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-rw-r--r--cxx/include/aesnixx/aes.hpp467
-rw-r--r--cxx/include/aesnixx/mode.hpp15
2 files changed, 482 insertions, 0 deletions
diff --git a/cxx/include/aesnixx/aes.hpp b/cxx/include/aesnixx/aes.hpp
index 55dfa0e..1273c56 100644
--- a/cxx/include/aesnixx/aes.hpp
+++ b/cxx/include/aesnixx/aes.hpp
@@ -6,7 +6,9 @@
* See LICENSE.txt for details.
*/
+#include "algorithm.hpp"
#include "data.hpp"
+#include "mode.hpp"
#include <aesni/all.h>
@@ -128,5 +130,470 @@ namespace aesni
{
return sizeof(round_keys) / sizeof(Block128);
}
+
+ inline void expand_key(
+ const Key128& key,
+ RoundKeys128& encryption_keys)
+ {
+ aesni_aes128_expand_key(&key, &encryption_keys);
+ }
+
+ inline void expand_key(
+ const Key192& key,
+ RoundKeys192& encryption_keys)
+ {
+ aesni_aes192_expand_key(&key, &encryption_keys);
+ }
+
+ inline void expand_key(
+ const Key256& key,
+ RoundKeys256& encryption_keys)
+ {
+ aesni_aes256_expand_key(&key, &encryption_keys);
+ }
+
+ inline void derive_decryption_keys(
+ const RoundKeys128& encryption_keys,
+ RoundKeys128& decryption_keys)
+ {
+ aesni_aes128_derive_decryption_keys(
+ &encryption_keys, &decryption_keys);
+ }
+
+ inline void derive_decryption_keys(
+ const RoundKeys192& encryption_keys,
+ RoundKeys192& decryption_keys)
+ {
+ aesni_aes192_derive_decryption_keys(
+ &encryption_keys, &decryption_keys);
+ }
+
+ inline void derive_decryption_keys(
+ const RoundKeys256& encryption_keys,
+ RoundKeys256& decryption_keys)
+ {
+ aesni_aes256_derive_decryption_keys(
+ &encryption_keys, &decryption_keys);
+ }
+
+ inline Block encrypt_ecb(
+ const Block& plaintext,
+ const RoundKeys128& encryption_keys)
+ {
+ return aesni_aes128_encrypt_block_ecb(plaintext, &encryption_keys);
+ }
+
+ inline Block decrypt_ecb(
+ const Block& ciphertext,
+ const RoundKeys128& decryption_keys)
+ {
+ return aesni_aes128_decrypt_block_ecb(ciphertext, &decryption_keys);
+ }
+
+ inline Block encrypt_cbc(
+ const Block& plaintext,
+ const RoundKeys128& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_encrypt_block_cbc(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_cbc(
+ const Block& ciphertext,
+ const RoundKeys128& decryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_decrypt_block_cbc(ciphertext, &decryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_cfb(
+ const Block& plaintext,
+ const RoundKeys128& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_encrypt_block_cfb(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_cfb(
+ const Block& ciphertext,
+ const RoundKeys128& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_decrypt_block_cfb(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ofb(
+ const Block& plaintext,
+ const RoundKeys128& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_encrypt_block_ofb(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_ofb(
+ const Block& ciphertext,
+ const RoundKeys128& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_decrypt_block_ofb(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ctr(
+ const Block& plaintext,
+ const RoundKeys128& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_encrypt_block_ctr(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_ctr(
+ const Block& ciphertext,
+ const RoundKeys128& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes128_decrypt_block_ctr(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ecb(
+ const Block& plaintext,
+ const RoundKeys192& encryption_keys)
+ {
+ return aesni_aes192_encrypt_block_ecb(plaintext, &encryption_keys);
+ }
+
+ inline Block decrypt_ecb(
+ const Block& ciphertext,
+ const RoundKeys192& decryption_keys)
+ {
+ return aesni_aes192_decrypt_block_ecb(ciphertext, &decryption_keys);
+ }
+
+ inline Block encrypt_cbc(
+ const Block& plaintext,
+ const RoundKeys192& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_encrypt_block_cbc(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_cbc(
+ const Block& ciphertext,
