Add ARIA Block Cipher (GH #1004)

1 files changed, 88 insertions, 0 deletions

diff --git a/src/lib/block/aria/aria.h b/src/lib/block/aria/aria.h
new file mode 100644
index 000000000..cc1716c15
--- /dev/null
+++ b/src/lib/block/aria/aria.h
@@ -0,0 +1,88 @@
+/*
+* 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="http://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 BOTAN_DLL 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"; }
+      BlockCipher* clone() const override { return new ARIA_128; }
+   private:
+      void key_schedule(const uint8_t key[], size_t length) override;
+
+      // Encryption and Decryption round keys. The ref impl allocates 17 subkeys.
+      secure_vector<uint8_t> m_ERK, m_DRK;
+      // Workspace. Key Schedule and Transform use it.
+      mutable secure_vector<uint32_t> m_WS;
+   };
+
+/**
+* ARIA-192
+*/
+class BOTAN_DLL 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"; }
+      BlockCipher* clone() const override { return new ARIA_192; }
+   private:
+      void key_schedule(const uint8_t key[], size_t length) override;
+
+      // Encryption and Decryption round keys. The ref impl allocates 17 subkeys.
+      secure_vector<uint8_t> m_ERK, m_DRK;
+      // Workspace. Key Schedule and Transform use it.
+      mutable secure_vector<uint32_t> m_WS;
+   };
+
+/**
+* ARIA-256
+*/
+class BOTAN_DLL 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"; }
+      BlockCipher* clone() const override { return new ARIA_256; }
+   private:
+      void key_schedule(const uint8_t key[], size_t length) override;
+
+      // Encryption and Decryption round keys. The ref impl allocates 17 subkeys.
+      secure_vector<uint8_t> m_ERK, m_DRK;
+      // Workspace. Key Schedule and Transform use it.
+      mutable secure_vector<uint32_t> m_WS;
+   };
+
+}
+
+#endif