camellia.h

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/*
* Camellia
* (C) 2012 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
 
#ifndef BOTAN_CAMELLIA_H_
#define BOTAN_CAMELLIA_H_
 
#include <botan/block_cipher.h>
#include <botan/secmem.h>
 
namespace Botan {
 
/**
* Camellia-128
*/
class Camellia_128 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 "Camellia-128"; }
 
      std::string provider() const override;
      size_t parallelism() const override;
 
      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<Camellia_128>(); }
 
      bool has_keying_material() const override;
 
   private:
      void key_schedule(std::span<const uint8_t> key) override;
 
#if defined(BOTAN_HAS_CAMELLIA_AVX2_GFNI)
      static void avx2_gfni_encrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
      static void avx2_gfni_decrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
#endif
 
#if defined(BOTAN_HAS_CAMELLIA_AVX512_GFNI)
      static void avx512_gfni_encrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
      static void avx512_gfni_decrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
#endif
 
      secure_vector<uint64_t> m_SK;
};
 
/**
* Camellia-192
*/
class Camellia_192 final : public Block_Cipher_Fixed_Params<16, 24> {
   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 "Camellia-192"; }
 
      std::string provider() const override;
      size_t parallelism() const override;
 
      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<Camellia_192>(); }
 
      bool has_keying_material() const override;
 
   private:
      void key_schedule(std::span<const uint8_t> key) override;
 
#if defined(BOTAN_HAS_CAMELLIA_AVX2_GFNI)
      static void avx2_gfni_encrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
      static void avx2_gfni_decrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
#endif
 
#if defined(BOTAN_HAS_CAMELLIA_AVX512_GFNI)
      static void avx512_gfni_encrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
      static void avx512_gfni_decrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
#endif
 
      secure_vector<uint64_t> m_SK;
};
 
/**
* Camellia-256
*/
class Camellia_256 final : public Block_Cipher_Fixed_Params<16, 32> {
   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 "Camellia-256"; }
 
      std::string provider() const override;
      size_t parallelism() const override;
 
      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<Camellia_256>(); }
 
      bool has_keying_material() const override;
 
   private:
      void key_schedule(std::span<const uint8_t> key) override;
 
#if defined(BOTAN_HAS_CAMELLIA_AVX2_GFNI)
      static void avx2_gfni_encrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
      static void avx2_gfni_decrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
#endif
 
#if defined(BOTAN_HAS_CAMELLIA_AVX512_GFNI)
      static void avx512_gfni_encrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
      static void avx512_gfni_decrypt(const uint8_t in[], uint8_t out[], size_t blocks, std::span<const uint64_t> SK);
#endif
 
      secure_vector<uint64_t> m_SK;
};
 
}  // namespace Botan
 
#endif