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authorTycho <work.tycho+git@gmail.com>2014-01-26 15:28:51 +0100
committerTycho <work.tycho+git@gmail.com>2014-01-26 15:28:51 +0100
commitbed2ee22e8283a2e8bd0790a89124839319c2fc3 (patch)
treeee9e66a7b7c63995797a502f209079c1422ce9c9 /lib/cryptopp/square.cpp
parentRefactored cBlockHandler::OnUse and dependents (diff)
parentMerge pull request #589 from mc-server/minecartimprovements (diff)
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Diffstat (limited to 'lib/cryptopp/square.cpp')
-rw-r--r--lib/cryptopp/square.cpp177
1 files changed, 0 insertions, 177 deletions
diff --git a/lib/cryptopp/square.cpp b/lib/cryptopp/square.cpp
deleted file mode 100644
index 00e6bddbe..000000000
--- a/lib/cryptopp/square.cpp
+++ /dev/null
@@ -1,177 +0,0 @@
-// square.cpp - written and placed in the public domain by Wei Dai
-// Based on Paulo S.L.M. Barreto's public domain implementation
-
-#include "pch.h"
-#include "square.h"
-#include "misc.h"
-#include "gf256.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-// apply theta to a roundkey
-static void SquareTransform (word32 in[4], word32 out[4])
-{
- static const byte G[4][4] =
- {
- 0x02U, 0x01U, 0x01U, 0x03U,
- 0x03U, 0x02U, 0x01U, 0x01U,
- 0x01U, 0x03U, 0x02U, 0x01U,
- 0x01U, 0x01U, 0x03U, 0x02U
- };
-
- GF256 gf256(0xf5);
-
- for (int i = 0; i < 4; i++)
- {
- word32 temp = 0;
- for (int j = 0; j < 4; j++)
- for (int k = 0; k < 4; k++)
- temp ^= (word32)gf256.Multiply(GETBYTE(in[i], 3-k), G[k][j]) << ((3-j)*8);
- out[i] = temp;
- }
-}
-
-#define roundkeys(i, j) m_roundkeys[(i)*4+(j)]
-#define roundkeys4(i) (m_roundkeys+(i)*4)
-
-void Square::Base::UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &)
-{
- AssertValidKeyLength(length);
-
- static const word32 offset[ROUNDS] = {
- 0x01000000UL, 0x02000000UL, 0x04000000UL, 0x08000000UL,
- 0x10000000UL, 0x20000000UL, 0x40000000UL, 0x80000000UL,
- };
-
- GetUserKey(BIG_ENDIAN_ORDER, m_roundkeys.data(), KEYLENGTH/4, userKey, KEYLENGTH);
-
- /* apply the key evolution function */
- for (int i = 1; i < ROUNDS+1; i++)
- {
- roundkeys(i, 0) = roundkeys(i-1, 0) ^ rotlFixed(roundkeys(i-1, 3), 8U) ^ offset[i-1];
- roundkeys(i, 1) = roundkeys(i-1, 1) ^ roundkeys(i, 0);
- roundkeys(i, 2) = roundkeys(i-1, 2) ^ roundkeys(i, 1);
- roundkeys(i, 3) = roundkeys(i-1, 3) ^ roundkeys(i, 2);
- }
-
- /* produce the round keys */
- if (IsForwardTransformation())
- {
- for (int i = 0; i < ROUNDS; i++)
- SquareTransform (roundkeys4(i), roundkeys4(i));
- }
- else
- {
- for (int i = 0; i < ROUNDS/2; i++)
- for (int j = 0; j < 4; j++)
- std::swap(roundkeys(i, j), roundkeys(ROUNDS-i, j));
- SquareTransform (roundkeys4(ROUNDS), roundkeys4(ROUNDS));
- }
-}
-
-#define MSB(x) (((x) >> 24) & 0xffU) /* most significant byte */
-#define SSB(x) (((x) >> 16) & 0xffU) /* second in significance */
-#define TSB(x) (((x) >> 8) & 0xffU) /* third in significance */
-#define LSB(x) (((x) ) & 0xffU) /* least significant byte */
-
-#define squareRound(text, temp, T0, T1, T2, T3, roundkey) \
