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author | weidai <weidai11@users.noreply.github.com> | 2009-03-02 02:39:17 +0000 |
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committer | weidai <weidai11@users.noreply.github.com> | 2009-03-02 02:39:17 +0000 |
commit | d8a644fc4ee2af9dc62f2a8c167b023d0c71d13b (patch) | |
tree | 0fecaa7a6728d07549a41864ea2cedfb245f0bd3 /cmac.h | |
parent | fa25129ac981ceed9569496c02b83771b394fa40 (diff) | |
download | cryptopp-git-d8a644fc4ee2af9dc62f2a8c167b023d0c71d13b.tar.gz |
changes for 5.6:
- added AuthenticatedSymmetricCipher interface class and Filter wrappers
- added CCM, GCM (with SSE2 assembly), CMAC, and SEED
- improved AES speed on x86 and x64
- removed WORD64_AVAILABLE; compiler 64-bit int support is now required
Diffstat (limited to 'cmac.h')
-rw-r--r-- | cmac.h | 48 |
1 files changed, 48 insertions, 0 deletions
@@ -0,0 +1,48 @@ +#ifndef CRYPTOPP_CMAC_H +#define CRYPTOPP_CMAC_H + +#include "seckey.h" +#include "secblock.h" + +NAMESPACE_BEGIN(CryptoPP) + +//! _ +class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE CMAC_Base : public MessageAuthenticationCode +{ +public: + CMAC_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 const_cast<CMAC_Base*>(this)->AccessCipher().BlockSize();} + +protected: + virtual BlockCipher & AccessCipher() =0; + +private: + void ProcessBuf(); + SecByteBlock m_reg; + unsigned int m_counter; +}; + +/// <a href="http://www.cryptolounge.org/wiki/CMAC">CMAC</a> +/*! Template parameter T should be a class derived from BlockCipherDocumentation, for example AES, with a block size of 8, 16, or 32 */ +template <class T> +class CMAC : public MessageAuthenticationCodeImpl<CMAC_Base, CMAC<T> >, public SameKeyLengthAs<T> +{ +public: + CMAC() {} + CMAC(const byte *key, size_t length=SameKeyLengthAs<T>::DEFAULT_KEYLENGTH) + {this->SetKey(key, length);} + + static std::string StaticAlgorithmName() {return std::string("CMAC(") + T::StaticAlgorithmName() + ")";} + +private: + BlockCipher & AccessCipher() {return m_cipher;} + typename T::Encryption m_cipher; +}; + +NAMESPACE_END + +#endif |