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/ccm.cpp | 280 +++++++++++++++++++++++++++---------------------------- 1 file changed, 140 insertions(+), 140 deletions(-) (limited to 'CryptoPP/ccm.cpp') diff --git a/CryptoPP/ccm.cpp b/CryptoPP/ccm.cpp index 036878719..030828ad8 100644 --- a/CryptoPP/ccm.cpp +++ b/CryptoPP/ccm.cpp @@ -1,140 +1,140 @@ -// ccm.cpp - written and placed in the public domain by Wei Dai - -#include "pch.h" - -#ifndef CRYPTOPP_IMPORTS - -#include "ccm.h" - -NAMESPACE_BEGIN(CryptoPP) - -void CCM_Base::SetKeyWithoutResync(const byte *userKey, size_t keylength, const NameValuePairs ¶ms) -{ - BlockCipher &blockCipher = AccessBlockCipher(); - - blockCipher.SetKey(userKey, keylength, params); - - if (blockCipher.BlockSize() != REQUIRED_BLOCKSIZE) - throw InvalidArgument(AlgorithmName() + ": block size of underlying block cipher is not 16"); - - m_digestSize = params.GetIntValueWithDefault(Name::DigestSize(), DefaultDigestSize()); - if (m_digestSize % 2 > 0 || m_digestSize < 4 || m_digestSize > 16) - throw InvalidArgument(AlgorithmName() + ": DigestSize must be 4, 6, 8, 10, 12, 14, or 16"); - - m_buffer.Grow(2*REQUIRED_BLOCKSIZE); - m_L = 8; -} - -void CCM_Base::Resync(const byte *iv, size_t len) -{ - BlockCipher &cipher = AccessBlockCipher(); - - m_L = REQUIRED_BLOCKSIZE-1-(int)len; - assert(m_L >= 2); - if (m_L > 8) - m_L = 8; - - m_buffer[0] = byte(m_L-1); // flag - memcpy(m_buffer+1, iv, len); - memset(m_buffer+1+len, 0, REQUIRED_BLOCKSIZE-1-len); - - if (m_state >= State_IVSet) - m_ctr.Resynchronize(m_buffer, REQUIRED_BLOCKSIZE); - else - m_ctr.SetCipherWithIV(cipher, m_buffer); - - m_ctr.Seek(REQUIRED_BLOCKSIZE); - m_aadLength = 0; - m_messageLength = 0; -} - -void CCM_Base::UncheckedSpecifyDataLengths(lword headerLength, lword messageLength, lword footerLength) -{ - if (m_state != State_IVSet) - throw BadState(AlgorithmName(), "SpecifyDataLengths", "or after State_IVSet"); - - m_aadLength = headerLength; - m_messageLength = messageLength; - - byte *cbcBuffer = CBC_Buffer(); - const BlockCipher &cipher = GetBlockCipher(); - - cbcBuffer[0] = byte(64*(headerLength>0) + 8*((m_digestSize-2)/2) + (m_L-1)); // flag - PutWord(true, BIG_ENDIAN_ORDER, cbcBuffer+REQUIRED_BLOCKSIZE-8, m_messageLength); - memcpy(cbcBuffer+1, m_buffer+1, REQUIRED_BLOCKSIZE-1-m_L); - cipher.ProcessBlock(cbcBuffer); - - if (headerLength>0) - { - assert(m_bufferedDataLength == 0); - - if (headerLength < ((1<<16) - (1<<8))) - { - PutWord(true, BIG_ENDIAN_ORDER, m_buffer, (word16)headerLength); - m_bufferedDataLength = 2; - } - else if (headerLength < (W64LIT(1)<<32)) - { - m_buffer[0] = 0xff; - m_buffer[1] = 0xfe; - PutWord(false, BIG_ENDIAN_ORDER, m_buffer+2, (word32)headerLength); - m_bufferedDataLength = 6; - } - else - { - m_buffer[0] = 0xff; - m_buffer[1] = 0xff; - PutWord(false, BIG_ENDIAN_ORDER, m_buffer+2, headerLength); - m_bufferedDataLength = 10; - } - } -} - -size_t CCM_Base::AuthenticateBlocks(const byte *data, size_t len) -{ - byte *cbcBuffer = CBC_Buffer(); - const BlockCipher &cipher = GetBlockCipher(); - return cipher.AdvancedProcessBlocks(cbcBuffer, data, cbcBuffer, len, BlockTransformation::BT_DontIncrementInOutPointers|BlockTransformation::BT_XorInput); -} - -void CCM_Base::AuthenticateLastHeaderBlock() -{ - byte *cbcBuffer = CBC_Buffer(); - const BlockCipher &cipher = GetBlockCipher(); - - if (m_aadLength != m_totalHeaderLength) - throw InvalidArgument(AlgorithmName() + ": header length doesn't match that given in SpecifyDataLengths"); - - if (m_bufferedDataLength > 0) - { - xorbuf(cbcBuffer, m_buffer, m_bufferedDataLength); - cipher.ProcessBlock(cbcBuffer); - m_bufferedDataLength = 0; - } -} - -void CCM_Base::AuthenticateLastConfidentialBlock() -{ - byte *cbcBuffer = CBC_Buffer(); - const BlockCipher &cipher = GetBlockCipher(); - - if (m_messageLength != m_totalMessageLength) - throw InvalidArgument(AlgorithmName() + ": message length doesn't match that given in SpecifyDataLengths"); - - if (m_bufferedDataLength > 0) - { - xorbuf(cbcBuffer, m_buffer, m_bufferedDataLength); - cipher.ProcessBlock(cbcBuffer); - m_bufferedDataLength = 0; - } -} - -void