Botan  2.13.0
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 
14 
15 namespace Botan {
16 
17 /**
18 * Tiger
19 */
21  {
22  public:
23  std::string name() const override;
24  size_t output_length() const override { return m_hash_len; }
25 
26  HashFunction* clone() const override
27  {
28  return new Tiger(output_length(), m_passes);
29  }
30 
31  std::unique_ptr<HashFunction> copy_state() const override;
32 
33  void clear() override;
34 
35  /**
36  * @param out_size specifies the output length; can be 16, 20, or 24
37  * @param passes to make in the algorithm
38  */
39  Tiger(size_t out_size = 24, size_t passes = 3);
40  private:
41  void compress_n(const uint8_t[], size_t block) override;
42  void copy_out(uint8_t[]) override;
43 
44  static void pass(uint64_t& A, uint64_t& B, uint64_t& C,
45  const secure_vector<uint64_t>& M,
46  uint8_t mul);
47 
48  static const uint64_t SBOX1[256];
49  static const uint64_t SBOX2[256];
50  static const uint64_t SBOX3[256];
51  static const uint64_t SBOX4[256];
52 
53  secure_vector<uint64_t> m_X, m_digest;
54  const size_t m_hash_len, m_passes;
55  };
56 
57 }
58 
59 #endif
HashFunction * clone() const override
Definition: tiger.h:26
void clear() override
Definition: mdx_hash.cpp:41
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
virtual std::string name() const =0
virtual void compress_n(const uint8_t blocks[], size_t block_n)=0
virtual void copy_out(uint8_t buffer[])=0
Definition: alg_id.cpp:13
size_t output_length() const override
Definition: tiger.h:24
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
virtual size_t output_length() const =0