From 53e22b11857fed62e2313d6d84d90f88ed412ffb Mon Sep 17 00:00:00 2001 From: Alexander Harkness Date: Mon, 29 Jul 2013 12:13:03 +0100 Subject: Changed everyting to Unix line endings. --- CryptoPP/authenc.cpp | 360 +++++++++++++++++++++++++-------------------------- 1 file changed, 180 insertions(+), 180 deletions(-) (limited to 'CryptoPP/authenc.cpp') diff --git a/CryptoPP/authenc.cpp b/CryptoPP/authenc.cpp index 0ca5da60d..f93662efb 100644 --- a/CryptoPP/authenc.cpp +++ b/CryptoPP/authenc.cpp @@ -1,180 +1,180 @@ -// authenc.cpp - written and placed in the public domain by Wei Dai - -#include "pch.h" - -#ifndef CRYPTOPP_IMPORTS - -#include "authenc.h" - -NAMESPACE_BEGIN(CryptoPP) - -void AuthenticatedSymmetricCipherBase::AuthenticateData(const byte *input, size_t len) -{ - unsigned int blockSize = AuthenticationBlockSize(); - unsigned int &num = m_bufferedDataLength; - byte* data = m_buffer.begin(); - - if (num != 0) // process left over data - { - if (num+len >= blockSize) - { - memcpy(data+num, input, blockSize-num); - AuthenticateBlocks(data, blockSize); - input += (blockSize-num); - len -= (blockSize-num); - num = 0; - // drop through and do the rest - } - else - { - memcpy(data+num, input, len); - num += (unsigned int)len; - return; - } - } - - // now process the input data in blocks of blockSize bytes and save the leftovers to m_data - if (len >= blockSize) - { - size_t leftOver = AuthenticateBlocks(input, len); - input += (len - leftOver); - len = leftOver; - } - - memcpy(data, input, len); - num = (unsigned int)len; -} - -void AuthenticatedSymmetricCipherBase::SetKey(const byte *userKey, size_t keylength, const NameValuePairs ¶ms) -{ - m_bufferedDataLength = 0; - m_state = State_Start; - - SetKeyWithoutResync(userKey, keylength, params); - m_state = State_KeySet; - - size_t length; - const byte *iv = GetIVAndThrowIfInvalid(params, length); - if (iv) - Resynchronize(iv, (int)length); -} - -void AuthenticatedSymmetricCipherBase::Resynchronize(const byte *iv, int length) -{ - if (m_state < State_KeySet) - throw BadState(AlgorithmName(), "Resynchronize", "key is set"); - - m_bufferedDataLength = 0; - m_totalHeaderLength = m_totalMessageLength = m_totalFooterLength = 0; - m_state = State_KeySet; - - Resync(iv, this->ThrowIfInvalidIVLength(length)); - m_state = State_IVSet; -} - -void AuthenticatedSymmetricCipherBase::Update(const byte *input, size_t length) -{ - if (length == 0) - return; - - switch (m_state) - { - case State_Start: - case State_KeySet: - throw BadState(AlgorithmName(), "Update", "setting key and IV"); - case State_IVSet: - AuthenticateData(input, length); - m_totalHeaderLength += length; - break; - case State_AuthUntransformed: - case State_AuthTransformed: - AuthenticateLastConfidentialBlock(); - m_bufferedDataLength = 0; - m_state = State_AuthFooter; - // fall through - case State_AuthFooter: - AuthenticateData(input, length); - m_totalFooterLength += length; - break; - default: - assert(false); - } -} - -void AuthenticatedSymmetricCipherBase::ProcessData(byte *outString, const byte *inString, size_t length) -{ - m_totalMessageLength += length; - if (m_state >= State_IVSet && m_totalMessageLength > MaxMessageLength()) - throw InvalidArgument(AlgorithmName() + ": message length exceeds maximum"); - -reswitch: - switch (m_state) - { - case State_Start: - case State_KeySet: - throw BadState(AlgorithmName(), "ProcessData", "setting key