Botan  2.4.0
Crypto and TLS for C++11
tiger.h
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1 /*
2 * Tiger
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_TIGER_H_
9 #define BOTAN_TIGER_H_
10 
11 #include <botan/mdx_hash.h>
12 
13 namespace Botan {
14 
15 /**
16 * Tiger
17 */
18 class BOTAN_PUBLIC_API(2,0) Tiger final : public MDx_HashFunction
19  {
20  public:
21  std::string name() const override;
22  size_t output_length() const override { return m_hash_len; }
23 
24  HashFunction* clone() const override
25  {
26  return new Tiger(output_length(), m_passes);
27  }
28 
29  std::unique_ptr<HashFunction> copy_state() const override;
30 
31  void clear() override;
32 
33  /**
34  * @param out_size specifies the output length; can be 16, 20, or 24
35  * @param passes to make in the algorithm
36  */
37  Tiger(size_t out_size = 24, size_t passes = 3);
38  private:
39  void compress_n(const uint8_t[], size_t block) override;
40  void copy_out(uint8_t[]) override;
41 
42  static void pass(uint64_t& A, uint64_t& B, uint64_t& C,
43  const secure_vector<uint64_t>& M,
44  uint8_t mul);
45 
46  static const uint64_t SBOX1[256];
47  static const uint64_t SBOX2[256];
48  static const uint64_t SBOX3[256];
49  static const uint64_t SBOX4[256];
50 
51  secure_vector<uint64_t> m_X, m_digest;
52  const size_t m_hash_len, m_passes;
53  };
54 
55 }
56 
57 #endif
HashFunction * clone() const override
Definition: tiger.h:24
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:27
Definition: alg_id.cpp:13
size_t output_length() const override
Definition: tiger.h:22
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:88