/usr/include/botan-2/botan/emsa_x931.h is in libbotan-2-dev 2.4.0-5ubuntu1.
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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 | /*
* X9.31 EMSA
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_EMSA_X931_H_
#define BOTAN_EMSA_X931_H_
#include <botan/emsa.h>
#include <botan/hash.h>
namespace Botan {
/**
* EMSA from X9.31 (EMSA2 in IEEE 1363)
* Useful for Rabin-Williams, also sometimes used with RSA in
* odd protocols.
*/
class BOTAN_PUBLIC_API(2,0) EMSA_X931 final : public EMSA
{
public:
/**
* @param hash the hash function to use
*/
explicit EMSA_X931(HashFunction* hash);
EMSA* clone() override { return new EMSA_X931(m_hash->clone()); }
std::string name() const override;
private:
void update(const uint8_t[], size_t) override;
secure_vector<uint8_t> raw_data() override;
secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>&, size_t,
RandomNumberGenerator& rng) override;
bool verify(const secure_vector<uint8_t>&, const secure_vector<uint8_t>&,
size_t) override;
secure_vector<uint8_t> m_empty_hash;
std::unique_ptr<HashFunction> m_hash;
uint8_t m_hash_id;
};
}
#endif
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