and IV"); - case State_AuthFooter: - throw BadState(AlgorithmName(), "ProcessData was called after footer input has started"); - case State_IVSet: - AuthenticateLastHeaderBlock(); - m_bufferedDataLength = 0; - m_state = AuthenticationIsOnPlaintext()==IsForwardTransformation() ? State_AuthUntransformed : State_AuthTransformed; - goto reswitch; - case State_AuthUntransformed: - AuthenticateData(inString, length); - AccessSymmetricCipher().ProcessData(outString, inString, length); - break; - case State_AuthTransformed: - AccessSymmetricCipher().ProcessData(outString, inString, length); - AuthenticateData(outString, length); - break; - default: - assert(false); - } -} - -void AuthenticatedSymmetricCipherBase::TruncatedFinal(byte *mac, size_t macSize) -{ - if (m_totalHeaderLength > MaxHeaderLength()) - throw InvalidArgument(AlgorithmName() + ": header length of " + IntToString(m_totalHeaderLength) + " exceeds the maximum of " + IntToString(MaxHeaderLength())); - - if (m_totalFooterLength > MaxFooterLength()) - { - if (MaxFooterLength() == 0) - throw InvalidArgument(AlgorithmName() + ": additional authenticated data (AAD) cannot be input after data to be encrypted or decrypted"); - else - throw InvalidArgument(AlgorithmName() + ": footer length of " + IntToString(m_totalFooterLength) + " exceeds the maximum of " + IntToString(MaxFooterLength())); - } - - switch (m_state) - { - case State_Start: - case State_KeySet: - throw BadState(AlgorithmName(), "TruncatedFinal", "setting key and IV"); - - case State_IVSet: - AuthenticateLastHeaderBlock(); - m_bufferedDataLength = 0; - // fall through - - case State_AuthUntransformed: - case State_AuthTransformed: - AuthenticateLastConfidentialBlock(); - m_bufferedDataLength = 0; - // fall through - - case State_AuthFooter: - AuthenticateLastFooterBlock(mac, macSize); - m_bufferedDataLength = 0; - break; - - default: - assert(false); - } - - m_state = State_KeySet; -} - -NAMESPACE_END - -#endif +// authenc.cpp - written and placed in the public domain by Wei Dai + +#include "pch.h" + +#ifndef CRYPTOPP_IMPORTS + +#include "authenc.h" + +NAMESPACE_BEGIN(CryptoPP) + +void AuthenticatedSymmetricCipherBase::AuthenticateData(const byte *input, size_t len) +{ + unsigned int blockSize = AuthenticationBlockSize(); + unsigned int &num = m_bufferedDataLength; + byte* data = m_buffer.begin(); + + if (num != 0) // process left over data + { + if (num+len >= blockSize) + { + memcpy(data+num, input, blockSize-num); + AuthenticateBlocks(data, blockSize); + input += (blockSize-num); + len -= (blockSize-num); + num = 0; + // drop through and do the rest + } + else + { + memcpy(data+num, input, len); + num += (unsigned int)len; + return; + } + } + + // now process the input data in blocks of blockSize bytes and save the leftovers to m_data + if (len >= blockSize) + { + size_t leftOver = AuthenticateBlocks(input, len); + input += (len - leftOver); + len = leftOver; + } + + memcpy(data, input, len); + num = (unsigned int)len; +} + +void AuthenticatedSymmetricCipherBase::SetKey(const byte *userKey, size_t keylength, const NameValuePairs ¶ms) +{ + m_bufferedDataLength = 0; + m_state = State_Start; + + SetKeyWithoutResync(userKey, keylength, params); + m_state = State_KeySet; + + size_t length; + const byte *iv = GetIVAndThrowIfInvalid(params, length); + if (iv) + Resynchronize(iv, (int)length); +} + +void AuthenticatedSymmetricCipherBase::Resynchronize(const