/*

* SHACAL-2

* (C) 2017 Jack Lloyd

*

* Botan is released under the Simplified BSD License (see license.txt)

*/

#ifndef BOTAN_SHACAL2_H_

#define BOTAN_SHACAL2_H_

#include <botan/block_cipher.h>

#include <botan/secmem.h>

namespace Botan {

/**

* SHACAL2

*/

class SHACAL2 final : public Block_Cipher_Fixed_Params<32, 16, 64, 4> {

   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;

      std::string provider() const override;

      void clear() override;

      std::string name() const override { return "SHACAL2"; }

      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<SHACAL2>(); }

      size_t parallelism() const override;

      bool has_keying_material() const override;

   private:

      void key_schedule(std::span<const uint8_t> key) override;

#if defined(BOTAN_HAS_SHACAL2_SIMD)

      void simd_encrypt_4(const uint8_t in[], uint8_t out[]) const;

      void simd_decrypt_4(const uint8_t in[], uint8_t out[]) const;

#endif

#if defined(BOTAN_HAS_SHACAL2_AVX2)

      void avx2_encrypt_8(const uint8_t in[], uint8_t out[]) const;

      void avx2_decrypt_8(const uint8_t in[], uint8_t out[]) const;

#endif

#if defined(BOTAN_HAS_SHACAL2_X86)

      void x86_encrypt_blocks(const uint8_t in[], uint8_t out[], size_t blocks) const;

#endif

#if defined(BOTAN_HAS_SHACAL2_ARMV8)

      void armv8_encrypt_blocks(const uint8_t in[], uint8_t out[], size_t blocks) const;

#endif

      secure_vector<uint32_t> m_RK;

};

}  // namespace Botan

#endif