Botan  1.11.34
Crypto and TLS for C++11
Public Types | Public Member Functions | Static Public Member Functions | List of all members
Botan::Twofish Class Referencefinal

#include <twofish.h>

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

Public Types

enum  
 

Public Member Functions

size_t block_size () const override
 
void clear () override
 
BlockCipherclone () const override
 
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 override
 
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 override
 
Key_Length_Specification key_spec () const override
 
size_t maximum_keylength () const
 
size_t minimum_keylength () const
 
std::string name () const override
 
size_t parallel_bytes () const
 
virtual size_t parallelism () const
 
virtual std::string provider () 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
 

Static Public Member Functions

static std::unique_ptr< BlockCiphercreate (const std::string &algo_spec, const std::string &provider="")
 
static std::unique_ptr< BlockCiphercreate_or_throw (const std::string &algo_spec, const std::string &provider="")
 
static std::vector< std::string > providers (const std::string &algo_spec)
 

Detailed Description

Twofish, an AES finalist

Definition at line 18 of file twofish.h.

Member Enumeration Documentation

§ anonymous enum

anonymous enum
inherited

Member Function Documentation

§ block_size()

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

Implements Botan::BlockCipher.

Definition at line 187 of file block_cipher.h.

187 { return BS; }

§ clear()

void Botan::Twofish::clear ( )
overridevirtual

Reset the state.

Implements Botan::SymmetricAlgorithm.

Definition at line 239 of file twofish.cpp.

References Botan::zap().

240  {
241  zap(m_SB);
242  zap(m_RK);
243  }
void zap(std::vector< T, Alloc > &vec)
Definition: secmem.h:213

§ clone()

BlockCipher* Botan::Twofish::clone ( ) const
inlineoverridevirtual
Returns
new object representing the same algorithm as *this

Implements Botan::BlockCipher.

Definition at line 26 of file twofish.h.

§ create()

std::unique_ptr< BlockCipher > Botan::BlockCipher::create ( const std::string &  algo_spec,
const std::string &  provider = "" 
)
staticinherited

Create an instance based on a name If provider is empty then best available is chosen.

Parameters
algo_specalgorithm name
providerprovider implementation to choose
Returns
a null pointer if the algo/provider combination cannot be found

Definition at line 88 of file block_cipher.cpp.

References Botan::BlockCipher::block_size(), Botan::HashFunction::create(), Botan::StreamCipher::create(), hash, and Botan::make_openssl_block_cipher().

Referenced by Botan::MessageAuthenticationCode::create(), Botan::StreamCipher::create(), Botan::BlockCipher::create_or_throw(), Botan::get_aead(), Botan::get_block_cipher(), and Botan::get_cipher_mode().

