/usr/include/botan-2/botan/cmac.h is in libbotan-2-dev 2.4.0-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | /*
* 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>
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
|