Botan::GOST_28147_89 Class Reference

#include <gost_28147.h>

Inheritance diagram for Botan::GOST_28147_89:

Public Types
enum

Public Member Functions
size_t	block_size () const override
void	clear () override
BlockCipher *	clone () const override
void	decrypt (const uint8_t in[], uint8_t out[]) const
void	decrypt (uint8_t block[]) const
template<typename Alloc >
void	decrypt (std::vector< uint8_t, Alloc > &block) const
template<typename Alloc , typename Alloc2 >
void	decrypt (const std::vector< uint8_t, Alloc > &in, std::vector< uint8_t, Alloc2 > &out) const
void	decrypt_n (const uint8_t in[], uint8_t out[], size_t blocks) const override
void	decrypt_n_xex (uint8_t data[], const uint8_t mask[], size_t blocks) const override
void	encrypt (const uint8_t in[], uint8_t out[]) const
void	encrypt (uint8_t block[]) const
template<typename Alloc >
void	encrypt (std::vector< uint8_t, Alloc > &block) const
template<typename Alloc , typename Alloc2 >
void	encrypt (const std::vector< uint8_t, Alloc > &in, std::vector< uint8_t, Alloc2 > &out) const
void	encrypt_n (const uint8_t in[], uint8_t out[], size_t blocks) const override
void	encrypt_n_xex (uint8_t data[], const uint8_t mask[], size_t blocks) const override
	GOST_28147_89 (const GOST_28147_89_Params &params)
	GOST_28147_89 (const std::string &param_name)
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< uint8_t, Alloc > &key)
void	set_key (const uint8_t key[], size_t length)
bool	valid_keylength (size_t length) const

Static Public Member Functions
static std::unique_ptr< BlockCipher >	create (const std::string &algo_spec, const std::string &provider="")
static std::unique_ptr< BlockCipher >	create_or_throw (const std::string &algo_spec, const std::string &provider="")
static std::vector< std::string >	providers (const std::string &algo_spec)

Protected Member Functions
void	verify_key_set (bool cond) const

Detailed Description

GOST 28147-89

Definition at line 58 of file gost_28147.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

inherited

Definition at line 207 of file block_cipher.h.

{ BLOCK_SIZE = BS };

Constructor & Destructor Documentation

GOST_28147_89() [1/2]

Botan::GOST_28147_89::GOST_28147_89 ( const GOST_28147_89_Params &  params )

explicit

Parameters

params

the sbox parameters to use

Definition at line 60 of file gost_28147.cpp.

References Botan::GOST_28147_89_Params::sbox_pair().

                                                              : m_SBOX(1024)
   {
   // Convert the parallel 4x4 sboxes into larger word-based sboxes

   for(size_t i = 0; i != 256; ++i)
      {
      m_SBOX[i    ] = rotl<11, uint32_t>(param.sbox_pair(0, i));
      m_SBOX[i+256] = rotl<19, uint32_t>(param.sbox_pair(1, i));
      m_SBOX[i+512] = rotl<27, uint32_t>(param.sbox_pair(2, i));
      m_SBOX[i+768] = rotl< 3, uint32_t>(param.sbox_pair(3, i));
      }
   }

GOST_28147_89() [2/2]

Botan::GOST_28147_89::GOST_28147_89 ( const std::string &  param_name )

inlineexplicit

Definition at line 74 of file gost_28147.h.

                                                          :
         GOST_28147_89(GOST_28147_89_Params(param_name)) {}

Member Function Documentation

block_size()

size_t Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::block_size ( ) const

inlineoverridevirtualinherited

Returns

block size of this algorithm

Implements Botan::BlockCipher.

Definition at line 208 of file block_cipher.h.

{ return BS; }

clear()

void Botan::GOST_28147_89::clear ( )

overridevirtual

Reset the state.

Implements Botan::SymmetricAlgorithm.

Definition at line 183 of file gost_28147.cpp.

References Botan::zap().

Referenced by Botan::GOST_34_11::clear().

   {
   zap(m_EK);
   }

clone()

BlockCipher* Botan::GOST_28147_89::clone ( ) const

inlineoverridevirtual

Returns

new object representing the same algorithm as *this

Implements Botan::BlockCipher.

Definition at line 67 of file gost_28147.h.

{ return new GOST_28147_89(m_SBOX); }

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_spec	algorithm name
provider	provider implementation to choose

Returns

a null pointer if the algo/provider combination cannot be found

Definition at line 104 of file block_cipher.cpp.

