Botan  1.11.15
Public Types | Public Member Functions
Botan::AES_128_NI Class Reference

#include <aes_ni.h>

Inheritance diagram for Botan::AES_128_NI:
Botan::Block_Cipher_Fixed_Params< 16, 16 > Botan::BlockCipher Botan::SymmetricAlgorithm

List of all members.

Public Types

enum  
typedef SCAN_Name Spec

Public Member Functions

size_t block_size () const
void clear ()
BlockCipherclone () const
void decrypt (const byte in[], byte out[]) const
void decrypt (byte block[]) const
template<typename Alloc >
void decrypt (std::vector< byte, Alloc > &block) const
template<typename Alloc , typename Alloc2 >
void decrypt (const std::vector< byte, Alloc > &in, std::vector< byte, Alloc2 > &out) const
void decrypt_n (const byte in[], byte out[], size_t blocks) const
void encrypt (const byte in[], byte out[]) const
void encrypt (byte block[]) const
template<typename Alloc >
void encrypt (std::vector< byte, Alloc > &block) const
template<typename Alloc , typename Alloc2 >
void encrypt (const std::vector< byte, Alloc > &in, std::vector< byte, Alloc2 > &out) const
void encrypt_n (const byte in[], byte out[], size_t blocks) const
Key_Length_Specification key_spec () const
size_t maximum_keylength () const
size_t minimum_keylength () const
std::string name () const
size_t parallel_bytes () const
size_t parallelism () const
void set_key (const SymmetricKey &key)
template<typename Alloc >
void set_key (const std::vector< byte, Alloc > &key)
void set_key (const byte key[], size_t length)
bool valid_keylength (size_t length) const

Detailed Description

AES-128 using AES-NI

Definition at line 18 of file aes_ni.h.


Member Typedef Documentation

typedef SCAN_Name Botan::BlockCipher::Spec [inherited]

Definition at line 22 of file block_cipher.h.


Member Enumeration Documentation

anonymous enum [inherited]

Definition at line 153 of file block_cipher.h.

{ BLOCK_SIZE = BS };

Member Function Documentation

size_t Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::block_size ( ) const [inline, virtual, inherited]
Returns:
block size of this algorithm

Implements Botan::BlockCipher.

Definition at line 154 of file block_cipher.h.

{ return BS; }
void Botan::AES_128_NI::clear ( ) [virtual]

Implements Botan::SymmetricAlgorithm.

Definition at line 315 of file aes_ni.cpp.

References Botan::zap().

   {
   zap(EK);
   zap(DK);
   }
BlockCipher* Botan::AES_128_NI::clone ( ) const [inline, virtual]
Returns:
new object representing the same algorithm as *this

Implements Botan::BlockCipher.

Definition at line 28 of file aes_ni.h.

{ return new AES_128_NI; }
void Botan::BlockCipher::decrypt ( const byte  in[],
byte  out[] 
) const [inline, inherited]

Decrypt a block.

Parameters:
inThe ciphertext block to be decypted as a byte array. Must be of length block_size().
outThe byte array designated to hold the decrypted block. Must be of length block_size().

Definition at line 59 of file block_cipher.h.

Referenced by Botan::Camellia_128::decrypt_n(), Botan::DESX::decrypt_n(), Botan::Camellia_192::decrypt_n(), Botan::Camellia_256::decrypt_n(), Botan::XTS_Decryption::finish(), and Botan::CTS_Decryption::finish().

         { decrypt_n(in, out, 1); }
void Botan::BlockCipher::decrypt ( byte  block[]) const [inline, inherited]

Decrypt a block.

Parameters:
blockthe ciphertext block to be decrypted Must be of length block_size(). Will hold the result when the function has finished.

Definition at line 76 of file block_cipher.h.

{ decrypt_n(block, block, 1); }
template<typename Alloc >
void Botan::BlockCipher::decrypt ( std::vector< byte, Alloc > &  block) const [inline, inherited]

Decrypt one or more blocks

Parameters:
blockthe input/output buffer (multiple of block_size())

Definition at line 93 of file block_cipher.h.

         {
         return decrypt_n(&block[0], &block[0], block.size() / block_size());
         }
template<typename Alloc , typename Alloc2 >
void Botan::BlockCipher::decrypt ( const std::vector< byte, Alloc > &  in,
std::vector< byte, Alloc2 > &  out 
) const [inline, inherited]

Decrypt one or more blocks

Parameters:
inthe input buffer (multiple of block_size())
outthe output buffer (same size as in)

Definition at line 116 of file block_cipher.h.