+ const RoundKeys192& decryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_decrypt_block_cbc(ciphertext, &decryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_cfb(
+ const Block& plaintext,
+ const RoundKeys192& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_encrypt_block_cfb(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_cfb(
+ const Block& ciphertext,
+ const RoundKeys192& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_decrypt_block_cfb(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ofb(
+ const Block& plaintext,
+ const RoundKeys192& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_encrypt_block_ofb(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_ofb(
+ const Block& ciphertext,
+ const RoundKeys192& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_decrypt_block_ofb(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ctr(
+ const Block& plaintext,
+ const RoundKeys192& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_encrypt_block_ctr(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_ctr(
+ const Block& ciphertext,
+ const RoundKeys192& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes192_decrypt_block_ctr(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ecb(
+ const Block& plaintext,
+ const RoundKeys256& encryption_keys)
+ {
+ return aesni_aes256_encrypt_block_ecb(plaintext, &encryption_keys);
+ }
+
+ inline Block decrypt_ecb(
+ const Block& ciphertext,
+ const RoundKeys256& decryption_keys)
+ {
+ return aesni_aes256_decrypt_block_ecb(ciphertext, &decryption_keys);
+ }
+
+ inline Block encrypt_cbc(
+ const Block& plaintext,
+ const RoundKeys256& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_encrypt_block_cbc(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_cbc(
+ const Block& ciphertext,
+ const RoundKeys256& decryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_decrypt_block_cbc(ciphertext, &decryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_cfb(
+ const Block& plaintext,
+ const RoundKeys256& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_encrypt_block_cfb(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_cfb(
+ const Block& ciphertext,
+ const RoundKeys256& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_decrypt_block_cfb(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ofb(
+ const Block& plaintext,
+ const RoundKeys256& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_encrypt_block_ofb(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_ofb(
+ const Block& ciphertext,
+ const RoundKeys256& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_decrypt_block_ofb(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block encrypt_ctr(
+ const Block& plaintext,
+ const RoundKeys256& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_encrypt_block_ctr(plaintext, &encryption_keys, iv, &next_iv);
+ }
+
+ inline Block decrypt_ctr(
+ const Block& ciphertext,
+ const RoundKeys256& encryption_keys,
+ const Block& iv,
+ Block& next_iv)
+ {
+ return aesni_aes256_decrypt_block_ctr(ciphertext, &encryption_keys, iv, &next_iv);
+ }
+
+ template <Algorithm>
+ struct Types;
+
+ template <>
+ struct Types<AESNI_AES128>
+ {
+ typedef aesni::aes::Block BlockT;
+ typedef aesni::aes::Key128 KeyT;
+ typedef aesni::aes::RoundKeys128 RoundKeysT;
+ };
+
+ template <>
+ struct Types<AESNI_AES192>
+ {
+ typedef aesni::aes::Block BlockT;
+ typedef aesni::aes::Key192 KeyT;
+ typedef aesni::aes::RoundKeys192 RoundKeysT;
+ };
+
+ template <>
+ struct Types<AESNI_AES256>
+ {
+ typedef aesni::aes::Block BlockT;
+ typedef aesni::aes::Key256 KeyT;
+ typedef aesni::aes::RoundKeys256 RoundKeysT;
+ };
+
+ template <Algorithm algorithm, Mode mode>
+ class Encrypt;
+
+ template <Algorithm algorithm>
+ class Encrypt<algorithm, AESNI_ECB>
+ {
+ public:
+ Encrypt(const typename Types<algorithm>::KeyT& key,
+ const typename Types<algorithm>::BlockT& iv)
+ {
+ expand_key(key, m_encryption_keys);
+ derive_decryption_keys(m_encryption_keys, m_decryption_keys);
+ }
+
+ inline typename Types<algorithm>::BlockT encrypt(const typename Types<algorithm>::BlockT& plaintext)