90  {
91 #if defined(BOTAN_HAS_OPENSSL)
92  if(provider.empty() || provider == "openssl")
93  {
94  if(auto bc = make_openssl_block_cipher(algo))
95  return bc;
96 
97  if(!provider.empty())
98  return nullptr;
99  }
100 #endif
101 
102  // TODO: CommonCrypto
103  // TODO: CryptoAPI
104  // TODO: /dev/crypto
105 
106  // Only base providers from here on out
107  if(provider.empty() == false && provider != "base")
108  return nullptr;
109 
110 #if defined(BOTAN_HAS_AES)
111  if(algo == "AES-128")
112  {
113  return std::unique_ptr<BlockCipher>(new AES_128);
114  }
115 
116  if(algo == "AES-192")
117  {
118  return std::unique_ptr<BlockCipher>(new AES_192);
119  }
120 
121  if(algo == "AES-256")
122  {
123  return std::unique_ptr<BlockCipher>(new AES_256);
124  }
125 #endif
126 
127 #if defined(BOTAN_HAS_SERPENT)
128  if(algo == "Serpent")
129  {
130  return std::unique_ptr<BlockCipher>(new Serpent);
131  }
132 #endif
133 
134 #if defined(BOTAN_HAS_TWOFISH)
135  if(algo == "Twofish")
136  {
137  return std::unique_ptr<BlockCipher>(new Twofish);
138  }
139 #endif
140 
141 #if defined(BOTAN_HAS_THREEFISH_512)
142  if(algo == "Threefish-512")
143  {
144  return std::unique_ptr<BlockCipher>(new Threefish_512);
145  }
146 #endif
147 
148 #if defined(BOTAN_HAS_BLOWFISH)
149  if(algo == "Blowfish")
150  {
151  return std::unique_ptr<BlockCipher>(new Blowfish);
152  }
153 #endif
154 
155 #if defined(BOTAN_HAS_CAMELLIA)
156  if(algo == "Camellia-128")
157  {
158  return std::unique_ptr<BlockCipher>(new Camellia_128);
159  }
160 
161  if(algo == "Camellia-192")
162  {
163  return std::unique_ptr<BlockCipher>(new Camellia_192);
164  }
165 
166  if(algo == "Camellia-256")
167  {
168  return std::unique_ptr<BlockCipher>(new Camellia_256);
169  }
170 #endif
171 
172 #if defined(BOTAN_HAS_DES)
173  if(algo == "DES")
174  {
175  return std::unique_ptr<BlockCipher>(new DES);
176  }
177 
178  if(algo == "DESX")
179  {
180  return std::unique_ptr<BlockCipher>(new DESX);
181  }
182 
183  if(algo == "TripleDES" || algo == "3DES" || algo == "DES-EDE")
184  {
185  return std::unique_ptr<BlockCipher>(new TripleDES);
186  }
187 #endif
188 
189 #if defined(BOTAN_HAS_NOEKEON)
190  if(algo == "Noekeon")
191  {
192  return std::unique_ptr<BlockCipher>(new Noekeon);
193  }
194 #endif
195 
196 #if defined(BOTAN_HAS_CAST)
197  if(algo == "CAST-128" || algo == "CAST5")
198  {
199  return std::unique_ptr<BlockCipher>(new CAST_128);
200  }
201 
202  if(algo == "CAST-256")
203  {
204  return std::unique_ptr<BlockCipher>(new CAST_256);
205  }
206 #endif
207 
208 #if defined(BOTAN_HAS_IDEA)
209  if(algo == "IDEA")
210  {
211  return std::unique_ptr<BlockCipher>(new IDEA);
212  }
213 #endif
214 
215 #if defined(BOTAN_HAS_KASUMI)
216  if(algo == "KASUMI")
217  {
218  return std::unique_ptr<BlockCipher>(new KASUMI);
219  }
220 #endif
221 
222 #if defined(BOTAN_HAS_MISTY1)
223  if(algo == "MISTY1")
224  {
225  return std::unique_ptr<BlockCipher>(new MISTY1);
226  }
227 #endif
228 
229 #if defined(BOTAN_HAS_SEED)
230  if(algo == "SEED")
231  {
232  return std::unique_ptr<BlockCipher>(new SEED);
233  }
234 #endif
235 
236 #if defined(BOTAN_HAS_XTEA)
237  if(algo == "XTEA")
238  {
239  return std::unique_ptr<BlockCipher>(new XTEA);
240  }
241 #endif
242 
243  const SCAN_Name req(algo);
244 
245 #if defined(BOTAN_HAS_GOST_28147_89)
246  if(req.algo_name() == "GOST-28147-89")
247  {
248  return std::unique_ptr<BlockCipher>(new GOST_28147_89(req.arg(0, "R3411_94_TestParam")));
249  }
250 #endif
251 
252 #if defined(BOTAN_HAS_CASCADE)
253  if(req.algo_name() == "Cascade" && req.arg_count() == 2)
254  {
255  std::unique_ptr<BlockCipher> c1(BlockCipher::create(req.arg(0)));
256  std::unique_ptr<BlockCipher> c2(BlockCipher::create(req.arg(1)));
257 
258  if(c1 && c2)
259  return std::unique_ptr<BlockCipher>(new Cascade_Cipher(c1.release(), c2.release()));
260  }
261 #endif
262 
263 #if defined(BOTAN_HAS_LION)
264  if(req.algo_name() == "Lion" && req.arg_count_between(2, 3))
265  {
266  std::unique_ptr<HashFunction> hash(HashFunction::create(req.arg(0)));
267  std::unique_ptr<StreamCipher> stream(StreamCipher::create(req.arg(1)));
268 
269  if(hash && stream)
270  {
271  const size_t block_size = req.arg_as_integer(2, 1024);
272  return std::unique_ptr<BlockCipher>(new Lion(hash.release(), stream.release(), block_size));
273  }
274  }
275 #endif
276 
277  return nullptr;
278  }
static std::unique_ptr< HashFunction > create(const std::string &algo_spec, const std::string &provider="")
Definition: hash.cpp:93
static std::unique_ptr< BlockCipher > create(const std::string &algo_spec, const std::string &provider="")
static std::unique_ptr< StreamCipher > create(const std::string &algo_spec, const std::string &provider="")
std::unique_ptr< BlockCipher > make_openssl_block_cipher(const std::string &name)
virtual std::string provider() const
Definition: block_cipher.h:71
virtual size_t block_size() const =0
MechanismType hash

§ create_or_throw()

std::unique_ptr< BlockCipher > Botan::BlockCipher::create_or_throw ( const std::string &  algo_spec,
const std::string &  provider = "" 
)
staticinherited

Create an instance based on a name, or throw if the algo/provider combination cannot be found. If provider is empty then best available is chosen.

Definition at line 282 of file block_cipher.cpp.

References Botan::BlockCipher::create().

Referenced by Botan::make_block_cipher(), Botan::rfc3394_keyunwrap(), Botan::rfc3394_keywrap(), and Botan::TLS::TLS_CBC_HMAC_AEAD_Mode::TLS_CBC_HMAC_AEAD_Mode().

284  {
285  if(auto bc = BlockCipher::create(algo, provider))
286  {
287  return bc;
288  }
289  throw Lookup_Error("Block cipher", algo, provider);
290  }
static std::unique_ptr< BlockCipher > create(const std::string &algo_spec, const std::string &provider="")
virtual std::string provider() const
Definition: block_cipher.h:71

§ decrypt() [1/4]

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 90 of file block_cipher.h.

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

91  { decrypt_n(in, out, 1); }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0

§ decrypt() [2/4]

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 107 of file block_cipher.h.

107 { decrypt_n(block, block, 1); }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0

§ decrypt() [3/4]

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 124 of file block_cipher.h.

125  {
126  return decrypt_n(block.data(), block.data(), block.size() / block_size());
127  }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0

§ decrypt() [4/4]

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 147 of file block_cipher.h.

149  {
150  return decrypt_n(in.data(), out.data(), in.size() / block_size());
151  }
virtual void decrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0

§ decrypt_n()

void Botan::Twofish::decrypt_n ( const byte  in[],
byte  out[],
size_t  blocks 
) const
overridevirtual

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 71 of file twofish.cpp.

References Botan::Block_Cipher_Fixed_Params< 16, 16, 32, 8 >::BLOCK_SIZE, BOTAN_PARALLEL_FOR, Botan::get_byte(), Botan::load_le(), Botan::rotate_left(), Botan::rotate_right(), and Botan::store_le().

72  {
73  BOTAN_PARALLEL_FOR(size_t i = 0; i < blocks; ++i)
74  {
75  u32bit A, B, C, D;
76  load_le(in + BLOCK_SIZE*i, A, B, C, D);
77 
78  A ^= m_RK[4];
79  B ^= m_RK[5];
80  C ^= m_RK[6];
81  D ^= m_RK[7];
82 
83  for(size_t j = 0; j != 16; j += 2)
84  {
85  u32bit X, Y;
86 
87  X = m_SB[ get_byte(3, A)] ^ m_SB[256+get_byte(2, A)] ^
88  m_SB[512+get_byte(1, A)] ^ m_SB[768+get_byte(0, A)];
89  Y = m_SB[ get_byte(0, B)] ^ m_SB[256+get_byte(3, B)] ^
90  m_SB[512+get_byte(2, B)] ^ m_SB[768+get_byte(1, B)];
91  X += Y;
92  Y += X + m_RK[39 - 2*j];
93  X += m_RK[38 - 2*j];
94 
95  C = rotate_left(C, 1) ^ X;
96  D = rotate_right(D ^ Y, 1);
97 
98  X = m_SB[ get_byte(3, C)] ^ m_SB[256+get_byte(2, C)] ^
99  m_SB[512+get_byte(1, C)] ^ m_SB[768+get_byte(0, C)];
100  Y = m_SB[ get_byte(0, D)] ^ m_SB[256+get_byte(3, D)] ^
101  m_SB[512+get_byte(2, D)] ^ m_SB[768+get_byte(1, D)];
102  X += Y;
103  Y += X + m_RK[37 - 2*j];
104  X += m_RK[36 - 2*j];
105 
106  A = rotate_left(A, 1) ^ X;
107  B = rotate_right(B ^ Y, 1);
108  }
109 
110  C ^= m_RK[0];
111  D ^= m_RK[1];
112  A ^= m_RK[2];
113  B ^= m_RK[3];
114 
115  store_le(out + BLOCK_SIZE*i, C, D, A, B);
116  }
117  }
T load_le(const byte in[], size_t off)
Definition: loadstor.h:129
void store_le(u16bit in, byte out[2])
Definition: loadstor.h:457
T rotate_left(T input, size_t rot)
Definition: rotate.h:21
std::uint32_t u32bit
Definition: types.h:33
byte get_byte(size_t byte_num, T input)
Definition: loadstor.h:47
#define BOTAN_PARALLEL_FOR
Definition: compiler.h:121
T rotate_right(T input, size_t rot)
Definition: rotate.h:32

§ encrypt() [1/4]

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 80 of file block_cipher.h.