CCM_Base::AuthenticateLastFooterBlock(byte *mac, size_t macSize) -{ - m_ctr.Seek(0); - m_ctr.ProcessData(mac, CBC_Buffer(), macSize); -} - -NAMESPACE_END - -#endif +// ccm.cpp - written and placed in the public domain by Wei Dai + +#include "pch.h" + +#ifndef CRYPTOPP_IMPORTS + +#include "ccm.h" + +NAMESPACE_BEGIN(CryptoPP) + +void CCM_Base::SetKeyWithoutResync(const byte *userKey, size_t keylength, const NameValuePairs ¶ms) +{ + BlockCipher &blockCipher = AccessBlockCipher(); + + blockCipher.SetKey(userKey, keylength, params); + + if (blockCipher.BlockSize() != REQUIRED_BLOCKSIZE) + throw InvalidArgument(AlgorithmName() + ": block size of underlying block cipher is not 16"); + + m_digestSize = params.GetIntValueWithDefault(Name::DigestSize(), DefaultDigestSize()); + if (m_digestSize % 2 > 0 || m_digestSize < 4 || m_digestSize > 16) + throw InvalidArgument(AlgorithmName() + ": DigestSize must be 4, 6, 8, 10, 12, 14, or 16"); + + m_buffer.Grow(2*REQUIRED_BLOCKSIZE); + m_L = 8; +} + +void CCM_Base::Resync(const byte *iv, size_t len) +{ + BlockCipher &cipher = AccessBlockCipher(); + + m_L = REQUIRED_BLOCKSIZE-1-(int)len; + assert(m_L >= 2); + if (m_L > 8) + m_L = 8; + + m_buffer[0] = byte(m_L-1); // flag + memcpy(m_buffer+1, iv, len); + memset(m_buffer+1+len, 0, REQUIRED_BLOCKSIZE-1-len); + + if (m_state >= State_IVSet) + m_ctr.Resynchronize(m_buffer, REQUIRED_BLOCKSIZE); + else + m_ctr.SetCipherWithIV(cipher, m_buffer); + + m_ctr.Seek(REQUIRED_BLOCKSIZE); + m_aadLength = 0; + m_messageLength = 0; +} + +void CCM_Base::UncheckedSpecifyDataLengths(lword headerLength, lword messageLength, lword footerLength) +{ + if (m_state != State_IVSet) + throw BadState(AlgorithmName(), "SpecifyDataLengths", "or after State_IVSet"); + + m_aadLength = headerLength; + m_messageLength = messageLength; + + byte *cbcBuffer = CBC_Buffer(); + const BlockCipher &cipher = GetBlockCipher(); + + cbcBuffer[0] = byte(64*(headerLength>0) + 8*((m_digestSize-2)/2) + (m_L-1)); // flag + PutWord(true, BIG_ENDIAN_ORDER, cbcBuffer+REQUIRED_BLOCKSIZE-8, m_messageLength); + memcpy(cbcBuffer+1, m_buffer+1, REQUIRED_BLOCKSIZE-1-m_L); + cipher.ProcessBlock(cbcBuffer); + + if (headerLength>0) + { + assert(m_bufferedDataLength == 0); + + if (headerLength < ((1<<16) - (1<<8))) + { + PutWord(true, BIG_ENDIAN_ORDER, m_buffer, (word16)headerLength); + m_bufferedDataLength = 2; + } + else if (headerLength < (W64LIT(1)<<32)) + { + m_buffer[0] = 0xff; + m_buffer[1] = 0xfe; + PutWord(false, BIG_ENDIAN_ORDER, m_buffer+2, (word32)headerLength); + m_bufferedDataLength = 6; + } + else + { + m_buffer[0] = 0xff; + m_buffer[1] = 0xff; + PutWord(false, BIG_ENDIAN_ORDER, m_buffer+2, headerLength); + m_bufferedDataLength = 10; + } + } +} + +size_t CCM_Base::AuthenticateBlocks(const byte *data, size_t len) +{ + byte *cbcBuffer = CBC_Buffer(); + const BlockCipher &cipher = GetBlockCipher(); + return cipher.AdvancedProcessBlocks(cbcBuffer, data, cbcBuffer, len, BlockTransformation::BT_DontIncrementInOutPointers|BlockTransformation::BT_XorInput); +} + +void CCM_Base::AuthenticateLastHeaderBlock() +{ + byte *cbcBuffer = CBC_Buffer(); + const BlockCipher &cipher = GetBlockCipher(); + + if (m_aadLength != m_totalHeaderLength) + throw InvalidArgument(AlgorithmName() + ": header length doesn't match that given in SpecifyDataLengths"); + + if (m_bufferedDataLength > 0) + { + xorbuf(cbcBuffer, m_buffer, m_bufferedDataLength); + cipher.ProcessBlock(cbcBuffer); + m_bufferedDataLength = 0; + } +} + +void CCM_Base::AuthenticateLastConfidentialBlock() +{ + byte *cbcBuffer = CBC_Buffer(); + const BlockCipher &cipher = GetBlockCipher(); + + if (m_messageLength != m_totalMessageLength) + throw InvalidArgument(AlgorithmName() + ": message length doesn't match that given in SpecifyDataLengths"); + + if (m_bufferedDataLength > 0) + { + xorbuf(cbcBuffer, m_buffer, m_bufferedDataLength); + cipher.ProcessBlock(cbcBuffer); + m_bufferedDataLength = 0; + } +} + +void CCM_Base::AuthenticateLastFooterBlock(byte *mac, size_t macSize) +{ + m_ctr.Seek(0); + m_ctr.ProcessData(mac, CBC_Buffer(), macSize); +} + +NAMESPACE_END + +#endif -- cgit v1.2.3