Botan  1.11.11
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Botan::Serpent_SIMD Class Reference

#include <serp_simd.h>

Inheritance diagram for Botan::Serpent_SIMD:
Botan::Serpent Botan::Block_Cipher_Fixed_Params< 16, 16, 32, 8 > Botan::BlockCipher Botan::SymmetricAlgorithm

Public Types

enum  
 

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_round_keys () const
 
void set_round_keys (const u32bit ks[132])
 

Detailed Description

Serpent implementation using SIMD

Definition at line 18 of file serp_simd.h.

Member Enumeration Documentation

anonymous enum
inherited

Member Function Documentation

size_t Botan::Block_Cipher_Fixed_Params< BS, KMIN, KMAX, KMOD >::block_size ( ) const
inlinevirtualinherited
Returns
block size of this algorithm

Implements Botan::BlockCipher.

Definition at line 152 of file block_cipher.h.

152 { return BS; }
void Botan::Serpent::clear ( )
virtualinherited

Implements Botan::SymmetricAlgorithm.

Definition at line 200 of file serpent.cpp.

References Botan::zap().

201  {
202  zap(round_key);
203  }
void zap(std::vector< T, Alloc > &vec)
Definition: secmem.h:176
BlockCipher* Botan::Serpent_SIMD::clone ( ) const
inlinevirtual
Returns
new object representing the same algorithm as *this

Reimplemented from Botan::Serpent.

Definition at line 26 of file serp_simd.h.

26 { return new Serpent_SIMD; }
void Botan::BlockCipher::decrypt ( const byte  in[],
byte  out[] 
) const
inlineinherited

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 57 of file block_cipher.h.

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

58  { decrypt_n(in, out, 1); }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0
void Botan::BlockCipher::decrypt ( byte  block[]) const
inlineinherited

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 74 of file block_cipher.h.

74 { decrypt_n(block, block, 1); }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0
template<typename Alloc >
void Botan::BlockCipher::decrypt ( std::vector< byte, Alloc > &  block) const
inlineinherited

Decrypt one or more blocks

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

Definition at line 91 of file block_cipher.h.

92  {
93  return decrypt_n(&block[0], &block[0], block.size() / block_size());
94  }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0
template<typename Alloc , typename Alloc2 >
void Botan::BlockCipher::decrypt ( const std::vector< byte, Alloc > &  in,
std::vector< byte, Alloc2 > &  out 
) const
inlineinherited

Decrypt one or more blocks

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

Definition at line 114 of file block_cipher.h.

116  {
117  return decrypt_n(&in[0], &out[0], in.size() / block_size());
118  }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0
void Botan::Serpent_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::Serpent.

Definition at line 200 of file serp_simd.cpp.

References Botan::Block_Cipher_Fixed_Params< 16, 16, 32, 8 >::BLOCK_SIZE, Botan::Serpent::decrypt_n(), and Botan::Serpent::get_round_keys().

201  {
202  const u32bit* KS = &(this->get_round_keys()[0]);
203 
204  while(blocks >= 4)
205  {
206  serpent_decrypt_4(in, out, KS);
207  in += 4 * BLOCK_SIZE;
208  out += 4 * BLOCK_SIZE;
209  blocks -= 4;
210  }
211 
212  if(blocks)
213  Serpent::decrypt_n(in, out, blocks);
214  }
uint32_t u32bit
Definition: types.h:32
const secure_vector< u32bit > & get_round_keys() const
Definition: serpent.h:32
void decrypt_n(const byte in[], byte out[], size_t blocks) const
Definition: serpent.cpp:107
void Botan::BlockCipher::encrypt ( const byte  in[],
byte  out[] 
) const
inlineinherited

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 47 of file block_cipher.h.

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

48  { encrypt_n(in, out, 1); }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0
void Botan::BlockCipher::encrypt ( byte  block[]) const
inlineinherited

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 66 of file block_cipher.h.

66 { encrypt_n(block, block, 1); }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0
template<typename Alloc >
void Botan::BlockCipher::encrypt ( std::vector< byte, Alloc > &  block) const
inlineinherited

Encrypt one or more blocks

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

Definition at line 81 of file block_cipher.h.

82  {
83  return encrypt_n(&block[0], &block[0], block.size() / block_size());
84  }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0
template<typename Alloc , typename Alloc2 >
void Botan::BlockCipher::encrypt ( const std::vector< byte, Alloc > &  in,
std::vector< byte, Alloc2 > &  out 
) const
inlineinherited

Encrypt one or more blocks

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

Definition at line 102 of file block_cipher.h.

104  {
105  return encrypt_n(&in[0], &out[0], in.size() / block_size());
106  }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0
void Botan::Serpent_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::Serpent.

Definition at line 181 of file serp_simd.cpp.

