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/*
* Tiger
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_TIGER_H__
#define BOTAN_TIGER_H__
#include <botan/mdx_hash.h>
namespace Botan {
/**
* Tiger
*/
class BOTAN_DLL Tiger : public MDx_HashFunction
{
public:
std::string name() const;
size_t output_length() const { return hash_len; }
HashFunction* clone() const
{
return new Tiger(output_length(), passes);
}
void clear();
/**
* @param out_size specifies the output length; can be 16, 20, or 24
* @param passes to make in the algorithm
*/
Tiger(size_t out_size = 24, size_t passes = 3);
private:
void compress_n(const byte[], size_t block);
void copy_out(byte[]);
static void pass(u64bit& A, u64bit& B, u64bit& C,
const secure_vector<u64bit>& M,
byte mul);
static const u64bit SBOX1[256];
static const u64bit SBOX2[256];
static const u64bit SBOX3[256];
static const u64bit SBOX4[256];
secure_vector<u64bit> X, digest;
const size_t hash_len, passes;
};
}
#endif
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