = oaes_gf_mul( word[0], 0x0e ) ^ oaes_gf_mul( word[1], 0x0b ) ^ + oaes_gf_mul( word[2], 0x0d ) ^ oaes_gf_mul( word[3], 0x09 ); + _temp[1] = oaes_gf_mul( word[0], 0x09 ) ^ oaes_gf_mul( word[1], 0x0e ) ^ + oaes_gf_mul( word[2], 0x0b ) ^ oaes_gf_mul( word[3], 0x0d ); + _temp[2] = oaes_gf_mul( word[0], 0x0d ) ^ oaes_gf_mul( word[1], 0x09 ) ^ + oaes_gf_mul( word[2], 0x0e ) ^ oaes_gf_mul( word[3], 0x0b ); + _temp[3] = oaes_gf_mul( word[0], 0x0b ) ^ oaes_gf_mul( word[1], 0x0d ) ^ + oaes_gf_mul( word[2], 0x09 ) ^ oaes_gf_mul( word[3], 0x0e ); + memcpy( word, _temp, OAES_COL_LEN ); + + return OAES_RET_SUCCESS; +} + +OAES_RET oaes_sprintf( + char * buf, size_t * buf_len, const uint8_t * data, size_t data_len ) +{ + size_t _i, _buf_len_in; + char _temp[4]; + + if( NULL == buf_len ) + return OAES_RET_ARG2; + + _buf_len_in = *buf_len; + *buf_len = data_len * 3 + data_len / OAES_BLOCK_SIZE + 1; + + if( NULL == buf ) + return OAES_RET_SUCCESS; + + if( *buf_len > _buf_len_in ) + return OAES_RET_BUF; + + if( NULL == data ) + return OAES_RET_ARG3; + + strcpy( buf, "" ); + + for( _i = 0; _i < data_len; _i++ ) + { + sprintf( _temp, "%02x ", data[_i] ); + strcat( buf, _temp ); + if( _i && 0 == ( _i + 1 ) % OAES_BLOCK_SIZE ) + strcat( buf, "\n" ); + } + + return OAES_RET_SUCCESS; +} + +#ifdef OAES_HAVE_ISAAC +static void oaes_get_seed( char buf[RANDSIZ + 1] ) +{ + struct timeb timer; + struct tm *gmTimer; + char * _test = NULL; + + ftime (&timer); + gmTimer = gmtime( &timer.time ); + _test = (char *) calloc( sizeof( char ), timer.millitm ); + sprintf( buf, "%04d%02d%02d%02d%02d%02d%03d%p%d", + gmTimer->tm_year + 1900, gmTimer->tm_mon + 1, gmTimer->tm_mday, + gmTimer->tm_hour, gmTimer->tm_min, gmTimer->tm_sec, timer.millitm, + _test + timer.millitm, getpid() ); + + if( _test ) + free( _test ); +} +#else +static uint32_t oaes_get_seed() +{ + struct timeb timer; + struct tm *gmTimer; + char * _test = NULL; + uint32_t _ret = 0; + + ftime (&timer); + gmTimer = gmtime( &timer.time ); + _test = (char *) calloc( sizeof( char ), timer.millitm ); + _ret = gmTimer->tm_year + 1900 + gmTimer->tm_mon + 1 + gmTimer->tm_mday + + gmTimer->tm_hour + gmTimer->tm_min + gmTimer->tm_sec + timer.millitm + + (uint32_t) ( _test + timer.millitm ) + getpid(); + + if( _test ) + free( _test ); + + return _ret; +} +#endif // OAES_HAVE_ISAAC + +static OAES_RET oaes_key_destroy( oaes_key ** key ) +{ + if( NULL == *key ) + return OAES_RET_SUCCESS; + + if( (*key)->data ) + { + free( (*key)->data ); + (*key)->data = NULL; + } + + if( (*key)->exp_data ) + { + free( (*key)->exp_data ); + (*key)->exp_data = NULL; + } + + (*key)->data_len = 0; + (*key)->exp_data_len = 0; + (*key)->num_keys = 0; + (*key)->key_base = 0; + free( *key ); + *key = NULL; + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_key_expand( OAES_CTX * ctx ) +{ + size_t _i, _j; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == _ctx->key ) + return OAES_RET_NOKEY; + + _ctx->key->key_base = _ctx->key->data_len / OAES_RKEY_LEN; + _ctx->key->num_keys = _ctx->key->key_base + OAES_ROUND_BASE; + + _ctx->key->exp_data_len = _ctx->key->num_keys * OAES_RKEY_LEN * OAES_COL_LEN; + _ctx->key->exp_data = (uint8_t *) + calloc( _ctx->key->exp_data_len, sizeof( uint8_t )); + + if( NULL == _ctx->key->exp_data ) + return OAES_RET_MEM; + + // the first _ctx->key->data_len are a direct copy + memcpy( _ctx->key->exp_data, _ctx->key->data, _ctx->key->data_len ); + + // apply ExpandKey algorithm for remainder + for( _i = _ctx->key->key_base; _i < _ctx->key->num_keys * OAES_RKEY_LEN; _i++ ) + { + uint8_t _temp[OAES_COL_LEN]; + + memcpy( _temp, + _ctx->key->exp_data + ( _i - 1 ) * OAES_RKEY_LEN, OAES_COL_LEN ); + + // transform key column + if( 0 == _i % _ctx->key->key_base ) + { + oaes_word_rot_left( _temp ); + + for( _j = 0; _j < OAES_COL_LEN; _j++ ) + oaes_sub_byte( _temp + _j ); + + _temp[0] = _temp[0] ^ oaes_gf_8[ _i / _ctx->key->key_base - 1 ]; + } + else if( _ctx->key->key_base > 6 && 4 == _i % _ctx->key->key_base ) + { + for( _j = 0; _j < OAES_COL_LEN; _j++ ) + oaes_sub_byte( _temp + _j ); + } + + for( _j = 0; _j < OAES_COL_LEN; _j++ ) + { + _ctx->key->exp_data[ _i * OAES_RKEY_LEN + _j ] = + _ctx->key->exp_data[ ( _i - _ctx->key->key_base ) * + OAES_RKEY_LEN + _j ] ^ _temp[_j]; + } + } + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_key_gen( OAES_CTX * ctx, size_t key_size ) +{ + size_t _i; + oaes_key * _key = NULL; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + OAES_RET _rc = OAES_RET_SUCCESS; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + _key = (oaes_key *) calloc( sizeof( oaes_key ), 1 ); + + if( NULL == _key ) + return OAES_RET_MEM; + + if( _ctx->key ) + oaes_key_destroy( &(_ctx->key) ); + + _key->data_len = key_size; + _key->data = (uint8_t *) calloc( key_size, sizeof( uint8_t )); + + if( NULL == _key->data ) + return OAES_RET_MEM; + + for( _i = 0; _i < key_size; _i++ ) +#ifdef OAES_HAVE_ISAAC + _key->data[_i] = (uint8_t) rand( _ctx->rctx ); +#else + _key->data[_i] = (uint8_t) rand(); +#endif // OAES_HAVE_ISAAC + + _ctx->key = _key; + _rc = _rc || oaes_key_expand( ctx ); + + if( _rc != OAES_RET_SUCCESS ) + { + oaes_key_destroy( &(_ctx->key) ); + return _rc; + } + + return OAES_RET_SUCCESS; +} + +OAES_RET oaes_key_gen_128( OAES_CTX * ctx ) +{ + return oaes_key_gen( ctx, 16 ); +} + +OAES_RET oaes_key_gen_192( OAES_CTX * ctx ) +{ + return oaes_key_gen( ctx, 24 ); +} + +OAES_RET oaes_key_gen_256( OAES_CTX * ctx ) +{ + return