diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/mac/cmac/cmac.h')
-rw-r--r-- | comm/third_party/botan/src/lib/mac/cmac/cmac.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/mac/cmac/cmac.h b/comm/third_party/botan/src/lib/mac/cmac/cmac.h new file mode 100644 index 0000000000..f73167590d --- /dev/null +++ b/comm/third_party/botan/src/lib/mac/cmac/cmac.h @@ -0,0 +1,67 @@ +/* +* CMAC +* (C) 1999-2007,2014 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_CMAC_H_ +#define BOTAN_CMAC_H_ + +#include <botan/mac.h> +#include <botan/block_cipher.h> + +BOTAN_FUTURE_INTERNAL_HEADER(cmac.h) + +namespace Botan { + +/** +* CMAC, also known as OMAC1 +*/ +class BOTAN_PUBLIC_API(2,0) CMAC final : public MessageAuthenticationCode + { + public: + std::string name() const override; + size_t output_length() const override { return m_block_size; } + MessageAuthenticationCode* clone() const override; + + void clear() override; + + Key_Length_Specification key_spec() const override + { + return m_cipher->key_spec(); + } + + /** + * CMAC's polynomial doubling operation + * + * This function was only exposed for use elsewhere in the library, but it is not + * longer used. This function will be removed in a future release. + * + * @param in the input + */ + static secure_vector<uint8_t> + BOTAN_DEPRECATED("This was only for internal use and is no longer used") + poly_double(const secure_vector<uint8_t>& in); + + /** + * @param cipher the block cipher to use + */ + explicit CMAC(BlockCipher* cipher); + + CMAC(const CMAC&) = delete; + CMAC& operator=(const CMAC&) = delete; + private: + void add_data(const uint8_t[], size_t) override; + void final_result(uint8_t[]) override; + void key_schedule(const uint8_t[], size_t) override; + + std::unique_ptr<BlockCipher> m_cipher; + secure_vector<uint8_t> m_buffer, m_state, m_B, m_P; + const size_t m_block_size; + size_t m_position; + }; + +} + +#endif |