-{ \
- temp[0] = T0[MSB (text[0])] \
- ^ T1[MSB (text[1])] \
- ^ T2[MSB (text[2])] \
- ^ T3[MSB (text[3])] \
- ^ roundkey[0]; \
- temp[1] = T0[SSB (text[0])] \
- ^ T1[SSB (text[1])] \
- ^ T2[SSB (text[2])] \
- ^ T3[SSB (text[3])] \
- ^ roundkey[1]; \
- temp[2] = T0[TSB (text[0])] \
- ^ T1[TSB (text[1])] \
- ^ T2[TSB (text[2])] \
- ^ T3[TSB (text[3])] \
- ^ roundkey[2]; \
- temp[3] = T0[LSB (text[0])] \
- ^ T1[LSB (text[1])] \
- ^ T2[LSB (text[2])] \
- ^ T3[LSB (text[3])] \
- ^ roundkey[3]; \
-} /* squareRound */
-
-#define squareFinal(text, temp, S, roundkey) \
-{ \
- text[0] = ((word32) (S[MSB (temp[0])]) << 24) \
- ^ ((word32) (S[MSB (temp[1])]) << 16) \
- ^ ((word32) (S[MSB (temp[2])]) << 8) \
- ^ (word32) (S[MSB (temp[3])]) \
- ^ roundkey[0]; \
- text[1] = ((word32) (S[SSB (temp[0])]) << 24) \
- ^ ((word32) (S[SSB (temp[1])]) << 16) \
- ^ ((word32) (S[SSB (temp[2])]) << 8) \
- ^ (word32) (S[SSB (temp[3])]) \
- ^ roundkey[1]; \
- text[2] = ((word32) (S[TSB (temp[0])]) << 24) \
- ^ ((word32) (S[TSB (temp[1])]) << 16) \
- ^ ((word32) (S[TSB (temp[2])]) << 8) \
- ^ (word32) (S[TSB (temp[3])]) \
- ^ roundkey[2]; \
- text[3] = ((word32) (S[LSB (temp[0])]) << 24) \
- ^ ((word32) (S[LSB (temp[1])]) << 16) \
- ^ ((word32) (S[LSB (temp[2])]) << 8) \
- ^ (word32) (S[LSB (temp[3])]) \
- ^ roundkey[3]; \
-} /* squareFinal */
-
-typedef BlockGetAndPut<word32, BigEndian> Block;
-
-void Square::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
-{
- word32 text[4], temp[4];
- Block::Get(inBlock)(text[0])(text[1])(text[2])(text[3]);
-
- /* initial key addition */
- text[0] ^= roundkeys(0, 0);
- text[1] ^= roundkeys(0, 1);
- text[2] ^= roundkeys(0, 2);
- text[3] ^= roundkeys(0, 3);
-
- /* ROUNDS - 1 full rounds */
- for (int i=1; i+1<ROUNDS; i+=2)
- {
- squareRound (text, temp, Te[0], Te[1], Te[2], Te[3], roundkeys4(i));
- squareRound (temp, text, Te[0], Te[1], Te[2], Te[3], roundkeys4(i+1));
- }
- squareRound (text, temp, Te[0], Te[1], Te[2], Te[3], roundkeys4(ROUNDS-1));
-
- /* last round (diffusion becomes only transposition) */
- squareFinal (text, temp, Se, roundkeys4(ROUNDS));
-
- Block::Put(xorBlock, outBlock)(text[0])(text[1])(text[2])(text[3]);
-}
-
-void Square::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
-{
- word32 text[4], temp[4];
- Block::Get(inBlock)(text[0])(text[1])(text[2])(text[3]);
-
- /* initial key addition */
- text[0] ^= roundkeys(0, 0);
- text[1] ^= roundkeys(0, 1);
- text[2] ^= roundkeys(0, 2);
- text[3] ^= roundkeys(0, 3);
-
- /* ROUNDS - 1 full rounds */
- for (int i=1; i+1<ROUNDS; i+=2)
- {
- squareRound (text, temp, Td[0], Td[1], Td[2], Td[3], roundkeys4(i));
- squareRound (temp, text, Td[0], Td[1], Td[2], Td[3], roundkeys4(i+1));
- }
- squareRound (text, temp, Td[0], Td[1], Td[2], Td[3], roundkeys4(ROUNDS-1));
-
- /* last round (diffusion becomes only transposition) */
- squareFinal (text, temp, Sd, roundkeys4(ROUNDS));
-
- Block::Put(xorBlock, outBlock)(text[0])(text[1])(text[2])(text[3]);
-}
-
-NAMESPACE_END