Botan  1.10.9
tiger.h
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1 /*
2 * Tiger
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Distributed under the terms of the Botan license
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_DLL Tiger : public MDx_HashFunction
19  {
20  public:
21  std::string name() const;
22  size_t output_length() const { return hash_len; }
23 
25  {
26  return new Tiger(output_length(), passes);
27  }
28 
29  void clear();
30 
31  /**
32  * @param out_size specifies the output length; can be 16, 20, or 24
33  * @param passes to make in the algorithm
34  */
35  Tiger(size_t out_size = 24, size_t passes = 3);
36  private:
37  void compress_n(const byte[], size_t block);
38  void copy_out(byte[]);
39 
40  static void pass(u64bit& A, u64bit& B, u64bit& C,
41  const MemoryRegion<u64bit>& M,
42  byte mul);
43 
44  static const u64bit SBOX1[256];
45  static const u64bit SBOX2[256];
46  static const u64bit SBOX3[256];
47  static const u64bit SBOX4[256];
48 
49  SecureVector<u64bit> X, digest;
50  const size_t hash_len, passes;
51  };
52 
53 }
54 
55 #endif
size_t output_length() const
Definition: tiger.h:22
unsigned char byte
Definition: types.h:22
unsigned long long u64bit
Definition: types.h:49
HashFunction * clone() const
Definition: tiger.h:24