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/*
* SM4
* (C) 2017 Ribose Inc
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SM4_H_
#define BOTAN_SM4_H_
#include <botan/block_cipher.h>
BOTAN_FUTURE_INTERNAL_HEADER(sm4.h)
namespace Botan {
/**
* SM4
*/
class BOTAN_PUBLIC_API(2,2) SM4 final : public Block_Cipher_Fixed_Params<16, 16>
{
public:
void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
void clear() override;
std::string name() const override { return "SM4"; }
BlockCipher* clone() const override { return new SM4; }
std::string provider() const override;
size_t parallelism() const override;
private:
void key_schedule(const uint8_t[], size_t) override;
#if defined(BOTAN_HAS_SM4_ARMV8)
void sm4_armv8_encrypt(const uint8_t in[], uint8_t out[], size_t blocks) const;
void sm4_armv8_decrypt(const uint8_t in[], uint8_t out[], size_t blocks) const;
#endif
secure_vector<uint32_t> m_RK;
};
}
#endif
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