Botan  2.19.1
Crypto and TLS for C++11
emsa1.h
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1 /*
2 * EMSA1
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_EMSA1_H_
9 #define BOTAN_EMSA1_H_
10 
11 #include <botan/emsa.h>
12 #include <botan/hash.h>
13 
15 
16 namespace Botan {
17 
18 /**
19 * EMSA1 from IEEE 1363
20 * Essentially, sign the hash directly
21 */
22 class BOTAN_PUBLIC_API(2,0) EMSA1 final : public EMSA
23  {
24  public:
25  /**
26  * @param hash the hash function to use
27  */
28  explicit EMSA1(HashFunction* hash) : m_hash(hash) {}
29 
30  EMSA* clone() override;
31 
32  std::string name() const override;
33 
35  const std::string& cert_hash_name) const override;
36  private:
37  size_t hash_output_length() const { return m_hash->output_length(); }
38 
39  void update(const uint8_t[], size_t) override;
40  secure_vector<uint8_t> raw_data() override;
41 
42  secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>& msg,
43  size_t output_bits,
44  RandomNumberGenerator& rng) override;
45 
46  bool verify(const secure_vector<uint8_t>& coded,
47  const secure_vector<uint8_t>& raw,
48  size_t key_bits) override;
49 
50  std::unique_ptr<HashFunction> m_hash;
51  };
52 
53 }
54 
55 #endif
EMSA1(HashFunction *hash)
Definition: emsa1.h:28
virtual std::string name() const =0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
virtual EMSA * clone()=0
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
virtual AlgorithmIdentifier config_for_x509(const Private_Key &key, const std::string &cert_hash_name) const
Definition: emsa.cpp:38
std::unique_ptr< HashFunction > m_hash
Definition: tpm.cpp:446
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:136
MechanismType hash