         {
         return decrypt_n(&in[0], &out[0], in.size() / block_size());
         }
void Botan::AES_128_NI::decrypt_n ( const byte  in[],
byte  out[],
size_t  blocks 
) const [virtual]

Decrypt one or more blocks

Parameters:
inthe input buffer (multiple of block_size())
outthe output buffer (same size as in)
blocksthe number of blocks to process

Implements Botan::BlockCipher.

Definition at line 187 of file aes_ni.cpp.

References AES_DEC_4_LAST_ROUNDS, and AES_DEC_4_ROUNDS.

   {
   const __m128i* in_mm = reinterpret_cast<const __m128i*>(in);
   __m128i* out_mm = reinterpret_cast<__m128i*>(out);

   const __m128i* key_mm = reinterpret_cast<const __m128i*>(&DK[0]);

   __m128i K0  = _mm_loadu_si128(key_mm);
   __m128i K1  = _mm_loadu_si128(key_mm + 1);
   __m128i K2  = _mm_loadu_si128(key_mm + 2);
   __m128i K3  = _mm_loadu_si128(key_mm + 3);
   __m128i K4  = _mm_loadu_si128(key_mm + 4);
   __m128i K5  = _mm_loadu_si128(key_mm + 5);
   __m128i K6  = _mm_loadu_si128(key_mm + 6);
   __m128i K7  = _mm_loadu_si128(key_mm + 7);
   __m128i K8  = _mm_loadu_si128(key_mm + 8);
   __m128i K9  = _mm_loadu_si128(key_mm + 9);
   __m128i K10 = _mm_loadu_si128(key_mm + 10);

   while(blocks >= 4)
      {
      __m128i B0 = _mm_loadu_si128(in_mm + 0);
      __m128i B1 = _mm_loadu_si128(in_mm + 1);
      __m128i B2 = _mm_loadu_si128(in_mm + 2);
      __m128i B3 = _mm_loadu_si128(in_mm + 3);

      B0 = _mm_xor_si128(B0, K0);
      B1 = _mm_xor_si128(B1, K0);
      B2 = _mm_xor_si128(B2, K0);
      B3 = _mm_xor_si128(B3, K0);

      AES_DEC_4_ROUNDS(K1);
      AES_DEC_4_ROUNDS(K2);
      AES_DEC_4_ROUNDS(K3);
      AES_DEC_4_ROUNDS(K4);
      AES_DEC_4_ROUNDS(K5);
      AES_DEC_4_ROUNDS(K6);
      AES_DEC_4_ROUNDS(K7);
      AES_DEC_4_ROUNDS(K8);
      AES_DEC_4_ROUNDS(K9);
      AES_DEC_4_LAST_ROUNDS(K10);

      _mm_storeu_si128(out_mm + 0, B0);
      _mm_storeu_si128(out_mm + 1, B1);
      _mm_storeu_si128(out_mm + 2, B2);
      _mm_storeu_si128(out_mm + 3, B3);

      blocks -= 4;
      in_mm += 4;
      out_mm += 4;
      }

   for(size_t i = 0; i != blocks; ++i)
      {
      __m128i B = _mm_loadu_si128(in_mm + i);

      B = _mm_xor_si128(B, K0);

      B = _mm_aesdec_si128(B, K1);
      B = _mm_aesdec_si128(B, K2);
      B = _mm_aesdec_si128(B, K3);
      B = _mm_aesdec_si128(B, K4);
      B = _mm_aesdec_si128(B, K5);
      B = _mm_aesdec_si128(B, K6);
      B = _mm_aesdec_si128(B, K7);
      B = _mm_aesdec_si128(B, K8);
      B = _mm_aesdec_si128(B, K9);
      B = _mm_aesdeclast_si128(B, K10);

      _mm_storeu_si128(out_mm + i, B);
      }
   }
void Botan::BlockCipher::encrypt ( const byte  in[],
byte  out[] 
) const [inline, inherited]

Encrypt a block.

Parameters:
inThe plaintext block to be encrypted as a byte array. Must be of length block_size().
outThe byte array designated to hold the encrypted block. Must be of length block_size().

Definition at line 49 of file block_cipher.h.

