Botan  1.10.9
keccak.h
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1 /*
2 * Keccak
3 * (C) 2010 Jack Lloyd
4 *
5 * Distributed under the terms of the Botan license
6 */
7 
8 #ifndef BOTAN_KECCAK_H__
9 #define BOTAN_KECCAK_H__
10 
11 #include <botan/hash.h>
12 #include <botan/secmem.h>
13 #include <string>
14 
15 namespace Botan {
16 
17 /**
18 * Keccak[1600], a SHA-3 candidate
19 */
20 class BOTAN_DLL Keccak_1600 : public HashFunction
21  {
22  public:
23 
24  /**
25  * @param output_bits the size of the hash output; must be one of
26  * 224, 256, 384, or 512
27  */
28  Keccak_1600(size_t output_bits = 512);
29 
30  size_t hash_block_size() const { return bitrate / 8; }
31  size_t output_length() const { return output_bits / 8; }
32 
33  HashFunction* clone() const;
34  std::string name() const;
35  void clear();
36  private:
37  void add_data(const byte input[], size_t length);
38  void final_result(byte out[]);
39 
40  size_t output_bits, bitrate;
42  size_t S_pos;
43  };
44 
45 }
46 
47 #endif
size_t output_length() const
Definition: keccak.h:31
unsigned char byte
Definition: types.h:22
size_t hash_block_size() const
Definition: keccak.h:30