oaes_key_gen( ctx, 32 ); +} + +OAES_RET oaes_key_export( OAES_CTX * ctx, + uint8_t * data, size_t * data_len ) +{ + size_t _data_len_in; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == _ctx->key ) + return OAES_RET_NOKEY; + + if( NULL == data_len ) + return OAES_RET_ARG3; + + _data_len_in = *data_len; + // data + header + *data_len = _ctx->key->data_len + OAES_BLOCK_SIZE; + + if( NULL == data ) + return OAES_RET_SUCCESS; + + if( _data_len_in < *data_len ) + return OAES_RET_BUF; + + // header + memcpy( data, oaes_header, OAES_BLOCK_SIZE ); + data[5] = 0x01; + data[7] = _ctx->key->data_len; + memcpy( data + OAES_BLOCK_SIZE, _ctx->key->data, _ctx->key->data_len ); + + return OAES_RET_SUCCESS; +} + +OAES_RET oaes_key_export_data( OAES_CTX * ctx, + uint8_t * data, size_t * data_len ) +{ + size_t _data_len_in; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == _ctx->key ) + return OAES_RET_NOKEY; + + if( NULL == data_len ) + return OAES_RET_ARG3; + + _data_len_in = *data_len; + *data_len = _ctx->key->data_len; + + if( NULL == data ) + return OAES_RET_SUCCESS; + + if( _data_len_in < *data_len ) + return OAES_RET_BUF; + + memcpy( data, _ctx->key->data, *data_len ); + + return OAES_RET_SUCCESS; +} + +OAES_RET oaes_key_import( OAES_CTX * ctx, + const uint8_t * data, size_t data_len ) +{ + oaes_ctx * _ctx = (oaes_ctx *) ctx; + OAES_RET _rc = OAES_RET_SUCCESS; + int _key_length; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == data ) + return OAES_RET_ARG2; + + switch( data_len ) + { + case 16 + OAES_BLOCK_SIZE: + case 24 + OAES_BLOCK_SIZE: + case 32 + OAES_BLOCK_SIZE: + break; + default: + return OAES_RET_ARG3; + } + + // header + if( 0 != memcmp( data, oaes_header, 4 ) ) + return OAES_RET_HEADER; + + // header version + switch( data[4] ) + { + case 0x01: + break; + default: + return OAES_RET_HEADER; + } + + // header type + switch( data[5] ) + { + case 0x01: + break; + default: + return OAES_RET_HEADER; + } + + // options + _key_length = data[7]; + switch( _key_length ) + { + case 16: + case 24: + case 32: + break; + default: + return OAES_RET_HEADER; + } + + if( data_len != _key_length + OAES_BLOCK_SIZE ) + return OAES_RET_ARG3; + + if( _ctx->key ) + oaes_key_destroy( &(_ctx->key) ); + + _ctx->key = (oaes_key *) calloc( sizeof( oaes_key ), 1 ); + + if( NULL == _ctx->key ) + return OAES_RET_MEM; + + _ctx->key->data_len = _key_length; + _ctx->key->data = (uint8_t *) + calloc( _key_length, sizeof( uint8_t )); + + if( NULL == _ctx->key->data ) + { + oaes_key_destroy( &(_ctx->key) ); + return OAES_RET_MEM; + } + + memcpy( _ctx->key->data, data + OAES_BLOCK_SIZE, _key_length ); + _rc = _rc || oaes_key_expand( ctx ); + + if( _rc != OAES_RET_SUCCESS ) + { + oaes_key_destroy( &(_ctx->key) ); + return _rc; + } + + return OAES_RET_SUCCESS; +} + +OAES_RET oaes_key_import_data( OAES_CTX * ctx, + const uint8_t * data, size_t data_len ) +{ + oaes_ctx * _ctx = (oaes_ctx *) ctx; + OAES_RET _rc = OAES_RET_SUCCESS; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == data ) + return OAES_RET_ARG2; + + switch( data_len ) + { + case 16: + case 24: + case 32: + break; + default: + return OAES_RET_ARG3; + } + + if( _ctx->key ) + oaes_key_destroy( &(_ctx->key) ); + + _ctx->key = (oaes_key *) calloc( sizeof( oaes_key ), 1 ); + + if( NULL == _ctx->key ) + return OAES_RET_MEM; + + _ctx->key->data_len = data_len; + _ctx->key->data = (uint8_t *) + calloc( data_len, sizeof( uint8_t )); + + if( NULL == _ctx->key->data ) + { + oaes_key_destroy( &(_ctx->key) ); + return OAES_RET_MEM; + } + + memcpy( _ctx->key->data, data, data_len ); + _rc = _rc || oaes_key_expand( ctx ); + + if( _rc != OAES_RET_SUCCESS ) + { + oaes_key_destroy( &(_ctx->key) ); + return _rc; + } + + return OAES_RET_SUCCESS; +} + +OAES_CTX * oaes_alloc() +{ + oaes_ctx * _ctx = (oaes_ctx *) calloc( sizeof( oaes_ctx ), 1 ); + + if( NULL == _ctx ) + return NULL; + +#ifdef OAES_HAVE_ISAAC + { + ub4 _i = 0; + char _seed[RANDSIZ + 1]; + + _ctx->rctx = (randctx *) calloc( sizeof( randctx ), 1 ); + + if( NULL == _ctx->rctx ) + { + free( _ctx ); + return NULL; + } + + oaes_get_seed( _seed ); + memset( _ctx->rctx->randrsl, 0, RANDSIZ ); + memcpy( _ctx->rctx->randrsl, _seed, RANDSIZ ); + randinit( _ctx->rctx, TRUE); + } +#else + srand( oaes_get_seed() ); +#endif // OAES_HAVE_ISAAC + + _ctx->key = NULL; + oaes_set_option( _ctx, OAES_OPTION_CBC, NULL ); + +#ifdef OAES_DEBUG + _ctx->step_cb = NULL; + oaes_set_option( _ctx, OAES_OPTION_STEP_OFF, NULL ); +#endif // OAES_DEBUG + + return (OAES_CTX *) _ctx; +} + +OAES_RET oaes_free( OAES_CTX ** ctx ) +{ + oaes_ctx ** _ctx = (oaes_ctx **) ctx; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == *_ctx ) + return OAES_RET_SUCCESS; + + if( (*_ctx)->key ) + oaes_key_destroy( &((*_ctx)->key) ); + +#ifdef OAES_HAVE_ISAAC + if( (*_ctx)->rctx ) + { + free( (*_ctx)->rctx ); + (*_ctx)->rctx = NULL; + } +#endif // OAES_HAVE_ISAAC + + free( *_ctx ); + *_ctx = NULL; + + return OAES_RET_SUCCESS; +} + +OAES_RET oaes_set_option( OAES_CTX * ctx, + OAES_OPTION option, const void * value ) +{ + size_t _i; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + switch( option ) + { + case OAES_OPTION_ECB: + _ctx->options &= ~OAES_OPTION_CBC; + memset( _ctx->iv, 0, OAES_BLOCK_SIZE ); + break; + + case OAES_OPTION_CBC: + _ctx->options &= ~OAES_OPTION_ECB; + if( value ) + memcpy( _ctx->iv, value, OAES_BLOCK_SIZE ); + else + { + for( _i = 0; _i < OAES_BLOCK_SIZE; _i++ ) +#ifdef OAES_HAVE_ISAAC + _ctx->iv[_i] = (uint8_t) rand( _ctx->rctx ); +#else + _ctx->iv[_i] = (uint8_t) rand(); +#endif // OAES_HAVE_ISAAC + } + break; + +#ifdef OAES_DEBUG + + case OAES_OPTION_STEP_ON: + if( value ) + { + _ctx->options &= ~OAES_OPTION_STEP_OFF; + _ctx->step_cb = value; + } + else + { + _ctx->options &= ~OAES_OPTION_STEP_ON; + _ctx->options |= OAES_OPTION_STEP_OFF; + _ctx->step_cb = NULL; + return OAES_RET_ARG3; + } + break; + + case OAES_OPTION_STEP_OFF: + _ctx->options &= ~OAES_OPTION_STEP_ON; + _ctx->step_cb = NULL; + break; + +#endif // OAES_DEBUG + + default: + return OAES_RET_ARG2; + } + + _ctx->options |= option; + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_encrypt_block( + OAES_CTX * ctx, uint8_t * c, size_t c_len ) +{ + size_t _i, _j; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == c ) + return OAES_RET_ARG2; + + if( c_len != OAES_BLOCK_SIZE ) + return OAES_RET_ARG3; + + if( NULL == _ctx->key ) + return OAES_RET_NOKEY; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "input", 1, NULL ); +#endif // OAES_DEBUG + + // AddRoundKey(State, K0) + for( _i = 0; _i < c_len; _i++ ) + c[_i] = c[_i] ^ _ctx->key->exp_data[_i]; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + { + _ctx->step_cb( _ctx->key->exp_data, "k_sch", 1, NULL ); + _ctx->step_cb( c, "k_add", 1, NULL ); + } +#endif // OAES_DEBUG + + // for round = 1 step 1 to Nr–1 + for( _i = 1; _i < _ctx->key->num_keys - 1; _i++ ) + { + // SubBytes(state) + for( _j = 0; _j < c_len; _j++ ) + oaes_sub_byte( c + _j ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "s_box", _i, NULL ); +#endif // OAES_DEBUG + + // ShiftRows(state) + oaes_shift_rows( c ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "s_row", _i, NULL ); +#endif // OAES_DEBUG + + // MixColumns(state) + oaes_mix_cols( c ); + oaes_mix_cols( c + 4 ); + oaes_mix_cols( c + 8 ); + oaes_mix_cols( c + 12 ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "m_col", _i, NULL ); +#endif // OAES_DEBUG + + // AddRoundKey(state, w[round*Nb, (round+1)*Nb-1]) + for( _j = 0; _j < c_len; _j++ ) + c[_j] = c[_j] ^ + _ctx->key->exp_data[_i * OAES_RKEY_LEN * OAES_COL_LEN + _j]; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + { + _ctx->step_cb( _ctx->key->exp_data + _i * OAES_RKEY_LEN * OAES_COL_LEN, + "k_sch", _i, NULL ); + _ctx->step_cb( c, "k_add", _i, NULL ); + } +#endif // OAES_DEBUG + + } + + // SubBytes(state) + for( _i = 0; _i < c_len; _i++ ) + oaes_sub_byte( c + _i ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "s_box", _ctx->key->num_keys - 1, NULL ); +#endif // OAES_DEBUG + + // ShiftRows(state) + oaes_shift_rows( c ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "s_row", _ctx->key->num_keys - 1, NULL ); +#endif // OAES_DEBUG + + // AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1]) + for( _i = 0; _i < c_len; _i++ ) + c[_i] = c[_i] ^ _ctx->key->exp_data[ + ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN + _i ]; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + { + _ctx->step_cb( _ctx->key->exp_data + + ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN, + "k_sch", _ctx->key->num_keys - 1, NULL ); + _ctx->step_cb( c, "output", _ctx->key->num_keys - 1, NULL ); + } +#endif // OAES_DEBUG + + return OAES_RET_SUCCESS; +} + +static OAES_RET oaes_decrypt_block( + OAES_CTX * ctx, uint8_t * c, size_t c_len ) +{ + size_t _i, _j; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == c ) + return OAES_RET_ARG2; + + if( c_len != OAES_BLOCK_SIZE ) + return OAES_RET_ARG3; + + if( NULL == _ctx->key ) + return OAES_RET_NOKEY; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "iinput", _ctx->key->num_keys - 1, NULL ); +#endif // OAES_DEBUG + + // AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1]) + for( _i = 0; _i < c_len; _i++ ) + c[_i] = c[_i] ^ _ctx->key->exp_data[ + ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN + _i ]; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + { + _ctx->step_cb( _ctx->key->exp_data + + ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN, + "ik_sch", _ctx->key->num_keys - 1, NULL ); + _ctx->step_cb( c, "ik_add", _ctx->key->num_keys - 1, NULL ); + } +#endif // OAES_DEBUG + + for( _i = _ctx->key->num_keys - 2; _i > 0; _i-- ) + { + // InvShiftRows(state) + oaes_inv_shift_rows( c ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "is_row", _i, NULL ); +#endif // OAES_DEBUG + + // InvSubBytes(state) + for( _j = 0; _j < c_len; _j++ ) + oaes_inv_sub_byte( c + _j ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "is_box", _i, NULL ); +#endif // OAES_DEBUG + + // AddRoundKey(state, w[round*Nb, (round+1)*Nb-1]) + for( _j = 0; _j < c_len; _j++ ) + c[_j] = c[_j] ^ + _ctx->key->exp_data[_i * OAES_RKEY_LEN * OAES_COL_LEN + _j]; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + { + _ctx->step_cb( _ctx->key->exp_data + _i * OAES_RKEY_LEN * OAES_COL_LEN, + "ik_sch", _i, NULL ); + _ctx->step_cb( c, "ik_add", _i, NULL ); + } +#endif // OAES_DEBUG + + // InvMixColums(state) + oaes_inv_mix_cols( c ); + oaes_inv_mix_cols( c + 4 ); + oaes_inv_mix_cols( c + 8 ); + oaes_inv_mix_cols( c + 12 ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "im_col", _i, NULL ); +#endif // OAES_DEBUG + + } + + // InvShiftRows(state) + oaes_inv_shift_rows( c ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "is_row", 1, NULL ); +#endif // OAES_DEBUG + + // InvSubBytes(state) + for( _i = 0; _i < c_len; _i++ ) + oaes_inv_sub_byte( c + _i ); + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + _ctx->step_cb( c, "is_box", 1, NULL ); +#endif // OAES_DEBUG + + // AddRoundKey(state, w[0, Nb-1]) + for( _i = 0; _i < c_len; _i++ ) + c[_i] = c[_i] ^ _ctx->key->exp_data[_i]; + +#ifdef OAES_DEBUG + if( _ctx->step_cb ) + { + _ctx->step_cb( _ctx->key->exp_data, "ik_sch", 1, NULL ); + _ctx->step_cb( c, "ioutput", 1, NULL ); + } +#endif // OAES_DEBUG + + return OAES_RET_SUCCESS; +} + +OAES_RET oaes_encrypt( OAES_CTX * ctx, + const uint8_t * m, size_t m_len, uint8_t * c, size_t * c_len ) +{ + size_t _i, _j, _c_len_in, _c_data_len; + size_t _pad_len = m_len % OAES_BLOCK_SIZE == 0 ? + 0 : OAES_BLOCK_SIZE - m_len % OAES_BLOCK_SIZE; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + OAES_RET _rc = OAES_RET_SUCCESS; + uint8_t _flags = _pad_len ? OAES_FLAG_PAD : 0; + + if( NULL == _ctx ) + return OAES_RET_ARG1; + + if( NULL == m ) + return OAES_RET_ARG2; + + if( NULL == c_len ) + return OAES_RET_ARG5; + + _c_len_in = *c_len; + // data + pad + _c_data_len = m_len + _pad_len; + // header + iv + data + pad + *c_len = 2 * OAES_BLOCK_SIZE + m_len + _pad_len; + + if( NULL == c ) + return OAES_RET_SUCCESS; + + if( _c_len_in < *c_len ) + return OAES_RET_BUF; + + if( NULL == _ctx->key ) + return OAES_RET_NOKEY; + + // header + memcpy(c, oaes_header, OAES_BLOCK_SIZE ); + memcpy(c + 6, &_ctx->options, sizeof(_ctx->options)); + memcpy(c + 8, &_flags, sizeof(_flags)); + // iv + memcpy(c + OAES_BLOCK_SIZE, _ctx->iv, OAES_BLOCK_SIZE ); + // data + memcpy(c + 2 * OAES_BLOCK_SIZE, m, m_len ); + + for( _i = 0; _i < _c_data_len; _i += OAES_BLOCK_SIZE ) + { + uint8_t _block[OAES_BLOCK_SIZE]; + size_t _block_size = min( m_len - _i, OAES_BLOCK_SIZE ); + + memcpy( _block, c + 2 * OAES_BLOCK_SIZE + _i, _block_size ); + + // insert pad + for( _j = 0; _j < OAES_BLOCK_SIZE - _block_size; _j++ ) + _block[ _block_size + _j ] = _j + 1; + + // CBC + if( _ctx->options & OAES_OPTION_CBC ) + { + for( _j = 0; _j < OAES_BLOCK_SIZE; _j++ ) + _block[_j] = _block[_j] ^ _ctx->iv[_j]; + } + + _rc = _rc || + oaes_encrypt_block( ctx, _block, OAES_BLOCK_SIZE ); + memcpy( c + 2 * OAES_BLOCK_SIZE + _i, _block, OAES_BLOCK_SIZE ); + + if( _ctx->options & OAES_OPTION_CBC ) + memcpy( _ctx->iv, _block, OAES_BLOCK_SIZE ); + } + + return _rc; +} + +OAES_RET oaes_decrypt( OAES_CTX * ctx, + const uint8_t * c, size_t c_len, uint8_t * m, size_t * m_len ) +{ + size_t _i, _j, _m_len_in; + oaes_ctx * _ctx = (oaes_ctx *) ctx; + OAES_RET _rc = OAES_RET_SUCCESS; + uint8_t _iv[OAES_BLOCK_SIZE]; + uint8_t _flags; + OAES_OPTION _options; + + if( NULL == ctx ) + return OAES_RET_ARG1; + + if( NULL == c ) + return OAES_RET_ARG2; + + if( c_len % OAES_BLOCK_SIZE ) + return OAES_RET_ARG3; + + if( NULL == m_len ) + return OAES_RET_ARG5; + + _m_len_in = *m_len; + *m_len = c_len - 2 * OAES_BLOCK_SIZE; + + if( NULL == m ) + return OAES_RET_SUCCESS; + + if( _m_len_in < *m_len ) + return OAES_RET_BUF; + + if( NULL == _ctx->key ) + return OAES_RET_NOKEY; + + // header + if( 0 != memcmp( c, oaes_header, 4 ) ) + return OAES_RET_HEADER; + + // header version + switch( c[4] ) + { + case 0x01: + break; + default: + return OAES_RET_HEADER; + } + + // header type + switch( c[5] ) + { + case 0x02: + break; + default: + return OAES_RET_HEADER; + } + + // options + memcpy(&_options, c + 6, sizeof(_options)); + // validate that all options are valid + if( _options & ~( + OAES_OPTION_ECB + | OAES_OPTION_CBC +#ifdef OAES_DEBUG + | OAES_OPTION_STEP_ON + | OAES_OPTION_STEP_OFF +#endif // OAES_DEBUG + ) ) + return OAES_RET_HEADER; + if( ( _options & OAES_OPTION_ECB ) && + ( _options & OAES_OPTION_CBC ) ) + return OAES_RET_HEADER; + if( _options == OAES_OPTION_NONE ) + return OAES_RET_HEADER; + + // flags + memcpy(&_flags, c + 8, sizeof(_flags)); + // validate that all flags are valid + if( _flags & ~( + OAES_FLAG_PAD + ) ) + return OAES_RET_HEADER; + + // iv + memcpy( _iv, c + OAES_BLOCK_SIZE, OAES_BLOCK_SIZE); + // data + pad + memcpy( m, c + 2 * OAES_BLOCK_SIZE, *m_len ); + + for( _i = 0; _i < *m_len; _i += OAES_BLOCK_SIZE ) + { + if( ( _options & OAES_OPTION_CBC ) && _i > 0 ) + memcpy( _iv, c + OAES_BLOCK_SIZE + _i, OAES_BLOCK_SIZE ); + + _rc = _rc || + oaes_decrypt_block( ctx, m + _i, min( *m_len - _i, OAES_BLOCK_SIZE ) ); + + // CBC + if( _options & OAES_OPTION_CBC ) + { + for( _j = 0; _j < OAES_BLOCK_SIZE; _j++ ) + m[ _i + _j ] = m[ _i + _j ] ^ _iv[_j]; + } + } + + // remove pad + if( _flags & OAES_FLAG_PAD ) + { + int _is_pad = 1; + size_t _temp = (size_t) m[*m_len - 1]; + + if( _temp <= 0x00 || _temp > 0x0f ) + return OAES_RET_HEADER; + for( _i = 0; _i < _temp; _i++ ) + if( m[*m_len - 1 - _i] != _temp - _i ) + _is_pad = 0; + if( _is_pad ) + { + memset( m + *m_len - _temp, 0, _temp ); + *m_len -= _temp; + } + else + return OAES_RET_HEADER; + } + + return OAES_RET_SUCCESS; +} diff --git a/openaes/test/test_encrypt.c b/openaes/test/test_encrypt.c new file mode 100644 index 000000000..b229f2d38 --- /dev/null +++ b/openaes/test/test_encrypt.c @@ -0,0 +1,229 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "oaes_lib.h" + +void usage(const char * exe_name) +{ + if( NULL == exe_name ) + return; + + printf( + "Usage:\n" + "\t%s [-ecb] [-key < 128 | 192 | 256 >] <text>\n", + exe_name + ); +} + +int main(int argc, char** argv) +{ + size_t _i; + OAES_CTX * ctx = NULL; + uint8_t *_encbuf, *_decbuf; + size_t _encbuf_len, _decbuf_len, _buf_len; + char *_buf; + short _is_ecb = 0; + char * _text = NULL; + int _key_len = 128; + + if( argc < 2 ) + { + usage( argv[0] ); + return EXIT_FAILURE; + } + + for( _i = 1; _i < argc; _i++ ) + { + int _found = 0; + + if( 0 == strcmp( argv[_i], "-ecb" ) ) + { + _found = 1; + _is_ecb = 1; + } + + if( 0 == strcmp( argv[_i], "-key" ) ) + { + _found = 1; + _i++; // len + if( _i >= argc ) + { + printf("Error: No value specified for '-%s'.