Referenced by Botan::aont_package(), Botan::aont_unpackage(), Botan::DESX::encrypt_n(), Botan::Camellia_128::encrypt_n(), Botan::Camellia_192::encrypt_n(), Botan::Camellia_256::encrypt_n(), Botan::XTS_Encryption::finish(), Botan::CTS_Encryption::finish(), Botan::CBC_Encryption::update(), Botan::CFB_Encryption::update(), and Botan::CFB_Decryption::update().

         { encrypt_n(in, out, 1); }
void Botan::BlockCipher::encrypt ( byte  block[]) const [inline, inherited]

Encrypt a block.

Parameters:
blockthe plaintext block to be encrypted Must be of length block_size(). Will hold the result when the function has finished.

Definition at line 68 of file block_cipher.h.

{ encrypt_n(block, block, 1); }
template<typename Alloc >
void Botan::BlockCipher::encrypt ( std::vector< byte, Alloc > &  block) const [inline, inherited]

Encrypt one or more blocks

Parameters:
blockthe input/output buffer (multiple of block_size())

Definition at line 83 of file block_cipher.h.

         {
         return encrypt_n(&block[0], &block[0], block.size() / block_size());
         }
template<typename Alloc , typename Alloc2 >
void Botan::BlockCipher::encrypt ( const std::vector< byte, Alloc > &  in,
std::vector< byte, Alloc2 > &  out 
) const [inline, inherited]

Encrypt one or more blocks

Parameters:
inthe input buffer (multiple of block_size())
outthe output buffer (same size as in)

Definition at line 104 of file block_cipher.h.

         {
         return encrypt_n(&in[0], &out[0], in.size() / block_size());
         }
void Botan::AES_128_NI::encrypt_n ( const byte  in[],
byte  out[],
size_t  blocks 
) const [virtual]

Encrypt one or more blocks

Parameters:
inthe input buffer (multiple of block_size())
outthe output buffer (same size as in)
blocksthe number of blocks to process

Implements Botan::BlockCipher.

Definition at line 111 of file aes_ni.cpp.

References AES_ENC_4_LAST_ROUNDS, and AES_ENC_4_ROUNDS.

   {
   const __m128i* in_mm = reinterpret_cast<const __m128i*>(in);
   __m128i* out_mm = reinterpret_cast<__m128i*>(out);

   const __m128i* key_mm = reinterpret_cast<const __m128i*>(&EK[0]);

   __m128i K0  = _mm_loadu_si128(key_mm);
   __m128i K1  = _mm_loadu_si128(key_mm + 1);
   __m128i K2  = _mm_loadu_si128(key_mm + 2);
   __m128i K3  = _mm_loadu_si128(key_mm + 3);
   __m128i K4  = _mm_loadu_si128(key_mm + 4);
   __m128i K5  = _mm_loadu_si128(key_mm + 5);
   __m128i K6  = _mm_loadu_si128(key_mm + 6);
   __m128i K7  = _mm_loadu_si128(key_mm + 7);
   __m128i K8  = _mm_loadu_si128(key_mm + 8);
   __m128i K9  = _mm_loadu_si128(key_mm + 9);
   __m128i K10 = _mm_loadu_si128(key_mm + 10);

   while(blocks >= 4)
      {
      __m128i B0 = _mm_loadu_si128(in_mm + 0);
      __m128i B1 = _mm_loadu_si128(in_mm + 1);
      __m128i B2 = _mm_loadu_si128(in_mm + 2);
      __m128i B3 = _mm_loadu_si128(in_mm + 3);

      B0 = _mm_xor_si128(B0, K0);
      B1 = _mm_xor_si128(B1, K0);
      B2 = _mm_xor_si128(B2, K0);
      B3 = _mm_xor_si128(B3, K0);

      AES_ENC_4_ROUNDS(K1);
      AES_ENC_4_ROUNDS(K2);
      AES_ENC_4_ROUNDS(K3);
      AES_ENC_4_ROUNDS(K4);
      AES_ENC_4_ROUNDS(K5);
      AES_ENC_4_ROUNDS(K6);
      AES_ENC_4_ROUNDS(K7);
      AES_ENC_4_ROUNDS(K8);
      AES_ENC_4_ROUNDS(K9);
      AES_ENC_4_LAST_ROUNDS(K10);

