Botan  1.11.10
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Botan::AES_192_NI Class Reference

#include <aes_ni.h>

Inheritance diagram for Botan::AES_192_NI:
Botan::Block_Cipher_Fixed_Params< 16, 24 > 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
 

Detailed Description

AES-192 using AES-NI

Definition at line 38 of file aes_ni.h.

Member Enumeration Documentation

anonymous enum
inherited

Member Function Documentation

size_t Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::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::AES_192_NI::clear ( )
virtual

Implements Botan::SymmetricAlgorithm.

Definition at line 532 of file aes_ni.cpp.

References Botan::zap().

533  {
534  zap(EK);
535  zap(DK);
536  }
void zap(std::vector< T, Alloc > &vec)
Definition: secmem.h:176
BlockCipher* Botan::AES_192_NI::clone ( ) const
inlinevirtual
Returns
new object representing the same algorithm as *this

Implements Botan::BlockCipher.

Definition at line 48 of file aes_ni.h.

48 { return new AES_192_NI; }
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::AES_192_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 401 of file aes_ni.cpp.

References AES_DEC_4_LAST_ROUNDS, and AES_DEC_4_ROUNDS.

402  {
403  const __m128i* in_mm = reinterpret_cast<const __m128i*>(in);
404  __m128i* out_mm = reinterpret_cast<__m128i*>(out);
405 
406  const __m128i* key_mm = reinterpret_cast<const __m128i*>(&DK[0]);
407 
408  __m128i K0 = _mm_loadu_si128(key_mm);
409  __m128i K1 = _mm_loadu_si128(key_mm + 1);
410  __m128i K2 = _mm_loadu_si128(key_mm + 2);
411  __m128i K3 = _mm_loadu_si128(key_mm + 3);
412  __m128i K4 = _mm_loadu_si128(key_mm + 4);
413  __m128i K5 = _mm_loadu_si128(key_mm + 5);
414  __m128i K6 = _mm_loadu_si128(key_mm + 6);
415  __m128i K7 = _mm_loadu_si128(key_mm + 7);
416  __m128i K8 = _mm_loadu_si128(key_mm + 8);
417  __m128i K9 = _mm_loadu_si128(key_mm + 9);
418  __m128i K10 = _mm_loadu_si128(key_mm + 10);
419  __m128i K11 = _mm_loadu_si128(key_mm + 11);
420  __m128i K12 = _mm_loadu_si128(key_mm + 12);
421 
422  while(blocks >= 4)
423  {
424  __m128i B0 = _mm_loadu_si128(in_mm + 0);
425  __m128i B1 = _mm_loadu_si128(in_mm + 1);
426  __m128i B2 = _mm_loadu_si128(in_mm + 2);
427  __m128i B3 = _mm_loadu_si128(in_mm + 3);
428 
429  B0 = _mm_xor_si128(B0, K0);
430  B1 = _mm_xor_si128(B1, K0);
431  B2 = _mm_xor_si128(B2, K0);
432  B3 = _mm_xor_si128(B3, K0);
433 
434  AES_DEC_4_ROUNDS(K1);
435  AES_DEC_4_ROUNDS(K2);
436  AES_DEC_4_ROUNDS(K3);
437  AES_DEC_4_ROUNDS(K4);
438  AES_DEC_4_ROUNDS(K5);
439  AES_DEC_4_ROUNDS(K6);
440  AES_DEC_4_ROUNDS(K7);
441  AES_DEC_4_ROUNDS(K8);
442  AES_DEC_4_ROUNDS(K9);
443  AES_DEC_4_ROUNDS(K10);
444  AES_DEC_4_ROUNDS(K11);
446 
447  _mm_storeu_si128(out_mm + 0, B0);
448  _mm_storeu_si128(out_mm + 1, B1);
449  _mm_storeu_si128(out_mm + 2, B2);
450  _mm_storeu_si128(out_mm + 3, B3);
451 
452  blocks -= 4;
453  in_mm += 4;
454  out_mm += 4;
455  }
456 
457  for(size_t i = 0; i != blocks; ++i)
458  {
459  __m128i B = _mm_loadu_si128(in_mm + i);
460 
461  B = _mm_xor_si128(B, K0);
462 
463  B = _mm_aesdec_si128(B, K1);
464  B = _mm_aesdec_si128(B, K2);
465  B = _mm_aesdec_si128(B, K3);
466  B = _mm_aesdec_si128(B, K4);
467  B = _mm_aesdec_si128(B, K5);
468  B = _mm_aesdec_si128(B, K6);
469  B = _mm_aesdec_si128(B, K7);
470  B = _mm_aesdec_si128(B, K8);
471  B = _mm_aesdec_si128(B, K9);
472  B = _mm_aesdec_si128(B, K10);
473  B = _mm_aesdec_si128(B, K11);
474  B = _mm_aesdeclast_si128(B, K12);
475 
476  _mm_storeu_si128(out_mm + i, B);
477  }
478  }
#define AES_DEC_4_LAST_ROUNDS(K)
Definition: aes_ni.cpp:94
#define AES_DEC_4_ROUNDS(K)
Definition: aes_ni.cpp:85
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_Mode::start(), Botan::CBC_Encryption::update(), Botan::CFB_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::AES_192_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 319 of file aes_ni.cpp.

