diff options
author | lloyd <[email protected]> | 2014-01-10 03:41:59 +0000 |
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committer | lloyd <[email protected]> | 2014-01-10 03:41:59 +0000 |
commit | 6894dca64c04936d07048c0e8cbf7e25858548c3 (patch) | |
tree | 5d572bfde9fe667dab14e3f04b5285a85d8acd95 /src/lib/mac/cmac/cmac.h | |
parent | 9efa3be92442afb3d0b69890a36c7f122df18eda (diff) |
Move lib into src
Diffstat (limited to 'src/lib/mac/cmac/cmac.h')
-rw-r--r-- | src/lib/mac/cmac/cmac.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/lib/mac/cmac/cmac.h b/src/lib/mac/cmac/cmac.h new file mode 100644 index 000000000..c1b75cfa5 --- /dev/null +++ b/src/lib/mac/cmac/cmac.h @@ -0,0 +1,63 @@ +/* +* CMAC +* (C) 1999-2007 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_CMAC_H__ +#define BOTAN_CMAC_H__ + +#include <botan/mac.h> +#include <botan/block_cipher.h> + +namespace Botan { + +/** +* CMAC, also known as OMAC1 +*/ +class BOTAN_DLL CMAC : public MessageAuthenticationCode + { + public: + std::string name() const; + size_t output_length() const { return e->block_size(); } + MessageAuthenticationCode* clone() const; + + void clear(); + + Key_Length_Specification key_spec() const + { + return e->key_spec(); + } + + /** + * CMAC's polynomial doubling operation + * @param in the input + * @param polynomial the byte value of the polynomial + */ + static secure_vector<byte> poly_double(const secure_vector<byte>& in, + byte polynomial); + + /** + * @param cipher the underlying block cipher to use + */ + CMAC(BlockCipher* cipher); + + CMAC(const CMAC&) = delete; + CMAC& operator=(const CMAC&) = delete; + + ~CMAC(); + private: + void add_data(const byte[], size_t); + void final_result(byte[]); + void key_schedule(const byte[], size_t); + + BlockCipher* e; + secure_vector<byte> buffer, state, B, P; + size_t position; + byte polynomial; + }; + +} + +#endif |