      _mm_storeu_si128(out_mm + 0, B0);
      _mm_storeu_si128(out_mm + 1, B1);
      _mm_storeu_si128(out_mm + 2, B2);
      _mm_storeu_si128(out_mm + 3, B3);

      blocks -= 4;
      in_mm += 4;
      out_mm += 4;
      }

   for(size_t i = 0; i != blocks; ++i)
      {
      __m128i B = _mm_loadu_si128(in_mm + i);

      B = _mm_xor_si128(B, K0);

      B = _mm_aesenc_si128(B, K1);
      B = _mm_aesenc_si128(B, K2);
      B = _mm_aesenc_si128(B, K3);
      B = _mm_aesenc_si128(B, K4);
      B = _mm_aesenc_si128(B, K5);
      B = _mm_aesenc_si128(B, K6);
      B = _mm_aesenc_si128(B, K7);
      B = _mm_aesenc_si128(B, K8);
      B = _mm_aesenc_si128(B, K9);
      B = _mm_aesenclast_si128(B, K10);

      _mm_storeu_si128(out_mm + i, B);
      }
   }
Key_Length_Specification Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::key_spec ( ) const [inline, virtual, inherited]
Returns:
object describing limits on key size

Implements Botan::SymmetricAlgorithm.

Definition at line 156 of file block_cipher.h.

         {
         return Key_Length_Specification(KMIN, KMAX, KMOD);
         }
size_t Botan::SymmetricAlgorithm::maximum_keylength ( ) const [inline, inherited]
Returns:
minimum allowed key length

Definition at line 36 of file sym_algo.h.

References Botan::Key_Length_Specification::maximum_keylength().

         {
         return key_spec().maximum_keylength();
         }
size_t Botan::SymmetricAlgorithm::minimum_keylength ( ) const [inline, inherited]
Returns:
maxmium allowed key length

Definition at line 44 of file sym_algo.h.

         {
         return key_spec().minimum_keylength();
         }
std::string Botan::AES_128_NI::name ( ) const [inline, virtual]

Implements Botan::SymmetricAlgorithm.

Definition at line 27 of file aes_ni.h.

{ return "AES-128"; }
size_t Botan::BlockCipher::parallel_bytes ( ) const [inline, inherited]
Returns:
prefererred parallelism of this cipher in bytes

Definition at line 37 of file block_cipher.h.

Referenced by Botan::XTS_Mode::update_granularity(), Botan::ECB_Mode::update_granularity(), and Botan::CBC_Mode::update_granularity().

         {
         return parallelism() * block_size() * BOTAN_BLOCK_CIPHER_PAR_MULT;
         }
size_t Botan::AES_128_NI::parallelism ( ) const [inline, virtual]
Returns:
native parallelism of this cipher in blocks

Reimplemented from Botan::BlockCipher.

Definition at line 21 of file aes_ni.h.

{ return 4; }
void Botan::SymmetricAlgorithm::set_key ( const SymmetricKey key) [inline, inherited]

Set the symmetric key of this object.

Parameters:
keythe SymmetricKey to be set.

Definition at line 63 of file sym_algo.h.

References Botan::OctetString::begin(), and Botan::OctetString::length().

Referenced by Botan::aont_package(), Botan::aont_unpackage(), botan_mac_set_key(), Botan::TLS::Session::decrypt(), Botan::TLS::Session::encrypt(), and Botan::pbkdf2().

         {
         set_key(key.begin(), key.length());
         }
template<typename Alloc >
void Botan::SymmetricAlgorithm::set_key ( const std::vector< byte, Alloc > &  key) [inline, inherited]

Definition at line 69 of file sym_algo.h.

         {
         set_key(&key[0], key.size());
         }
void Botan::SymmetricAlgorithm::set_key ( const byte  key[],
size_t  length 
) [inline, inherited]

Set the symmetric key of this object.

Parameters:
keythe to be set as a byte array.
lengthin bytes of key param

Definition at line 79 of file sym_algo.h.

         {
         if(!valid_keylength(length))
            throw Invalid_Key_Length(name(), length);
         key_schedule(key, length);
         }
bool Botan::SymmetricAlgorithm::valid_keylength ( size_t  length) const [inline, inherited]

Check whether a given key length is valid for this algorithm.

Parameters:
lengththe key length to be checked.
Returns:
true if the key length is valid.

Definition at line 54 of file sym_algo.h.

Referenced by Botan::aont_package(), and Botan::aont_unpackage().

         {
         return key_spec().valid_keylength(length);
         }

The documentation for this class was generated from the following files: