Botan 2.19.1
Crypto and TLS for C&
emsa_x931.h
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1/*
2* X9.31 EMSA
3* (C) 1999-2007 Jack Lloyd
4*
5* Botan is released under the Simplified BSD License (see license.txt)
6*/
7
8#ifndef BOTAN_EMSA_X931_H_
9#define BOTAN_EMSA_X931_H_
10
11#include <botan/emsa.h>
12#include <botan/hash.h>
13
15
16namespace Botan {
17
18/**
19* EMSA from X9.31 (EMSA2 in IEEE 1363)
20* Useful for Rabin-Williams, also sometimes used with RSA in
21* odd protocols.
22*/
24 {
25 public:
26 /**
27 * @param hash the hash function to use
28 */
29 explicit EMSA_X931(HashFunction* hash);
30
31 EMSA* clone() override { return new EMSA_X931(m_hash->clone()); }
32
33 std::string name() const override;
34
35 private:
36 void update(const uint8_t[], size_t) override;
38
40 RandomNumberGenerator& rng) override;
41
43 size_t) override;
44
45 secure_vector<uint8_t> m_empty_hash;
46 std::unique_ptr<HashFunction> m_hash;
47 uint8_t m_hash_id;
48 };
49
50}
51
52#endif
EMSA * clone() override
Definition: emsa_x931.h:31
virtual secure_vector< uint8_t > encoding_of(const secure_vector< uint8_t > &msg, size_t output_bits, RandomNumberGenerator &rng)=0
virtual bool verify(const secure_vector< uint8_t > &coded, const secure_vector< uint8_t > &raw, size_t key_bits)=0
virtual secure_vector< uint8_t > raw_data()=0
virtual std::string name() const =0
virtual void update(const uint8_t input[], size_t length)=0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:136
Definition: alg_id.cpp:13
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
MechanismType hash