Botan  2.12.1
Crypto and TLS for C++11
sha2_64.h
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1 /*
2 * SHA-{384,512}
3 * (C) 1999-2010,2015 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_SHA_64BIT_H_
9 #define BOTAN_SHA_64BIT_H_
10 
11 #include <botan/mdx_hash.h>
12 
14 
15 namespace Botan {
16 
17 /**
18 * SHA-384
19 */
21  {
22  public:
23  std::string name() const override { return "SHA-384"; }
24  size_t output_length() const override { return 48; }
25  HashFunction* clone() const override { return new SHA_384; }
26  std::unique_ptr<HashFunction> copy_state() const override;
27  std::string provider() const override;
28 
29  void clear() override;
30 
31  SHA_384() : MDx_HashFunction(128, true, true, 16), m_digest(8)
32  { clear(); }
33  private:
34  void compress_n(const uint8_t[], size_t blocks) override;
35  void copy_out(uint8_t[]) override;
36 
37  secure_vector<uint64_t> m_digest;
38  };
39 
40 /**
41 * SHA-512
42 */
44  {
45  public:
46  std::string name() const override { return "SHA-512"; }
47  size_t output_length() const override { return 64; }
48  HashFunction* clone() const override { return new SHA_512; }
49  std::unique_ptr<HashFunction> copy_state() const override;
50  std::string provider() const override;
51 
52  void clear() override;
53 
54  /*
55  * Perform a SHA-512 compression. For internal use
56  */
57  static void compress_digest(secure_vector<uint64_t>& digest,
58  const uint8_t input[],
59  size_t blocks);
60 
61  SHA_512() : MDx_HashFunction(128, true, true, 16), m_digest(8)
62  { clear(); }
63  private:
64  void compress_n(const uint8_t[], size_t blocks) override;
65  void copy_out(uint8_t[]) override;
66 
67  static const uint64_t K[80];
68 
69 #if defined(BOTAN_HAS_SHA2_64_BMI2)
70  static void compress_digest_bmi2(secure_vector<uint64_t>& digest,
71  const uint8_t input[],
72  size_t blocks);
73 #endif
74 
75  secure_vector<uint64_t> m_digest;
76  };
77 
78 /**
79 * SHA-512/256
80 */
82  {
83  public:
84  std::string name() const override { return "SHA-512-256"; }
85  size_t output_length() const override { return 32; }
86  HashFunction* clone() const override { return new SHA_512_256; }
87  std::unique_ptr<HashFunction> copy_state() const override;
88  std::string provider() const override;
89 
90  void clear() override;
91 
92  SHA_512_256() : MDx_HashFunction(128, true, true, 16), m_digest(8) { clear(); }
93  private:
94  void compress_n(const uint8_t[], size_t blocks) override;
95  void copy_out(uint8_t[]) override;
96 
97  secure_vector<uint64_t> m_digest;
98  };
99 
100 }
101 
102 #endif
void clear() override
Definition: mdx_hash.cpp:41
size_t output_length() const override
Definition: sha2_64.h:85
std::string name() const override
Definition: sha2_64.h:84
std::string name() const override
Definition: sha2_64.h:23
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
std::string name() const override
Definition: sha2_64.h:46
size_t output_length() const override
Definition: sha2_64.h:47
virtual void compress_n(const uint8_t blocks[], size_t block_n)=0
virtual void copy_out(uint8_t buffer[])=0
virtual std::string provider() const
Definition: hash.h:58
HashFunction * clone() const override
Definition: sha2_64.h:86
size_t output_length() const override
Definition: sha2_64.h:24
Definition: alg_id.cpp:13
HashFunction * clone() const override
Definition: sha2_64.h:25
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
virtual std::unique_ptr< HashFunction > copy_state() const =0
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:139
HashFunction * clone() const override
Definition: sha2_64.h:48