Botan  2.15.0
Crypto and TLS for C++11
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 
16 namespace 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 */
23 class BOTAN_PUBLIC_API(2,0) EMSA_X931 final : public EMSA
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
virtual std::string name() const =0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
virtual void update(const uint8_t input[], size_t length)=0
virtual bool verify(const secure_vector< uint8_t > &coded, const secure_vector< uint8_t > &raw, size_t key_bits)=0
Definition: alg_id.cpp:13
virtual secure_vector< uint8_t > raw_data()=0
virtual secure_vector< uint8_t > encoding_of(const secure_vector< uint8_t > &msg, size_t output_bits, RandomNumberGenerator &rng)=0
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
EMSA * clone() override
Definition: emsa_x931.h:31
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:145
MechanismType hash