Botan  2.12.1
Crypto and TLS for C++11
emsa_pkcs1.h
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1 /*
2 * PKCS #1 v1.5 signature padding
3 * (C) 1999-2008 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_EMSA_PKCS1_H_
9 #define BOTAN_EMSA_PKCS1_H_
10 
11 #include <botan/emsa.h>
12 #include <botan/hash.h>
13 
14 BOTAN_FUTURE_INTERNAL_HEADER(emsa_pkcs1.h)
15 
16 namespace Botan {
17 
18 /**
19 * PKCS #1 v1.5 signature padding
20 * aka PKCS #1 block type 1
21 * aka EMSA3 from IEEE 1363
22 */
24  {
25  public:
26  /**
27  * @param hash the hash function to use
28  */
29  explicit EMSA_PKCS1v15(HashFunction* hash);
30 
31  EMSA* clone() override { return new EMSA_PKCS1v15(m_hash->clone()); }
32 
33  void update(const uint8_t[], size_t) override;
34 
36 
38  RandomNumberGenerator& rng) override;
39 
41  size_t) override;
42 
43  std::string name() const override
44  { return "EMSA3(" + m_hash->name() + ")"; }
45 
47  const std::string& cert_hash_name) const override;
48  private:
49  std::unique_ptr<HashFunction> m_hash;
50  std::vector<uint8_t> m_hash_id;
51  };
52 
53 /**
54 * EMSA_PKCS1v15_Raw which is EMSA_PKCS1v15 without a hash or digest id
55 * (which according to QCA docs is "identical to PKCS#11's CKM_RSA_PKCS
56 * mechanism", something I have not confirmed)
57 */
59  {
60  public:
61  EMSA* clone() override { return new EMSA_PKCS1v15_Raw(); }
62 
63  void update(const uint8_t[], size_t) override;
64 
66 
68  RandomNumberGenerator& rng) override;
69 
71  size_t) override;
72 
73  /**
74  * @param hash_algo if non-empty, the digest id for that hash is
75  * included in the signature.
76  */
77  EMSA_PKCS1v15_Raw(const std::string& hash_algo = "");
78 
79  std::string name() const override
80  {
81  if(m_hash_name.empty()) return "EMSA3(Raw)";
82  else return "EMSA3(Raw," + m_hash_name + ")";
83  }
84 
85  private:
86  size_t m_hash_output_len = 0;
87  std::string m_hash_name;
88  std::vector<uint8_t> m_hash_id;
89  secure_vector<uint8_t> m_message;
90  };
91 
92 }
93 
94 #endif
virtual AlgorithmIdentifier config_for_x509(const Private_Key &key, const std::string &cert_hash_name) const
Definition: emsa.cpp:38
std::string name() const override
Definition: emsa_pkcs1.h:79
EMSA * clone() override
Definition: emsa_pkcs1.h:61
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
EMSA * clone() override
Definition: emsa_pkcs1.h:31
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
AlgorithmIdentifier hash_algo
Definition: x509_obj.cpp:22
virtual secure_vector< uint8_t > encoding_of(const secure_vector< uint8_t > &msg, size_t output_bits, RandomNumberGenerator &rng)=0
std::string name() const override
Definition: emsa_pkcs1.h:43
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:139
MechanismType hash