Referenced by Botan::aont_package(), Botan::aont_unpackage(), Botan::GOST_34_11::clear(), Botan::DESX::encrypt_n(), Botan::XTS_Encryption::finish(), Botan::CTS_Encryption::finish(), Botan::CFB_Encryption::process(), Botan::CBC_Encryption::process(), Botan::CFB_Decryption::process(), Botan::TLS::TLS_CBC_HMAC_AEAD_Encryption::set_associated_data(), and Botan::CFB_Mode::valid_nonce_length().

81  { encrypt_n(in, out, 1); }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0

§ encrypt() [2/4]

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 99 of file block_cipher.h.

99 { encrypt_n(block, block, 1); }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0

§ encrypt() [3/4]

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 114 of file block_cipher.h.

115  {
116  return encrypt_n(block.data(), block.data(), block.size() / block_size());
117  }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0

§ encrypt() [4/4]

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 135 of file block_cipher.h.

137  {
138  return encrypt_n(in.data(), out.data(), in.size() / block_size());
139  }
virtual void encrypt_n(const byte in[], byte out[], size_t blocks) const =0
virtual size_t block_size() const =0

§ encrypt_n()

void Botan::Twofish::encrypt_n ( const byte  in[],
byte  out[],
size_t  blocks 
) const
overridevirtual

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 20 of file twofish.cpp.

References Botan::Block_Cipher_Fixed_Params< 16, 16, 32, 8 >::BLOCK_SIZE, BOTAN_PARALLEL_FOR, Botan::get_byte(), Botan::load_le(), Botan::rotate_left(), Botan::rotate_right(), and Botan::store_le().

21  {
22  BOTAN_PARALLEL_FOR(size_t i = 0; i < blocks; ++i)
23  {
24  u32bit A, B, C, D;
25  load_le(in + BLOCK_SIZE*i, A, B, C, D);
26 
27  A ^= m_RK[0];
28  B ^= m_RK[1];
29  C ^= m_RK[2];
30  D ^= m_RK[3];
31 
32  for(size_t j = 0; j != 16; j += 2)
33  {
34  u32bit X, Y;
35 
36  X = m_SB[ get_byte(3, A)] ^ m_SB[256+get_byte(2, A)] ^
37  m_SB[512+get_byte(1, A)] ^ m_SB[768+get_byte(0, A)];
38  Y = m_SB[ get_byte(0, B)] ^ m_SB[256+get_byte(3, B)] ^
39  m_SB[512+get_byte(2, B)] ^ m_SB[768+get_byte(1, B)];
40  X += Y;
41  Y += X + m_RK[2*j + 9];
42  X += m_RK[2*j + 8];
43 
44  C = rotate_right(C ^ X, 1);
45  D = rotate_left(D, 1) ^ Y;
46 
47  X = m_SB[ get_byte(3, C)] ^ m_SB[256+get_byte(2, C)] ^
48  m_SB[512+get_byte(1, C)] ^ m_SB[768+get_byte(0, C)];
49  Y = m_SB[ get_byte(0, D)] ^ m_SB[256+get_byte(3, D)] ^
50  m_SB[512+get_byte(2, D)] ^ m_SB[768+get_byte(1, D)];
51  X += Y;
52  Y += X + m_RK[2*j + 11];
53  X += m_RK[2*j + 10];
54 
55  A = rotate_right(A ^ X, 1);
56  B = rotate_left(B, 1) ^ Y;
57  }
58 
59  C ^= m_RK[4];
60  D ^= m_RK[5];
61  A ^= m_RK[6];
62  B ^= m_RK[7];
63 
64  store_le(out + BLOCK_SIZE*i, C, D, A, B);
65  }
66  }
T load_le(const byte in[], size_t off)
Definition: loadstor.h:129
void store_le(u16bit in, byte out[2])
Definition: loadstor.h:457
T rotate_left(T input, size_t rot)
Definition: rotate.h:21
std::uint32_t u32bit
Definition: types.h:33
byte get_byte(size_t byte_num, T input)
Definition: loadstor.h:47
#define BOTAN_PARALLEL_FOR
Definition: compiler.h:121
T rotate_right(T input, size_t rot)
Definition: rotate.h:32

§ key_spec()

Key_Length_Specification Botan::Block_Cipher_Fixed_Params< BS, KMIN, KMAX, KMOD >::key_spec ( ) const
inlineoverridevirtualinherited
Returns
object describing limits on key size

Implements Botan::SymmetricAlgorithm.