\n", + "key"); + usage( argv[0] ); + return EXIT_FAILURE; + } + _key_len = atoi( argv[_i] ); + switch( _key_len ) + { + case 128: + case 192: + case 256: + break; + default: + printf("Error: Invalid value [%d] specified for '-%s'.\n", + _key_len, "key"); + usage( argv[0] ); + return EXIT_FAILURE; + } + } + + if( 0 == _found ) + { + if( _text ) + { + printf("Error: Invalid option '%s'.\n", argv[_i]); + usage( argv[0] ); + return EXIT_FAILURE; + } + else + { + _text = (char *) calloc(strlen( argv[_i] ) + 1, sizeof(char)); + if( NULL == _text ) + { + printf("Error: Failed to allocate memory.\n", argv[_i]); + return EXIT_FAILURE; + } + strcpy( _text, argv[_i] ); + } + } + } + + if( NULL == _text ) + { + usage( argv[0] ); + return EXIT_FAILURE; + } + + oaes_sprintf( NULL, &_buf_len, + (const uint8_t *)_text, strlen( _text ) ); + _buf = (char *) calloc(_buf_len, sizeof(char)); + printf( "\n***** plaintext *****\n" ); + if( _buf ) + { + oaes_sprintf( _buf, &_buf_len, + (const uint8_t *)_text, strlen( _text ) ); + printf( "%s", _buf ); + } + printf( "\n**********************\n" ); + free( _buf ); + + ctx = oaes_alloc(); + if( NULL == ctx ) + { + printf("Error: Failed to initialize OAES.\n"); + free( _text ); + return EXIT_FAILURE; + } + if( _is_ecb ) + if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) ) + printf("Error: Failed to set OAES options.\n"); + switch( _key_len ) + { + case 128: + if( OAES_RET_SUCCESS != oaes_key_gen_128(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + case 192: + if( OAES_RET_SUCCESS != oaes_key_gen_192(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + case 256: + if( OAES_RET_SUCCESS != oaes_key_gen_256(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + default: + break; + } + + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + (const uint8_t *)_text, strlen( _text ), NULL, &_encbuf_len ) ) + printf("Error: Failed to retrieve required buffer size for encryption.\n"); + _encbuf = (uint8_t *) calloc( _encbuf_len, sizeof(uint8_t) ); + if( NULL == _encbuf ) + { + printf( "Error: Failed to allocate memory.\n" ); + free( _text ); + return EXIT_FAILURE; + } + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + (const uint8_t *)_text, strlen( _text ), _encbuf, &_encbuf_len ) ) + printf("Error: Encryption failed.\n"); + + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _encbuf, _encbuf_len, NULL, &_decbuf_len ) ) + printf("Error: Failed to retrieve required buffer size for encryption.\n"); + _decbuf = (uint8_t *) calloc( _decbuf_len, sizeof(uint8_t) ); + if( NULL == _decbuf ) + { + printf( "Error: Failed to allocate memory.\n" ); + free( _text ); + free( _encbuf ); + return EXIT_FAILURE; + } + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _encbuf, _encbuf_len, _decbuf, &_decbuf_len ) ) + printf("Error: Decryption failed.\n"); + + if( OAES_RET_SUCCESS != oaes_free( &ctx ) ) + printf("Error: Failed to uninitialize OAES.\n"); + + oaes_sprintf( NULL, &_buf_len, _encbuf, _encbuf_len ); + _buf = (char *) calloc(_buf_len, sizeof(char)); + printf( "\n***** cyphertext *****\n" ); + if( _buf ) + { + oaes_sprintf( _buf, &_buf_len, _encbuf, _encbuf_len ); + printf( "%s", _buf ); + } + printf( "\n**********************\n" ); + free( _buf ); + + oaes_sprintf( NULL, &_buf_len, _decbuf, _decbuf_len ); + _buf = (char *) calloc(_buf_len, sizeof( char)); + printf( "\n***** plaintext *****\n" ); + if( _buf ) + { + oaes_sprintf( _buf, &_buf_len, _decbuf, _decbuf_len ); + printf( "%s", _buf ); + } + printf( "\n**********************\n\n" ); + free( _buf ); + + free( _encbuf ); + free( _decbuf ); + free( _text ); + + return (EXIT_SUCCESS); +} diff --git a/openaes/test/test_keys.c b/openaes/test/test_keys.c new file mode 100644 index 000000000..6a8d6256d --- /dev/null +++ b/openaes/test/test_keys.c @@ -0,0 +1,248 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#include <stdio.h> +#include <stdlib.h> + +#include "oaes_lib.h" + +/* + * + */ +int main(int argc, char** argv) { + + OAES_CTX * ctx = NULL; + uint8_t * _buf; + size_t _data_len; + FILE * f = NULL; + OAES_RET _rc; + + if( NULL == ( ctx = oaes_alloc() ) ) + { + printf( "Error: Initialization failed.\n" ); + return 1; + } + + /* ************** Generate 128-bit key and export it ************** + * ****************************************************************/ + if( OAES_RET_SUCCESS != ( _rc = oaes_key_gen_128(ctx) ) ) + { + printf( "Error: Failed to generate 128-bit key [%d].\n", _rc ); + oaes_free(&ctx); + return 1; + } + + if( OAES_RET_SUCCESS != ( _rc = oaes_key_export(ctx, NULL, &_data_len) ) ) + { + printf( "Error: Failed to retrieve key length [%d].\n", _rc ); + oaes_free(&ctx); + return 1; + } + + _buf = (uint8_t *) calloc(_data_len, sizeof(uint8_t)); + if( _buf ) + { + if( OAES_RET_SUCCESS != ( _rc = oaes_key_export(ctx, _buf, &_data_len) ) ) + { + printf("Error: Failed to export key [%d].\n", _rc); + free(_buf); + oaes_free(&ctx); + return 1; + } + + f = fopen( "key_128", "wb" ); + if( f ) + { + fwrite(_buf, _data_len, sizeof(uint8_t), f); + fclose(f); + } + free(_buf); + } + + /* ************** Generate 192-bit key and export it ************** + * ****************************************************************/ + if( OAES_RET_SUCCESS != ( _rc = oaes_key_gen_192(ctx) ) ) + { + printf( "Error: Failed to generate 192-bit key [%d].