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author | Malfurious <m@lfurio.us> | 2024-10-21 11:09:00 -0400 |
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committer | Malfurious <m@lfurio.us> | 2024-10-24 06:41:41 -0400 |
commit | 5494fc310acf0aabb9d828451331e44483eb21c7 (patch) | |
tree | 77280a586d52470fca89b9ed73f5f1faaf7907c6 /cryptopp562/cmac.cpp | |
parent | 428471d39fb8c205a9fad899c88c30a2cb7df685 (diff) | |
download | compass-5494fc310acf0aabb9d828451331e44483eb21c7.tar.gz compass-5494fc310acf0aabb9d828451331e44483eb21c7.zip |
Remove Crypto++ library
The tracked version of Crypto++ is going on 10 years old and doesn't
always compile properly on modern tooling.
This removes the entire subdirectory as well as references to files in
the build script. Due to the number of files touched by this commit, I
opt to add its replacement in the next commit.
Signed-off-by: Malfurious <m@lfurio.us>
Diffstat (limited to 'cryptopp562/cmac.cpp')
-rw-r--r-- | cryptopp562/cmac.cpp | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/cryptopp562/cmac.cpp b/cryptopp562/cmac.cpp deleted file mode 100644 index e8fa6fe..0000000 --- a/cryptopp562/cmac.cpp +++ /dev/null @@ -1,122 +0,0 @@ -// cmac.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-
-#ifndef CRYPTOPP_IMPORTS
-
-#include "cmac.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-static void MulU(byte *k, unsigned int length)
-{
- byte carry = 0;
-
- for (int i=length-1; i>=1; i-=2)
- {
- byte carry2 = k[i] >> 7;
- k[i] += k[i] + carry;
- carry = k[i-1] >> 7;
- k[i-1] += k[i-1] + carry2;
- }
-
- if (carry)
- {
- switch (length)
- {
- case 8:
- k[7] ^= 0x1b;
- break;
- case 16:
- k[15] ^= 0x87;
- break;
- case 32:
- k[30] ^= 4;
- k[31] ^= 0x23;
- break;
- default:
- throw InvalidArgument("CMAC: " + IntToString(length) + " is not a supported cipher block size");
- }
- }
-}
-
-void CMAC_Base::UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs ¶ms)
-{
- BlockCipher &cipher = AccessCipher();
- unsigned int blockSize = cipher.BlockSize();
-
- cipher.SetKey(key, length, params);
- m_reg.CleanNew(3*blockSize);
- m_counter = 0;
-
- cipher.ProcessBlock(m_reg, m_reg+blockSize);
- MulU(m_reg+blockSize, blockSize);
- memcpy(m_reg+2*blockSize, m_reg+blockSize, blockSize);
- MulU(m_reg+2*blockSize, blockSize);
-}
-
-void CMAC_Base::Update(const byte *input, size_t length)
-{
- if (!length)
- return;
-
- BlockCipher &cipher = AccessCipher();
- unsigned int blockSize = cipher.BlockSize();
-
- if (m_counter > 0)
- {
- unsigned int len = UnsignedMin(blockSize - m_counter, length);
- xorbuf(m_reg+m_counter, input, len);
- length -= len;
- input += len;
- m_counter += len;
-
- if (m_counter == blockSize && length > 0)
- {
- cipher.ProcessBlock(m_reg);
- m_counter = 0;
- }
- }
-
- if (length > blockSize)
- {
- assert(m_counter == 0);
- size_t leftOver = 1 + cipher.AdvancedProcessBlocks(m_reg, input, m_reg, length-1, BlockTransformation::BT_DontIncrementInOutPointers|BlockTransformation::BT_XorInput);
- input += (length - leftOver);
- length = leftOver;
- }
-
- if (length > 0)
- {
- assert(m_counter + length <= blockSize);
- xorbuf(m_reg+m_counter, input, length);
- m_counter += (unsigned int)length;
- }
-
- assert(m_counter > 0);
-}
-
-void CMAC_Base::TruncatedFinal(byte *mac, size_t size)
-{
- ThrowIfInvalidTruncatedSize(size);
-
- BlockCipher &cipher = AccessCipher();
- unsigned int blockSize = cipher.BlockSize();
-
- if (m_counter < blockSize)
- {
- m_reg[m_counter] ^= 0x80;
- cipher.AdvancedProcessBlocks(m_reg, m_reg+2*blockSize, m_reg, blockSize, BlockTransformation::BT_DontIncrementInOutPointers|BlockTransformation::BT_XorInput);
- }
- else
- cipher.AdvancedProcessBlocks(m_reg, m_reg+blockSize, m_reg, blockSize, BlockTransformation::BT_DontIncrementInOutPointers|BlockTransformation::BT_XorInput);
-
- memcpy(mac, m_reg, size);
-
- m_counter = 0;
- memset(m_reg, 0, blockSize);
-}
-
-NAMESPACE_END
-
-#endif
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