+ {
+ return encrypt_ecb(plaintext, m_encryption_keys);
+ }
+
+ inline typename Types<algorithm>::BlockT decrypt(const typename Types<algorithm>::BlockT& ciphertext)
+ {
+ return decrypt_ecb(ciphertext, m_decryption_keys);
+ }
+
+ private:
+ typename Types<algorithm>::RoundKeysT m_encryption_keys;
+ typename Types<algorithm>::RoundKeysT m_decryption_keys;
+ };
+
+ template <Algorithm algorithm>
+ class Encrypt<algorithm, AESNI_CBC>
+ {
+ public:
+ Encrypt(const typename Types<algorithm>::KeyT& key,
+ const typename Types<algorithm>::BlockT& iv)
+ : m_iv(iv)
+ {
+ expand_key(key, m_encryption_keys);
+ derive_decryption_keys(m_encryption_keys, m_decryption_keys);
+ }
+
+ inline typename Types<algorithm>::BlockT encrypt(const typename Types<algorithm>::BlockT& plaintext)
+ {
+ return encrypt_cbc(plaintext, m_encryption_keys, m_iv, m_iv);
+ }
+
+ inline typename Types<algorithm>::BlockT decrypt(const typename Types<algorithm>::BlockT& ciphertext)
+ {
+ return decrypt_cbc(ciphertext, m_decryption_keys, m_iv, m_iv);
+ }
+
+ private:
+ typename Types<algorithm>::BlockT m_iv;
+ typename Types<algorithm>::RoundKeysT m_encryption_keys;
+ typename Types<algorithm>::RoundKeysT m_decryption_keys;
+ };
+
+ template <Algorithm algorithm>
+ class Encrypt<algorithm, AESNI_CFB>
+ {
+ public:
+ Encrypt(const typename Types<algorithm>::KeyT& key,
+ const typename Types<algorithm>::BlockT& iv)
+ : m_iv(iv)
+ {
+ expand_key(key, m_encryption_keys);
+ }
+
+ inline typename Types<algorithm>::BlockT encrypt(const typename Types<algorithm>::BlockT& plaintext)
+ {
+ return encrypt_cfb(plaintext, m_encryption_keys, m_iv, m_iv);
+ }
+
+ inline typename Types<algorithm>::BlockT decrypt(const typename Types<algorithm>::BlockT& ciphertext)
+ {
+ return decrypt_cfb(ciphertext, m_encryption_keys, m_iv, m_iv);
+ }
+
+ private:
+ typename Types<algorithm>::BlockT m_iv;
+ typename Types<algorithm>::RoundKeysT m_encryption_keys;
+ };
+
+ template <Algorithm algorithm>
+ class Encrypt<algorithm, AESNI_OFB>
+ {
+ public:
+ Encrypt(const typename Types<algorithm>::KeyT& key,
+ const typename Types<algorithm>::BlockT& iv)
+ : m_iv(iv)
+ {
+ expand_key(key, m_encryption_keys);
+ }
+
+ inline typename Types<algorithm>::BlockT encrypt(const typename Types<algorithm>::BlockT& plaintext)
+ {
+ return encrypt_ofb(plaintext, m_encryption_keys, m_iv, m_iv);
+ }
+
+ inline typename Types<algorithm>::BlockT decrypt(const typename Types<algorithm>::BlockT& ciphertext)
+ {
+ return decrypt_ofb(ciphertext, m_encryption_keys, m_iv, m_iv);
+ }
+
+ private:
+ typename Types<algorithm>::BlockT m_iv;
+ typename Types<algorithm>::RoundKeysT m_encryption_keys;
+ };
+
+ template <Algorithm algorithm>
+ class Encrypt<algorithm, AESNI_CTR>
+ {
+ public:
+ Encrypt(const typename Types<algorithm>::KeyT& key,
+ const typename Types<algorithm>::BlockT& iv)
+ : m_iv(iv)
+ {
+ expand_key(key, m_encryption_keys);
+ }
+
+ inline typename Types<algorithm>::BlockT encrypt(const typename Types<algorithm>::BlockT& plaintext)
+ {
+ return encrypt_ctr(plaintext, m_encryption_keys, m_iv, m_iv);
+ }
+
+ inline typename Types<algorithm>::BlockT decrypt(const typename Types<algorithm>::BlockT& ciphertext)
+ {
+ return decrypt_ctr(ciphertext, m_encryption_keys, m_iv, m_iv);
+ }
+
+ private:
+ typename Types<algorithm>::RoundKeysT m_encryption_keys;
+ typename Types<algorithm>::BlockT m_iv;
+ };
}
}
diff --git a/cxx/include/aesnixx/mode.hpp b/cxx/include/aesnixx/mode.hpp
index ec26170..9bcbbd5 100644
--- a/cxx/include/aesnixx/mode.hpp
+++ b/cxx/include/aesnixx/mode.hpp
@@ -10,7 +10,22 @@
#include <aesni/all.h>
+#include <type_traits>
+
namespace aesni
{
typedef AesNI_Mode Mode;
+
+ template <Mode mode>
+ struct ModeRequiresInitializationVector : public std::true_type
+ { };
+
+ template <>
+ struct ModeRequiresInitializationVector<AESNI_ECB> : public std::false_type
+ { };
+
+ inline bool mode_requires_initialization_vector(Mode mode)
+ {
+ return mode != AESNI_ECB;
+ }
}
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