References Botan::Block_Cipher_Fixed_Params< 16, 16, 32, 8 >::BLOCK_SIZE, Botan::Serpent::encrypt_n(), and Botan::Serpent::get_round_keys().

182  {
183  const u32bit* KS = &(this->get_round_keys()[0]);
184 
185  while(blocks >= 4)
186  {
187  serpent_encrypt_4(in, out, KS);
188  in += 4 * BLOCK_SIZE;
189  out += 4 * BLOCK_SIZE;
190  blocks -= 4;
191  }
192 
193  if(blocks)
194  Serpent::encrypt_n(in, out, blocks);
195  }
void encrypt_n(const byte in[], byte out[], size_t blocks) const
Definition: serpent.cpp:55
uint32_t u32bit
Definition: types.h:32
const secure_vector< u32bit > & get_round_keys() const
Definition: serpent.h:32
const secure_vector<u32bit>& Botan::Serpent::get_round_keys ( ) const
inlineprotectedinherited

For use by subclasses using SIMD, asm, etc

Returns
const reference to the key schedule

Definition at line 32 of file serpent.h.

Referenced by Botan::Serpent_X86_32::decrypt_n(), decrypt_n(), Botan::Serpent_X86_32::encrypt_n(), and encrypt_n().

33  { return round_key; }
Key_Length_Specification Botan::Block_Cipher_Fixed_Params< BS, KMIN, KMAX, KMOD >::key_spec ( ) const
inlinevirtualinherited
Returns
object describing limits on key size

Implements Botan::SymmetricAlgorithm.

Definition at line 154 of file block_cipher.h.

155  {
156  return Key_Length_Specification(KMIN, KMAX, KMOD);
157  }
size_t Botan::SymmetricAlgorithm::maximum_keylength ( ) const
inlineinherited
Returns
minimum allowed key length

Definition at line 36 of file sym_algo.h.

37  {
38  return key_spec().maximum_keylength();
39  }
size_t maximum_keylength() const
Definition: key_spec.h:69
virtual Key_Length_Specification key_spec() const =0
size_t Botan::SymmetricAlgorithm::minimum_keylength ( ) const
inlineinherited
Returns
maxmium allowed key length

Definition at line 44 of file sym_algo.h.

45  {
46  return key_spec().minimum_keylength();
47  }
size_t minimum_keylength() const
Definition: key_spec.h:61
virtual Key_Length_Specification key_spec() const =0
std::string Botan::Serpent::name ( ) const
inlinevirtualinherited

Implements Botan::SymmetricAlgorithm.

Definition at line 25 of file serpent.h.

25 { return "Serpent"; }
size_t Botan::BlockCipher::parallel_bytes ( ) const
inlineinherited
Returns
prefererred parallelism of this cipher in bytes

Definition at line 35 of file block_cipher.h.

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

36  {
37  return parallelism() * block_size() * BOTAN_BLOCK_CIPHER_PAR_MULT;
38  }
virtual size_t parallelism() const
Definition: block_cipher.h:30
virtual size_t block_size() const =0
size_t Botan::Serpent_SIMD::parallelism ( ) const
inlinevirtual
Returns
native parallelism of this cipher in blocks

Reimplemented from Botan::BlockCipher.

Definition at line 21 of file serp_simd.h.

21 { return 4; }
void Botan::SymmetricAlgorithm::set_key ( const SymmetricKey key)
inlineinherited

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(), and Botan::aont_unpackage().

64  {
65  set_key(key.begin(), key.length());
66  }
void set_key(const SymmetricKey &key)
Definition: sym_algo.h:63
template<typename Alloc >
void Botan::SymmetricAlgorithm::set_key ( const std::vector< byte, Alloc > &  key)
inlineinherited

Definition at line 69 of file sym_algo.h.

70  {
71  set_key(&key[0], key.size());
72  }
void set_key(const SymmetricKey &key)
Definition: sym_algo.h:63
void Botan::SymmetricAlgorithm::set_key ( const byte  key[],
size_t  length 
)
inlineinherited

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.

80  {
81  if(!valid_keylength(length))
82  throw Invalid_Key_Length(name(), length);
83  key_schedule(key, length);
84  }
bool valid_keylength(size_t length) const
Definition: sym_algo.h:54
virtual std::string name() const =0
void Botan::Serpent::set_round_keys ( const u32bit  ks[132])
inlineprotectedinherited

For use by subclasses that implement the key schedule

Parameters
ksis the new key schedule value to set

Definition at line 39 of file serpent.h.

40  {
41  round_key.assign(&ks[0], &ks[132]);
42  }
bool Botan::SymmetricAlgorithm::valid_keylength ( size_t  length) const
inlineinherited

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().

55  {
56  return key_spec().valid_keylength(length);
57  }
bool valid_keylength(size_t length) const
Definition: key_spec.h:51
virtual Key_Length_Specification key_spec() const =0

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