\n", _rc ); + oaes_free(&ctx); + return 1; + } + + if( OAES_RET_SUCCESS != ( _rc = oaes_key_export(ctx, NULL, &_data_len) ) ) + { + printf( "Error: Failed to retrieve key length [%d].\n", _rc ); + oaes_free(&ctx); + return 1; + } + + _buf = (uint8_t *) calloc(_data_len, sizeof(uint8_t)); + if( _buf ) + { + if( OAES_RET_SUCCESS != ( _rc = oaes_key_export(ctx, _buf, &_data_len) ) ) + { + printf("Error: Failed to export key [%d].\n", _rc); + free(_buf); + oaes_free(&ctx); + return 1; + } + + f = fopen("key_192", "wb"); + if( f ) + { + fwrite(_buf, _data_len, sizeof(uint8_t), f); + fclose(f); + } + free(_buf); + } + + /* ************** Generate 256-bit key and export it ************** + * ****************************************************************/ + if( OAES_RET_SUCCESS != ( _rc = oaes_key_gen_256(ctx) ) ) + { + printf("Error: Failed to generate 256-bit key [%d].\n", _rc); + oaes_free(&ctx); + return 1; + } + + if( OAES_RET_SUCCESS != ( _rc = oaes_key_export(ctx, NULL, &_data_len) ) ) + { + printf("Error: Failed to retrieve key length [%d].\n", _rc); + oaes_free(&ctx); + return 1; + } + + _buf = (uint8_t *) calloc(_data_len, sizeof(uint8_t)); + if( _buf ) + { + if( OAES_RET_SUCCESS != ( _rc = oaes_key_export(ctx, _buf, &_data_len) ) ) + { + printf("Error: Failed to export key [%d].\n", _rc); + free(_buf); + oaes_free(&ctx); + return 1; + } + + f = fopen("key_256", "wb"); + if( f ) + { + fwrite(_buf, _data_len, sizeof(uint8_t), f); + fclose(f); + } + free(_buf); + } + + /* ********************** Import 128-bit key ********************** + * ****************************************************************/ + f = fopen("key_128", "rb"); + if( f ) + { + fseek(f, 0L, SEEK_END); + _data_len = ftell(f); + fseek(f, 0L, SEEK_SET); + _buf = (uint8_t *) calloc(_data_len, sizeof(uint8_t)); + if( _buf ) + { + fread(_buf, _data_len, sizeof(uint8_t), f); + + if( OAES_RET_SUCCESS != + ( _rc = oaes_key_import(ctx, _buf, _data_len) ) ) + { + printf( "Error: Failed to import key [%d].\n", _rc ); + free(_buf); + fclose(f); + oaes_free(&ctx); + return 1; + } + + free(_buf); + } + fclose(f); + } + + /* ********************** Import 192-bit key ********************** + * ****************************************************************/ + f = fopen("key_192", "rb"); + if( f ) + { + fseek(f, 0L, SEEK_END); + _data_len = ftell(f); + fseek(f, 0L, SEEK_SET); + _buf = (uint8_t *) calloc(_data_len, sizeof(uint8_t)); + if( _buf ) + { + fread(_buf, _data_len, sizeof(uint8_t), f); + + if( OAES_RET_SUCCESS != + ( _rc = oaes_key_import(ctx, _buf, _data_len) ) ) + { + printf("Error: Failed to import key [%d].\n", _rc); + free(_buf); + fclose(f); + oaes_free(&ctx); + return 1; + } + + free(_buf); + } + fclose(f); + } + + /* ********************** Import 256-bit key ********************** + * ****************************************************************/ + f = fopen("key_256", "rb"); + if( f ) + { + fseek(f, 0L, SEEK_END); + _data_len = ftell(f); + fseek(f, 0L, SEEK_SET); + _buf = (uint8_t *) calloc(_data_len, sizeof(uint8_t)); + if( _buf ) + { + fread(_buf, _data_len, sizeof(uint8_t), f); + + if( OAES_RET_SUCCESS != + ( _rc = oaes_key_import(ctx, _buf, _data_len) ) ) + { + printf("Error: Failed to import key [%d].\n", _rc); + free(_buf); + fclose(f); + oaes_free(&ctx); + return 1; + } + + free(_buf); + } + fclose(f); + } + + oaes_free(&ctx); + + return (EXIT_SUCCESS); +} diff --git a/openaes/test/test_performance.c b/openaes/test/test_performance.c new file mode 100644 index 000000000..a005c58c4 --- /dev/null +++ b/openaes/test/test_performance.c @@ -0,0 +1,200 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +#include "oaes_lib.h" + +void usage(const char * exe_name) +{ + if( NULL == exe_name ) + return; + + printf( + "Usage:\n" + "\t%s [-ecb] [-key < 128 | 192 | 256 >] [-data <data_len>]\n", + exe_name + ); +} + +/* + * + */ +int main(int argc, char** argv) { + + size_t _i, _j; + time_t _time_start, _time_end; + OAES_CTX * ctx = NULL; + uint8_t *_encbuf, *_decbuf; + size_t _encbuf_len, _decbuf_len; + uint8_t _buf[1024 * 1024]; + short _is_ecb = 0; + int _key_len = 128; + size_t _data_len = 64; + + for( _i = 1; _i < argc; _i++ ) + { + int _found = 0; + + if( 0 == strcmp( argv[_i], "-ecb" ) ) + { + _found = 1; + _is_ecb = 1; + } + + if( 0 == strcmp( argv[_i], "-key" ) ) + { + _found = 1; + _i++; // key_len + if( _i >= argc ) + { + printf("Error: No value specified for '-%s'.\n", + "key"); + usage( argv[0] ); + return 1; + } + _key_len = atoi( argv[_i] ); + switch( _key_len ) + { + case 128: + case 192: + case 256: + break; + default: + printf("Error: Invalid value [%d] specified for '-%s'.\n", + _key_len, "key"); + usage( argv[0] ); + return 1; + } + } + + if( 0 == strcmp( argv[_i], "-data" ) ) + { + _found = 1; + _i++; // data_len + if( _i >= argc ) + { + printf("Error: No value specified for '-%s'.\n", + "data"); + usage( argv[0] ); + return 1; + } + _data_len = atoi( argv[_i] ); + } + + if( 0 == _found ) + { + printf("Error: Invalid option '%s'.\n", argv[_i]); + usage( argv[0] ); + return 1; + } + } + + // generate random test data + time( &_time_start ); + srand( _time_start ); + for( _i = 0; _i < 1024 * 1024; _i++ ) + _buf[_i] = rand(); + + ctx = oaes_alloc(); + if( NULL == ctx ) + { + printf("Error: Failed to initialize OAES.\n"); + return EXIT_FAILURE; + } + if( _is_ecb ) + if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) ) + printf("Error: Failed to set OAES options.\n"); + switch( _key_len ) + { + case 128: + if( OAES_RET_SUCCESS != oaes_key_gen_128(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + case 192: + if( OAES_RET_SUCCESS != oaes_key_gen_192(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + case 256: + if( OAES_RET_SUCCESS != oaes_key_gen_256(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + default: + break; + } + + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + (const uint8_t *)_buf, 1024 * 1024, NULL, &_encbuf_len ) ) + printf("Error: Failed to retrieve required buffer size for encryption.\n"); + _encbuf = (uint8_t *) calloc( _encbuf_len, sizeof( char ) ); + if( NULL == _encbuf ) + { + printf( "Error: Failed to allocate memory.\n" ); + return EXIT_FAILURE; + } + + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _encbuf, _encbuf_len, NULL, &_decbuf_len ) ) + printf("Error: Failed to retrieve required buffer size for encryption.\n"); + _decbuf = (uint8_t *) calloc( _decbuf_len, sizeof( char ) ); + if( NULL == _decbuf ) + { + free( _encbuf ); + printf( "Error: Failed to allocate memory.\n" ); + return EXIT_FAILURE; + } + + time( &_time_start ); + + for( _i = 0; _i < _data_len; _i++ ) + { + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + (const uint8_t *)_buf, 1024 * 1024, _encbuf, &_encbuf_len ) ) + printf("Error: Encryption failed.\n"); + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _encbuf, _encbuf_len, _decbuf, &_decbuf_len ) ) + printf("Error: Decryption failed.\n"); + } + + time( &_time_end ); + printf( "Test encrypt and decrypt:\n\ttime: %lld seconds\n\tdata: %ld MB" + "\n\tkey: %d bits\n\tmode: %s\n", + _time_end - _time_start, _data_len, + _key_len, _is_ecb? "EBC" : "CBC" ); + free( _encbuf ); + free( _decbuf ); + if( OAES_RET_SUCCESS != oaes_free( &ctx ) ) + printf("Error: Failed to uninitialize OAES.\n"); + + return (EXIT_SUCCESS); +} diff --git a/openaes/test/vt_aes.c b/openaes/test/vt_aes.c new file mode 100644 index 000000000..1ba755e42 --- /dev/null +++ b/openaes/test/vt_aes.c @@ -0,0 +1,405 @@ +/* + * --------------------------------------------------------------------------- + * OpenAES License + * --------------------------------------------------------------------------- + * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define OAES_DEBUG 1 +#include "oaes_lib.h" + +static int _is_step = 1; + +static int step_cb( + const uint8_t state[OAES_BLOCK_SIZE], + const char * step_name, + int step_count, + void * user_data ) +{ + size_t _buf_len; + char * _buf; + + + if( NULL == state ) + return 1; + + oaes_sprintf( NULL, &_buf_len, state, OAES_BLOCK_SIZE ); + _buf = (char *) calloc( _buf_len, sizeof( char ) ); + + if( _buf ) + { + oaes_sprintf( _buf, &_buf_len, state, OAES_BLOCK_SIZE ); + printf( "round[%2d].%-7s --> %s", step_count, step_name, _buf ); + free( _buf ); + } + + if( 1 == _is_step && '\n' != getchar( ) ) + _is_step = 0; + + return 0; +} + +static int to_binary(uint8_t * buf, size_t * buf_len, const char * data) +{ + size_t _i, _buf_len_in; + + if( NULL == buf_len ) + return 1; + + if( NULL == data ) + return 1; + + _buf_len_in = *buf_len; + *buf_len = strlen( data ) / 2; + + if( NULL == buf ) + return 0; + + if( *buf_len > _buf_len_in ) + return 1; + + memset( buf, 0, strlen( data ) / 2 ); + + // lookup ascii table + for( _i = 0; _i < strlen( data ); _i++ ) + { + // 0-9 + if( data[_i] >= 0x30 && data[_i] <= 0x39 ) + buf[_i / 2] += ( data[_i] - 0x30 ) << ( 4 * ( ( _i + 1 ) % 2 ) ) ; + // a-f + else if( data[_i] >= 0x41 && data[_i] <= 0x46 ) + buf[_i / 2] += ( data[_i] - 0x37 ) << ( 4 * ( ( _i + 1 ) % 2 ) ); + // A-F + else if( data[_i] >= 0x61 && data[_i] <= 0x66 ) + buf[_i / 2] += ( data[_i] - 0x57 ) << ( 4 * ( ( _i + 1 ) % 2 ) ); + // invalid character + else + return 1; + } + + return 0; +} + +static void usage(const char * exe_name) +{ + if( NULL == exe_name ) + return; + + printf( + "Usage:\n" + " %s [-step] [-ecb] [[-key < 128 | 192 | 256 | key_data >] [-bin] <text>\n", + exe_name + ); +} + +int main(int argc, char** argv) +{ + size_t _i; + OAES_CTX * ctx = NULL; + uint8_t *_encbuf, *_decbuf, *_key_data = NULL, *_bin_data = NULL; + size_t _encbuf_len, _decbuf_len, _buf_len; + size_t _key_data_len = 0, _bin_data_len = 0; + char *_buf; + short _is_ecb = 0, _is_bin = 0; + char * _text = NULL, * _key_text = NULL; + int _key_len = 128; + + if( argc < 2 ) + { + usage( argv[0] ); + return EXIT_FAILURE; + } + + for( _i = 1; _i < argc; _i++ ) + { + int _found = 0; + + if( 0 == strcmp( argv[_i], "-nostep" ) ) + { + _found = 1; + _is_step = 0; + } + + if( 0 == strcmp( argv[_i], "-ecb" ) ) + { + _found = 1; + _is_ecb = 1; + } + + if( 0 == strcmp( argv[_i], "-bin" ) ) + { + _found = 1; + _is_bin = 1; + } + + if( 0 == strcmp( argv[_i], "-key" ) ) + { + _found = 1; + _i++; // len + if( _i >= argc ) + { + printf("Error: No value specified for '-%s'.\n", + "key"); + usage( argv[0] ); + return EXIT_FAILURE; + } + _key_len = atoi( argv[_i] ); + switch( _key_len ) + { + case 128: + case 192: + case 256: + break; + default: + _key_text = argv[_i]; + if( to_binary( NULL, &_key_data_len, _key_text ) ) + { + printf( "Error: Invalid value [%s] specified for '-%s'.\n", + argv[_i], "key" ); + return EXIT_FAILURE; + } + switch( _key_data_len ) + { + case 16: + case 24: + case 32: + break; + default: + printf("Error: key_data [%s] specified for '-%s' has an invalid " + "size.