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/*
* SM3
* (C) 2017 Ribose Inc.
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SM3_H__
#define BOTAN_SM3_H__
#include <botan/mdx_hash.h>
namespace Botan {
enum {
SM3_BLOCK_BYTES = 64,
SM3_DIGEST_BYTES = 32
};
/**
* SM3
*/
class BOTAN_DLL SM3 final : public MDx_HashFunction
{
public:
std::string name() const override { return "SM3"; }
size_t output_length() const override { return SM3_DIGEST_BYTES; }
HashFunction* clone() const override { return new SM3; }
void clear() override;
SM3() : MDx_HashFunction(SM3_BLOCK_BYTES, true, true), m_M(16), m_digest(SM3_DIGEST_BYTES)
{ clear(); }
protected:
void compress_n(const uint8_t[], size_t blocks) override;
void copy_out(uint8_t[]) override;
private:
/**
* The message buffer
*/
secure_vector<uint32_t> m_M;
/**
* The digest value
*/
secure_vector<uint32_t> m_digest;
};
}
#endif
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