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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/dmac.h | |
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/dmac.h')
-rw-r--r-- | cryptopp562/dmac.h | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/cryptopp562/dmac.h b/cryptopp562/dmac.h deleted file mode 100644 index 80b54ac..0000000 --- a/cryptopp562/dmac.h +++ /dev/null @@ -1,93 +0,0 @@ -#ifndef CRYPTOPP_DMAC_H -#define CRYPTOPP_DMAC_H - -#include "cbcmac.h" - -NAMESPACE_BEGIN(CryptoPP) - -//! _ -template <class T> -class CRYPTOPP_NO_VTABLE DMAC_Base : public SameKeyLengthAs<T>, public MessageAuthenticationCode -{ -public: - static std::string StaticAlgorithmName() {return std::string("DMAC(") + T::StaticAlgorithmName() + ")";} - - CRYPTOPP_CONSTANT(DIGESTSIZE=T::BLOCKSIZE) - - DMAC_Base() {} - - void UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs ¶ms); - void Update(const byte *input, size_t length); - void TruncatedFinal(byte *mac, size_t size); - unsigned int DigestSize() const {return DIGESTSIZE;} - -private: - byte *GenerateSubKeys(const byte *key, size_t keylength); - - size_t m_subkeylength; - SecByteBlock m_subkeys; - CBC_MAC<T> m_mac1; - typename T::Encryption m_f2; - unsigned int m_counter; -}; - -//! DMAC -/*! Based on "CBC MAC for Real-Time Data Sources" by Erez Petrank - and Charles Rackoff. T should be a class derived from BlockCipherDocumentation. -*/ -template <class T> -class DMAC : public MessageAuthenticationCodeFinal<DMAC_Base<T> > -{ -public: - DMAC() {} - DMAC(const byte *key, size_t length=DMAC_Base<T>::DEFAULT_KEYLENGTH) - {this->SetKey(key, length);} -}; - -template <class T> -void DMAC_Base<T>::UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs ¶ms) -{ - m_subkeylength = T::StaticGetValidKeyLength(T::BLOCKSIZE); - m_subkeys.resize(2*UnsignedMin((unsigned int)T::BLOCKSIZE, m_subkeylength)); - m_mac1.SetKey(GenerateSubKeys(key, length), m_subkeylength, params); - m_f2.SetKey(m_subkeys+m_subkeys.size()/2, m_subkeylength, params); - m_counter = 0; - m_subkeys.resize(0); -} - -template <class T> -void DMAC_Base<T>::Update(const byte *input, size_t length) -{ - m_mac1.Update(input, length); - m_counter = (unsigned int)((m_counter + length) % T::BLOCKSIZE); -} - -template <class T> -void DMAC_Base<T>::TruncatedFinal(byte *mac, size_t size) -{ - ThrowIfInvalidTruncatedSize(size); - - byte pad[T::BLOCKSIZE]; - byte padByte = byte(T::BLOCKSIZE-m_counter); - memset(pad, padByte, padByte); - m_mac1.Update(pad, padByte); - m_mac1.TruncatedFinal(mac, size); - m_f2.ProcessBlock(mac); - - m_counter = 0; // reset for next message -} - -template <class T> -byte *DMAC_Base<T>::GenerateSubKeys(const byte *key, size_t keylength) -{ - typename T::Encryption cipher(key, keylength); - memset(m_subkeys, 0, m_subkeys.size()); - cipher.ProcessBlock(m_subkeys); - m_subkeys[m_subkeys.size()/2 + T::BLOCKSIZE - 1] = 1; - cipher.ProcessBlock(m_subkeys+m_subkeys.size()/2); - return m_subkeys; -} - -NAMESPACE_END - -#endif |