Definition at line 189 of file block_cipher.h.

190  {
191  return Key_Length_Specification(KMIN, KMAX, KMOD);
192  }

§ maximum_keylength()

size_t Botan::SymmetricAlgorithm::maximum_keylength ( ) const
inlineinherited
Returns
minimum allowed key length

Definition at line 39 of file sym_algo.h.

40  {
41  return key_spec().maximum_keylength();
42  }
size_t maximum_keylength() const
Definition: key_spec.h:69
virtual Key_Length_Specification key_spec() const =0

§ minimum_keylength()

size_t Botan::SymmetricAlgorithm::minimum_keylength ( ) const
inlineinherited
Returns
maximum allowed key length

Definition at line 47 of file sym_algo.h.

48  {
49  return key_spec().minimum_keylength();
50  }
virtual Key_Length_Specification key_spec() const =0
size_t minimum_keylength() const
Definition: key_spec.h:61

§ name()

std::string Botan::Twofish::name ( ) const
inlineoverridevirtual
Returns
the algorithm name

Implements Botan::SymmetricAlgorithm.

Definition at line 25 of file twofish.h.

25 { return "Twofish"; }

§ parallel_bytes()

size_t Botan::BlockCipher::parallel_bytes ( ) const
inlineinherited
Returns
prefererred parallelism of this cipher in bytes

Definition at line 62 of file block_cipher.h.

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

63  {
64  return parallelism() * block_size() * BOTAN_BLOCK_CIPHER_PAR_MULT;
65  }
virtual size_t parallelism() const
Definition: block_cipher.h:57
virtual size_t block_size() const =0

§ parallelism()

virtual size_t Botan::BlockCipher::parallelism ( ) const
inlinevirtualinherited
Returns
native parallelism of this cipher in blocks

Reimplemented in Botan::Serpent.

Definition at line 57 of file block_cipher.h.

57 { return 1; }

§ provider()

virtual std::string Botan::BlockCipher::provider ( ) const
inlinevirtualinherited
Returns
provider information about this implementation. Default is "base", might also return "sse2", "avx2", "openssl", or some other arbitrary string.

Reimplemented in Botan::AES_256, Botan::AES_192, Botan::Threefish_512, Botan::AES_128, Botan::IDEA, Botan::Serpent, and Botan::Noekeon.

Definition at line 71 of file block_cipher.h.

71 { return "base"; }

§ providers()

std::vector< std::string > Botan::BlockCipher::providers ( const std::string &  algo_spec)
staticinherited
Returns
list of available providers for this algorithm, empty if not available
Parameters
algo_specalgorithm name

Definition at line 292 of file block_cipher.cpp.

Referenced by Botan::TLS::Ciphersuite::by_id(), and Botan::get_block_cipher_providers().

293  {
294  return probe_providers_of<BlockCipher>(algo, { "base", "openssl" });
295  }

§ set_key() [1/3]

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 66 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::GOST_34_11::clear(), Botan::DESX::decrypt_n(), Botan::TLS::TLS_CBC_HMAC_AEAD_Mode::key_spec(), Botan::pbkdf2(), and Botan::TLS_PRF::TLS_PRF().

67  {
68  set_key(key.begin(), key.length());
69  }
void set_key(const SymmetricKey &key)
Definition: sym_algo.h:66

§ set_key() [2/3]

template<typename Alloc >
void Botan::SymmetricAlgorithm::set_key ( const std::vector< byte, Alloc > &  key)
inlineinherited

Definition at line 72 of file sym_algo.h.

73  {
74  set_key(key.data(), key.size());
75  }
void set_key(const SymmetricKey &key)
Definition: sym_algo.h:66

§ set_key() [3/3]

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 82 of file sym_algo.h.

83  {
84  if(!valid_keylength(length))
85  throw Invalid_Key_Length(name(), length);
86  key_schedule(key, length);
87  }
bool valid_keylength(size_t length) const
Definition: sym_algo.h:57
virtual std::string name() const =0

§ valid_keylength()

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 57 of file sym_algo.h.

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

58  {
59  return key_spec().valid_keylength(length);
60  }
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: