Botan
1.11.15
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#include <cascade.h>
Public Types | |
typedef SCAN_Name | Spec |
Public Member Functions | |
size_t | block_size () const |
Cascade_Cipher (BlockCipher *cipher1, BlockCipher *cipher2) | |
Cascade_Cipher (const Cascade_Cipher &) | |
void | clear () |
BlockCipher * | clone () 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 |
Cascade_Cipher & | operator= (const Cascade_Cipher &) |
size_t | parallel_bytes () const |
virtual 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 |
Static Public Member Functions | |
static Cascade_Cipher * | make (const Spec &spec) |
typedef SCAN_Name Botan::BlockCipher::Spec [inherited] |
Definition at line 22 of file block_cipher.h.
Botan::Cascade_Cipher::Cascade_Cipher | ( | BlockCipher * | cipher1, |
BlockCipher * | cipher2 | ||
) |
Create a cascade of two block ciphers
cipher1 | the first cipher |
cipher2 | the second cipher |
Definition at line 97 of file cascade.cpp.
References block_size(), Botan::BlockCipher::block_size(), and name().
Referenced by clone(), and make().
: m_cipher1(c1), m_cipher2(c2) { m_block = block_size_for_cascade(c1->block_size(), c2->block_size()); if(block_size() % c1->block_size() || block_size() % c2->block_size()) throw Internal_Error("Failure in " + name() + " constructor"); }
Botan::Cascade_Cipher::Cascade_Cipher | ( | const Cascade_Cipher & | ) |
size_t Botan::Cascade_Cipher::block_size | ( | ) | const [inline, virtual] |
Implements Botan::BlockCipher.
Definition at line 24 of file cascade.h.
Referenced by Cascade_Cipher(), decrypt_n(), and encrypt_n().
{ return m_block; }
void Botan::Cascade_Cipher::clear | ( | ) | [virtual] |
Implements Botan::SymmetricAlgorithm.
Definition at line 54 of file cascade.cpp.
{ m_cipher1->clear(); m_cipher2->clear(); }
BlockCipher * Botan::Cascade_Cipher::clone | ( | ) | const [virtual] |
Implements Botan::BlockCipher.
Definition at line 65 of file cascade.cpp.
References Cascade_Cipher().
{ return new Cascade_Cipher(m_cipher1->clone(), m_cipher2->clone()); }
void Botan::BlockCipher::decrypt | ( | const byte | in[], |
byte | out[] | ||
) | const [inline, inherited] |
Decrypt a block.
in | The ciphertext block to be decypted as a byte array. Must be of length block_size(). |
out | The 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.
block | the 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); }
void Botan::BlockCipher::decrypt | ( | std::vector< byte, Alloc > & | block | ) | const [inline, inherited] |
Decrypt one or more blocks
block | the 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()); }
void Botan::BlockCipher::decrypt | ( | const std::vector< byte, Alloc > & | in, |
std::vector< byte, Alloc2 > & | out | ||
) | const [inline, inherited] |
Decrypt one or more blocks
in | the input buffer (multiple of block_size()) |
out | the 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::Cascade_Cipher::decrypt_n | ( | const byte | in[], |
byte | out[], | ||
size_t | blocks | ||
) | const [virtual] |
Decrypt one or more blocks
in | the input buffer (multiple of block_size()) |
out | the output buffer (same size as in) |
blocks | the number of blocks to process |
Implements Botan::BlockCipher.
Definition at line 36 of file cascade.cpp.
References block_size().
{ size_t c1_blocks = blocks * (block_size() / m_cipher1->block_size()); size_t c2_blocks = blocks * (block_size() / m_cipher2->block_size()); m_cipher2->decrypt_n(in, out, c2_blocks); m_cipher1->decrypt_n(out, out, c1_blocks); }
void Botan::BlockCipher::encrypt | ( | const byte | in[], |
byte | out[] | ||
) | const [inline, inherited] |
Encrypt a block.
in | The plaintext block to be encrypted as a byte array. Must be of length block_size(). |
out | The 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.
block | the 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); }
void Botan::BlockCipher::encrypt | ( | std::vector< byte, Alloc > & | block | ) | const [inline, inherited] |
Encrypt one or more blocks
block | the 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()); }
void Botan::BlockCipher::encrypt | ( | const std::vector< byte, Alloc > & | in, |
std::vector< byte, Alloc2 > & | out | ||
) | const [inline, inherited] |
Encrypt one or more blocks
in | the input buffer (multiple of block_size()) |
out | the 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::Cascade_Cipher::encrypt_n | ( | const byte | in[], |
byte | out[], | ||
size_t | blocks | ||
) | const [virtual] |
Encrypt one or more blocks
in | the input buffer (multiple of block_size()) |
out | the output buffer (same size as in) |
blocks | the number of blocks to process |
Implements Botan::BlockCipher.
Definition at line 26 of file cascade.cpp.
References block_size().
{ size_t c1_blocks = blocks * (block_size() / m_cipher1->block_size()); size_t c2_blocks = blocks * (block_size() / m_cipher2->block_size()); m_cipher1->encrypt_n(in, out, c1_blocks); m_cipher2->encrypt_n(out, out, c2_blocks); }
Key_Length_Specification Botan::Cascade_Cipher::key_spec | ( | ) | const [inline, virtual] |
Implements Botan::SymmetricAlgorithm.
Definition at line 26 of file cascade.h.
{
return Key_Length_Specification(m_cipher1->maximum_keylength() +
m_cipher2->maximum_keylength());
}
Cascade_Cipher * Botan::Cascade_Cipher::make | ( | const Spec & | spec | ) | [static] |
Definition at line 15 of file cascade.cpp.
References Botan::SCAN_Name::arg(), and Cascade_Cipher().
{ auto& block_cipher = Algo_Registry<BlockCipher>::global_registry(); std::unique_ptr<BlockCipher> c1(block_cipher.make(spec.arg(0))); std::unique_ptr<BlockCipher> c2(block_cipher.make(spec.arg(1))); if(c1 && c2) return new Cascade_Cipher(c1.release(), c2.release()); return nullptr; }
size_t Botan::SymmetricAlgorithm::maximum_keylength | ( | ) | const [inline, inherited] |
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] |
Definition at line 44 of file sym_algo.h.
{ return key_spec().minimum_keylength(); }
std::string Botan::Cascade_Cipher::name | ( | ) | const [virtual] |
Implements Botan::SymmetricAlgorithm.
Definition at line 60 of file cascade.cpp.
Referenced by Cascade_Cipher().
{ return "Cascade(" + m_cipher1->name() + "," + m_cipher2->name() + ")"; }
Cascade_Cipher& Botan::Cascade_Cipher::operator= | ( | const Cascade_Cipher & | ) |
size_t Botan::BlockCipher::parallel_bytes | ( | ) | const [inline, inherited] |
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; }
virtual size_t Botan::BlockCipher::parallelism | ( | ) | const [inline, virtual, inherited] |
Reimplemented in Botan::AES_256_NI, Botan::AES_192_NI, Botan::AES_128_NI, Botan::IDEA_SSE2, Botan::Noekeon_SIMD, Botan::Serpent_SIMD, and Botan::XTEA_SIMD.
Definition at line 32 of file block_cipher.h.
{ return 1; }
void Botan::SymmetricAlgorithm::set_key | ( | const SymmetricKey & | key | ) | [inline, inherited] |
Set the symmetric key of this object.
key | the 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()); }
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.
key | the to be set as a byte array. |
length | in 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.
length | the key length to be checked. |
Definition at line 54 of file sym_algo.h.
Referenced by Botan::aont_package(), and Botan::aont_unpackage().
{ return key_spec().valid_keylength(length); }