References AES_ENC_4_LAST_ROUNDS, and AES_ENC_4_ROUNDS.

320  {
321  const __m128i* in_mm = reinterpret_cast<const __m128i*>(in);
322  __m128i* out_mm = reinterpret_cast<__m128i*>(out);
323 
324  const __m128i* key_mm = reinterpret_cast<const __m128i*>(&EK[0]);
325 
326  __m128i K0 = _mm_loadu_si128(key_mm);
327  __m128i K1 = _mm_loadu_si128(key_mm + 1);
328  __m128i K2 = _mm_loadu_si128(key_mm + 2);
329  __m128i K3 = _mm_loadu_si128(key_mm + 3);
330  __m128i K4 = _mm_loadu_si128(key_mm + 4);
331  __m128i K5 = _mm_loadu_si128(key_mm + 5);
332  __m128i K6 = _mm_loadu_si128(key_mm + 6);
333  __m128i K7 = _mm_loadu_si128(key_mm + 7);
334  __m128i K8 = _mm_loadu_si128(key_mm + 8);
335  __m128i K9 = _mm_loadu_si128(key_mm + 9);
336  __m128i K10 = _mm_loadu_si128(key_mm + 10);
337  __m128i K11 = _mm_loadu_si128(key_mm + 11);
338  __m128i K12 = _mm_loadu_si128(key_mm + 12);
339 
340  while(blocks >= 4)
341  {
342  __m128i B0 = _mm_loadu_si128(in_mm + 0);
343  __m128i B1 = _mm_loadu_si128(in_mm + 1);
344  __m128i B2 = _mm_loadu_si128(in_mm + 2);
345  __m128i B3 = _mm_loadu_si128(in_mm + 3);
346 
347  B0 = _mm_xor_si128(B0, K0);
348  B1 = _mm_xor_si128(B1, K0);
349  B2 = _mm_xor_si128(B2, K0);
350  B3 = _mm_xor_si128(B3, K0);
351 
352  AES_ENC_4_ROUNDS(K1);
353  AES_ENC_4_ROUNDS(K2);
354  AES_ENC_4_ROUNDS(K3);
355  AES_ENC_4_ROUNDS(K4);
356  AES_ENC_4_ROUNDS(K5);
357  AES_ENC_4_ROUNDS(K6);
358  AES_ENC_4_ROUNDS(K7);
359  AES_ENC_4_ROUNDS(K8);
360  AES_ENC_4_ROUNDS(K9);
361  AES_ENC_4_ROUNDS(K10);
362  AES_ENC_4_ROUNDS(K11);
364 
365  _mm_storeu_si128(out_mm + 0, B0);
366  _mm_storeu_si128(out_mm + 1, B1);
367  _mm_storeu_si128(out_mm + 2, B2);
368  _mm_storeu_si128(out_mm + 3, B3);
369 
370  blocks -= 4;
371  in_mm += 4;
372  out_mm += 4;
373  }
374 
375  for(size_t i = 0; i != blocks; ++i)
376  {
377  __m128i B = _mm_loadu_si128(in_mm + i);
378 
379  B = _mm_xor_si128(B, K0);
380 
381  B = _mm_aesenc_si128(B, K1);
382  B = _mm_aesenc_si128(B, K2);
383  B = _mm_aesenc_si128(B, K3);
384  B = _mm_aesenc_si128(B, K4);
385  B = _mm_aesenc_si128(B, K5);
386  B = _mm_aesenc_si128(B, K6);
387  B = _mm_aesenc_si128(B, K7);
388  B = _mm_aesenc_si128(B, K8);
389  B = _mm_aesenc_si128(B, K9);
390  B = _mm_aesenc_si128(B, K10);
391  B = _mm_aesenc_si128(B, K11);
392  B = _mm_aesenclast_si128(B, K12);
393 
394  _mm_storeu_si128(out_mm + i, B);
395  }
396  }
#define AES_ENC_4_ROUNDS(K)
Definition: aes_ni.cpp:67
#define AES_ENC_4_LAST_ROUNDS(K)
Definition: aes_ni.cpp:76
Key_Length_Specification Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::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.

Referenced by Botan::PBE_PKCS5v20::PBE_PKCS5v20().

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::AES_192_NI::name ( ) const
inlinevirtual

Implements Botan::SymmetricAlgorithm.

Definition at line 47 of file aes_ni.h.

47 { return "AES-192"; }
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::CBC_Mode::update_granularity(), and Botan::ECB_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::AES_192_NI::parallelism ( ) const
inlinevirtual
Returns
native parallelism of this cipher in blocks

Reimplemented from Botan::BlockCipher.

Definition at line 41 of file aes_ni.h.

41 { 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(), Botan::aont_unpackage(), Botan::MAC_Filter::MAC_Filter(), and Botan::StreamCipher_Filter::StreamCipher_Filter().

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
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: