Botan 2.1.0 Crypto and TLS for C++11

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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
14 namespace Botan {
15
16 /**
17 * EMSA from X9.31 (EMSA2 in IEEE 1363)
18 * Useful for Rabin-Williams, also sometimes used with RSA in
19 * odd protocols.
20 */
21 class BOTAN_DLL EMSA_X931 final : public EMSA
22 {
23 public:
24 /**
25 * @param hash the hash function to use
26 */
27 explicit EMSA_X931(HashFunction* hash);
28
29 EMSA* clone() override { return new EMSA_X931(m_hash->clone()); }
30 private:
31 void update(const uint8_t[], size_t) override;
32 secure_vector<uint8_t> raw_data() override;
33
34 secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>&, size_t,
35 RandomNumberGenerator& rng) override;
36
37 bool verify(const secure_vector<uint8_t>&, const secure_vector<uint8_t>&,
38 size_t) override;
39
40 secure_vector<uint8_t> m_empty_hash;
41 std::unique_ptr<HashFunction> m_hash;
42 uint8_t m_hash_id;
43 };
44
45 }
46
47 #endif
Botan::RandomNumberGenerator
Definition: rng.h:25
m_hash_id
std::vector< uint8_t > m_hash_id
Definition: tpm.cpp:440
Botan::secure_vector
std::vector< T, secure_allocator< T >> secure_vector
Definition: secmem.h:121
Botan::EMSA_X931
Definition: emsa_x931.h:21
Botan::EMSA
Definition: emsa.h:21
Botan
Definition: alg_id.cpp:13
Botan::HashFunction
Definition: hash.h:19
m_hash
std::unique_ptr< HashFunction > m_hash
Definition: tpm.cpp:439
Botan::EMSA_X931::clone
EMSA * clone() override
Definition: emsa_x931.h:29
hash
MechanismType hash
Definition: p11_mechanism.cpp:63