Botan  1.11.15
Public Types | Public Member Functions | Protected Member Functions | Static Protected Attributes
Botan::Noekeon_SIMD Class Reference

#include <noekeon_simd.h>

Inheritance diagram for Botan::Noekeon_SIMD:
Botan::Noekeon 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

Protected Member Functions

const secure_vector< u32bit > & get_DK () const
const secure_vector< u32bit > & get_EK () const

Static Protected Attributes

static const byte RC [17]

Detailed Description

Noekeon implementation using SIMD operations

Definition at line 18 of file noekeon_simd.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::Noekeon::clear ( ) [virtual, inherited]

Implements Botan::SymmetricAlgorithm.

Definition at line 207 of file noekeon.cpp.

References Botan::zap().

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

Reimplemented from Botan::Noekeon.

Definition at line 26 of file noekeon_simd.h.

{ return new Noekeon_SIMD; }
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::Noekeon_SIMD::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

Reimplemented from Botan::Noekeon.

Definition at line 126 of file noekeon_simd.cpp.

References Botan::Noekeon::get_DK(), Botan::load_be(), NOK_SIMD_GAMMA, NOK_SIMD_THETA, and Botan::Noekeon::RC.

   {
   const secure_vector<u32bit>& DK = this->get_DK();

   SIMD_32 K0 = SIMD_32(DK[0]);
   SIMD_32 K1 = SIMD_32(DK[1]);
   SIMD_32 K2 = SIMD_32(DK[2]);
   SIMD_32 K3 = SIMD_32(DK[3]);

   while(blocks >= 4)
      {
      SIMD_32 A0 = SIMD_32::load_be(in     );
      SIMD_32 A1 = SIMD_32::load_be(in + 16);
      SIMD_32 A2 = SIMD_32::load_be(in + 32);
      SIMD_32 A3 = SIMD_32::load_be(in + 48);

      SIMD_32::transpose(A0, A1, A2, A3);

      for(size_t i = 0; i != 16; ++i)
         {
         NOK_SIMD_THETA(A0, A1, A2, A3, K0, K1, K2, K3);

         A0 ^= SIMD_32(RC[16-i]);

         A1.rotate_left(1);
         A2.rotate_left(5);
         A3.rotate_left(2);

         NOK_SIMD_GAMMA(A0, A1, A2, A3);

         A1.rotate_right(1);
         A2.rotate_right(5);
         A3.rotate_right(2);
         }

      NOK_SIMD_THETA(A0, A1, A2, A3, K0, K1, K2, K3);
      A0 ^= SIMD_32(RC[0]);

      SIMD_32::transpose(A0, A1, A2, A3);

      A0.store_be(out);
      A1.store_be(out + 16);
      A2.store_be(out + 32);
      A3.store_be(out + 48);

      in += 64;
      out += 64;
      blocks -= 4;
      }

   if(blocks)
     Noekeon::decrypt_n(in, out, blocks);
   }
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::Camellia_128::encrypt_n(), Botan::DESX::encrypt_n(), Botan::Camellia_192::encrypt_n(), Botan::Camellia_256::encrypt_n(), Botan::XTS_Encryption::finish(), Botan::CTS_Encryption::finish(), Botan::CFB_Encryption::update(), Botan::CBC_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::Noekeon_SIMD::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

Reimplemented from Botan::Noekeon.

Definition at line 69 of file noekeon_simd.cpp.

References Botan::Noekeon::get_EK(), Botan::load_be(), NOK_SIMD_GAMMA, NOK_SIMD_THETA, and Botan::Noekeon::RC.

   {
   const secure_vector<u32bit>& EK = this->get_EK();

   SIMD_32 K0 = SIMD_32(EK[0]);
   SIMD_32 K1 = SIMD_32(EK[1]);
   SIMD_32 K2 = SIMD_32(EK[2]);
   SIMD_32 K3 = SIMD_32(EK[3]);

   while(blocks >= 4)
      {
      SIMD_32 A0 = SIMD_32::load_be(in     );
      SIMD_32 A1 = SIMD_32::load_be(in + 16);
      SIMD_32 A2 = SIMD_32::load_be(in + 32);
      SIMD_32 A3 = SIMD_32::load_be(in + 48);

      SIMD_32::transpose(A0, A1, A2, A3);

      for(size_t i = 0; i != 16; ++i)
         {
         A0 ^= SIMD_32(RC[i]);

         NOK_SIMD_THETA(A0, A1, A2, A3, K0, K1, K2, K3);

         A1.rotate_left(1);
         A2.rotate_left(5);
         A3.rotate_left(2);

         NOK_SIMD_GAMMA(A0, A1, A2, A3);

         A1.rotate_right(1);
         A2.rotate_right(5);
         A3.rotate_right(2);
         }

      A0 ^= SIMD_32(RC[16]);
      NOK_SIMD_THETA(A0, A1, A2, A3, K0, K1, K2, K3);

      SIMD_32::transpose(A0, A1, A2, A3);

      A0.store_be(out);
      A1.store_be(out + 16);
      A2.store_be(out + 32);
      A3.store_be(out + 48);

      in += 64;
      out += 64;
      blocks -= 4;
      }

   if(blocks)
     Noekeon::encrypt_n(in, out, blocks);
   }
const secure_vector<u32bit>& Botan::Noekeon::get_DK ( ) const [inline, protected, inherited]
Returns:
const reference to decryption subkeys

Definition at line 41 of file noekeon.h.

Referenced by decrypt_n().

{ return DK; }
const secure_vector<u32bit>& Botan::Noekeon::get_EK ( ) const [inline, protected, inherited]
Returns:
const reference to encryption subkeys

Definition at line 36 of file noekeon.h.

Referenced by encrypt_n().

{ return EK; }
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::Noekeon::name ( ) const [inline, virtual, inherited]

Implements Botan::SymmetricAlgorithm.

Definition at line 25 of file noekeon.h.

{ return "Noekeon"; }
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::CBC_Mode::update_granularity(), and Botan::ECB_Mode::update_granularity().

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

Reimplemented from Botan::BlockCipher.

Definition at line 21 of file noekeon_simd.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);
         }

Member Data Documentation

const byte Botan::Noekeon::RC [static, protected, inherited]
Initial value:
 {
   0x80, 0x1B, 0x36, 0x6C, 0xD8, 0xAB, 0x4D, 0x9A,
   0x2F, 0x5E, 0xBC, 0x63, 0xC6, 0x97, 0x35, 0x6A,
   0xD4 }

The Noekeon round constants

Definition at line 31 of file noekeon.h.

Referenced by Botan::Noekeon::decrypt_n(), decrypt_n(), Botan::Noekeon::encrypt_n(), and encrypt_n().


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