/*

* ARIA

* (C) 2017 Jack Lloyd

*

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

*

* This ARIA implementation is based on the 32-bit implementation by Aaram Yun from the

* National Security Research Institute, KOREA. Aaram Yun's implementation is based on

* the 8-bit implementation by Jin Hong. The source files are available in ARIA.zip from

* the Korea Internet & Security Agency website.

* <A HREF="https://tools.ietf.org/html/rfc5794">RFC 5794, A Description of the ARIA Encryption Algorithm</A>,

* <A HREF="http://seed.kisa.or.kr/iwt/ko/bbs/EgovReferenceList.do?bbsId=BBSMSTR_000000000002">Korea

* Internet & Security Agency homepage</A>

*/

#ifndef BOTAN_ARIA_H_

#define BOTAN_ARIA_H_

#include <botan/block_cipher.h>

namespace Botan {

/**

* ARIA-128

*/

class ARIA_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 "ARIA-128"; }

      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<ARIA_128>(); }

   private:

      void key_schedule(const uint8_t key[], size_t length) override;

      // Encryption and Decryption round keys.

      secure_vector<uint32_t> m_ERK, m_DRK;

   };

/**

* ARIA-192

*/

class ARIA_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 "ARIA-192"; }

      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<ARIA_192>(); }

   private:

      void key_schedule(const uint8_t key[], size_t length) override;

      // Encryption and Decryption round keys.

      secure_vector<uint32_t> m_ERK, m_DRK;

   };

/**

* ARIA-256

*/

class ARIA_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 "ARIA-256"; }

      std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<ARIA_256>(); }

   private:

      void key_schedule(const uint8_t key[], size_t length) override;

      // Encryption and Decryption round keys.

      secure_vector<uint32_t> m_ERK, m_DRK;

   };

}

#endif