\n", argv[_i], "key"); + usage( argv[0] ); + return EXIT_FAILURE; + } + } + } + + if( 0 == _found ) + { + if( _text ) + { + printf("Error: Invalid option '%s'.\n", argv[_i]); + usage( argv[0] ); + return EXIT_FAILURE; + } + else + { + _text = argv[_i]; + if( _is_bin && to_binary( NULL, &_bin_data_len, _text ) ) + { + printf( "Error: Invalid value [%s] specified for '-%s'.\n", + argv[_i], "bin" ); + return EXIT_FAILURE; + } + } + } + } + + if( NULL == _text ) + { + usage( argv[0] ); + return EXIT_FAILURE; + } + + if( _is_step ) + printf( "\nEnabling step mode, press Return to step.\n\n" ); + + if( _is_bin ) + { + _bin_data = (uint8_t *) calloc(_bin_data_len, sizeof(uint8_t)); + if( NULL == _bin_data ) + { + printf( "Error: Failed to allocate memory.\n" ); + return EXIT_FAILURE; + } + if( to_binary( _bin_data, &_bin_data_len, _text ) ) + { + printf( "Error: Could not load data [%s].\n", _text); + free( _bin_data ); + return EXIT_FAILURE; + } + } + else + { + oaes_sprintf( NULL, &_buf_len, (const uint8_t *)_text, strlen(_text)); + _buf = (char *) calloc(_buf_len, sizeof(char)); + printf( "\n***** plaintext *****\n" ); + if( _buf ) + { + oaes_sprintf( _buf, &_buf_len, + (const uint8_t *)_text, strlen( _text ) ); + printf( "%s", _buf ); + } + printf( "\n**********************\n" ); + free( _buf ); + } + + ctx = oaes_alloc(); + if( NULL == ctx ) + { + printf("Error: Failed to initialize OAES.\n"); + if( _bin_data ) + free( _bin_data ); + return EXIT_FAILURE; + } + if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_STEP_ON, step_cb ) ) + printf("Error: Failed to set OAES options.\n"); + if( _is_ecb ) + if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) ) + printf("Error: Failed to set OAES options.\n"); + + if( _key_text ) + { + _key_data = (uint8_t *) calloc(_key_data_len, sizeof(uint8_t)); + if( NULL == _key_data ) + { + printf( "Error: Failed to allocate memory.\n" ); + if( _bin_data ) + free( _bin_data ); + return EXIT_FAILURE; + } + if( to_binary( _key_data, &_key_data_len, _key_text ) ) + { + printf( "Error: Could not load key [%s].\n", _key_text); + free( _key_data ); + return EXIT_FAILURE; + } + oaes_key_import_data( ctx, _key_data, _key_data_len ); + } + else + switch( _key_len ) + { + case 128: + if( OAES_RET_SUCCESS != oaes_key_gen_128(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + case 192: + if( OAES_RET_SUCCESS != oaes_key_gen_192(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + case 256: + if( OAES_RET_SUCCESS != oaes_key_gen_256(ctx) ) + printf("Error: Failed to generate OAES %d bit key.\n", _key_len); + break; + default: + break; + } + + if( _bin_data ) + { + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + _bin_data, _bin_data_len, NULL, &_encbuf_len ) ) + printf("Error: Failed to retrieve required buffer size for encryption.\n"); + _encbuf = (uint8_t *) calloc(_encbuf_len, sizeof(uint8_t)); + if( NULL == _encbuf ) + { + printf( "Error: Failed to allocate memory.\n" ); + if( _key_data ) + free( _key_data ); + free( _bin_data ); + return EXIT_FAILURE; + } + printf( "\n" ); + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + _bin_data, _bin_data_len, _encbuf, &_encbuf_len ) ) + printf("Error: Encryption failed.\n"); + printf( "\n**********************\n\n" ); + } + else + { + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + (const uint8_t *)_text, strlen( _text ), NULL, &_encbuf_len ) ) + printf("Error: Failed to retrieve required buffer size for encryption.\n"); + _encbuf = (uint8_t *) calloc(_encbuf_len, sizeof(uint8_t)); + if( NULL == _encbuf ) + { + printf( "Error: Failed to allocate memory.\n" ); + if( _key_data ) + free( _key_data ); + return EXIT_FAILURE; + } + printf( "\n" ); + if( OAES_RET_SUCCESS != oaes_encrypt( ctx, + (const uint8_t *)_text, strlen( _text ), _encbuf, &_encbuf_len ) ) + printf("Error: Encryption failed.\n"); + printf( "\n**********************\n\n" ); + } + + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _encbuf, _encbuf_len, NULL, &_decbuf_len ) ) + printf("Error: Failed to retrieve required buffer size for encryption.\n"); + _decbuf = (uint8_t *) calloc(_decbuf_len, sizeof(uint8_t)); + if( NULL == _decbuf ) + { + printf( "Error: Failed to allocate memory.\n" ); + if( _key_data ) + free( _key_data ); + if( _bin_data ) + free( _bin_data ); + free( _encbuf ); + return EXIT_FAILURE; + } + if( OAES_RET_SUCCESS != oaes_decrypt( ctx, + _encbuf, _encbuf_len, _decbuf, &_decbuf_len ) ) + printf("Error: Decryption failed.\n"); + + if( OAES_RET_SUCCESS != oaes_free( &ctx ) ) + printf("Error: Failed to uninitialize OAES.\n"); + + oaes_sprintf( NULL, &_buf_len, _encbuf, _encbuf_len ); + _buf = (char *) calloc(_buf_len, sizeof(char)); + printf( "\n***** cyphertext *****\n" ); + if( _buf ) + { + oaes_sprintf( _buf, &_buf_len, _encbuf, _encbuf_len ); + printf( "%s", _buf ); + } + printf( "\n**********************\n" ); + free( _buf ); + + oaes_sprintf( NULL, &_buf_len, _decbuf, _decbuf_len ); + _buf = (char *) calloc(_buf_len, sizeof(char)); + printf( "\n***** plaintext *****\n" ); + if( _buf ) + { + oaes_sprintf( _buf, &_buf_len, _decbuf, _decbuf_len ); + printf( "%s", _buf ); + } + printf( "\n**********************\n\n" ); + free( _buf ); + + free( _encbuf ); + free( _decbuf ); + if( _key_data ) + free( _key_data ); + if( _bin_data ) + free( _bin_data ); + + return (EXIT_SUCCESS); +} |