byte *iv, int length) +{ + if (m_state < State_KeySet) + throw BadState(AlgorithmName(), "Resynchronize", "key is set"); + + m_bufferedDataLength = 0; + m_totalHeaderLength = m_totalMessageLength = m_totalFooterLength = 0; + m_state = State_KeySet; + + Resync(iv, this->ThrowIfInvalidIVLength(length)); + m_state = State_IVSet; +} + +void AuthenticatedSymmetricCipherBase::Update(const byte *input, size_t length) +{ + if (length == 0) + return; + + switch (m_state) + { + case State_Start: + case State_KeySet: + throw BadState(AlgorithmName(), "Update", "setting key and IV"); + case State_IVSet: + AuthenticateData(input, length); + m_totalHeaderLength += length; + break; + case State_AuthUntransformed: + case State_AuthTransformed: + AuthenticateLastConfidentialBlock(); + m_bufferedDataLength = 0; + m_state = State_AuthFooter; + // fall through + case State_AuthFooter: + AuthenticateData(input, length); + m_totalFooterLength += length; + break; + default: + assert(false); + } +} + +void AuthenticatedSymmetricCipherBase::ProcessData(byte *outString, const byte *inString, size_t length) +{ + m_totalMessageLength += length; + if (m_state >= State_IVSet && m_totalMessageLength > MaxMessageLength()) + throw InvalidArgument(AlgorithmName() + ": message length exceeds maximum"); + +reswitch: + switch (m_state) + { + case State_Start: + case State_KeySet: + throw BadState(AlgorithmName(), "ProcessData", "setting key and IV"); + case State_AuthFooter: + throw BadState(AlgorithmName(), "ProcessData was called after footer input has started"); + case State_IVSet: + AuthenticateLastHeaderBlock(); + m_bufferedDataLength = 0; + m_state = AuthenticationIsOnPlaintext()==IsForwardTransformation() ? State_AuthUntransformed : State_AuthTransformed; + goto reswitch; + case State_AuthUntransformed: + AuthenticateData(inString, length); + AccessSymmetricCipher().ProcessData(outString, inString, length); + break; + case State_AuthTransformed: + AccessSymmetricCipher().ProcessData(outString, inString, length); + AuthenticateData(outString, length); + break; + default: + assert(false); + } +} + +void AuthenticatedSymmetricCipherBase::TruncatedFinal(byte *mac, size_t macSize) +{ + if (m_totalHeaderLength > MaxHeaderLength()) + throw InvalidArgument(AlgorithmName() + ": header length of " + IntToString(m_totalHeaderLength) + " exceeds the maximum of " + IntToString(MaxHeaderLength())); + + if (m_totalFooterLength > MaxFooterLength()) + { + if (MaxFooterLength() == 0) + throw InvalidArgument(AlgorithmName() + ": additional authenticated data (AAD) cannot be input after data to be encrypted or decrypted"); + else + throw InvalidArgument(AlgorithmName() + ": footer length of " + IntToString(m_totalFooterLength) + " exceeds the maximum of " + IntToString(MaxFooterLength())); + } + + switch (m_state) + { + case State_Start: + case State_KeySet: + throw BadState(AlgorithmName(), "TruncatedFinal", "setting key and IV"); + + case State_IVSet: + AuthenticateLastHeaderBlock(); + m_bufferedDataLength = 0; + // fall through + + case State_AuthUntransformed: + case State_AuthTransformed: + AuthenticateLastConfidentialBlock(); + m_bufferedDataLength = 0; + // fall through + + case State_AuthFooter: + AuthenticateLastFooterBlock(mac, macSize); + m_bufferedDataLength = 0; + break; + + default: + assert(false); + } + + m_state = State_KeySet; +} + +NAMESPACE_END + +#endif -- cgit v1.2.3