References Botan::SCAN_Name::algo_name(), Botan::SCAN_Name::arg(), Botan::SCAN_Name::arg_as_integer(), Botan::SCAN_Name::arg_count(), Botan::SCAN_Name::arg_count_between(), Botan::BlockCipher::block_size(), BOTAN_UNUSED, Botan::HashFunction::create(), Botan::StreamCipher::create(), hash, Botan::make_openssl_block_cipher(), and Botan::BlockCipher::provider().

Referenced by botan_block_cipher_init(), Botan::AEAD_Mode::create(), Botan::MessageAuthenticationCode::create(), Botan::StreamCipher::create(), Botan::Cipher_Mode::create(), and Botan::BlockCipher::create_or_throw().

   {
#if defined(BOTAN_HAS_OPENSSL)
   if(provider.empty() || provider == "openssl")
      {
      if(auto bc = make_openssl_block_cipher(algo))
         return bc;

      if(!provider.empty())
         return nullptr;
      }
#endif

   // TODO: CommonCrypto
   // TODO: CryptoAPI
   // TODO: /dev/crypto

   // Only base providers from here on out
   if(provider.empty() == false && provider != "base")
      return nullptr;

#if defined(BOTAN_HAS_AES)
   if(algo == "AES-128")
      {
      return std::unique_ptr<BlockCipher>(new AES_128);
      }

   if(algo == "AES-192")
      {
      return std::unique_ptr<BlockCipher>(new AES_192);
      }

   if(algo == "AES-256")
      {
      return std::unique_ptr<BlockCipher>(new AES_256);
      }
#endif

#if defined(BOTAN_HAS_ARIA)
   if(algo == "ARIA-128")
      {
      return std::unique_ptr<BlockCipher>(new ARIA_128);
      }

   if(algo == "ARIA-192")
      {
      return std::unique_ptr<BlockCipher>(new ARIA_192);
      }

   if(algo == "ARIA-256")
      {
      return std::unique_ptr<BlockCipher>(new ARIA_256);
      }
#endif

#if defined(BOTAN_HAS_SERPENT)
   if(algo == "Serpent")
      {
      return std::unique_ptr<BlockCipher>(new Serpent);
      }
#endif

#if defined(BOTAN_HAS_SHACAL2)
   if(algo == "SHACAL2")
      {
      return std::unique_ptr<BlockCipher>(new SHACAL2);
      }
#endif

#if defined(BOTAN_HAS_TWOFISH)
   if(algo == "Twofish")
      {
      return std::unique_ptr<BlockCipher>(new Twofish);
      }
#endif

#if defined(BOTAN_HAS_THREEFISH_512)
   if(algo == "Threefish-512")
      {
      return std::unique_ptr<BlockCipher>(new Threefish_512);
      }
#endif

#if defined(BOTAN_HAS_BLOWFISH)
   if(algo == "Blowfish")
      {
      return std::unique_ptr<BlockCipher>(new Blowfish);
      }
#endif

#if defined(BOTAN_HAS_CAMELLIA)
   if(algo == "Camellia-128")
      {
      return std::unique_ptr<BlockCipher>(new Camellia_128);
      }

   if(algo == "Camellia-192")
      {
      return std::unique_ptr<BlockCipher>(new Camellia_192);
      }

   if(algo == "Camellia-256")
      {
      return std::unique_ptr<BlockCipher>(new Camellia_256);
      }
#endif

#if defined(BOTAN_HAS_DES)
   if(algo == "DES")
      {
      return std::unique_ptr<BlockCipher>(new DES);
      }

   if(algo == "DESX")
      {
      return std::unique_ptr<BlockCipher>(new DESX);
      }

   if(algo == "TripleDES" || algo == "3DES" || algo == "DES-EDE")
      {
      return std::unique_ptr<BlockCipher>(new TripleDES);
      }
#endif

#if defined(BOTAN_HAS_NOEKEON)
   if(algo == "Noekeon")
      {
      return std::unique_ptr<BlockCipher>(new Noekeon);
      }
#endif

#if defined(BOTAN_HAS_CAST_128)
   if(algo == "CAST-128" || algo == "CAST5")
      {
      return std::unique_ptr<BlockCipher>(new CAST_128);
      }
#endif

#if defined(BOTAN_HAS_CAST_256)
   if(algo == "CAST-256")
      {
      return std::unique_ptr<BlockCipher>(new CAST_256);
      }
#endif

#if defined(BOTAN_HAS_IDEA)
   if(algo == "IDEA")
      {
      return std::unique_ptr<BlockCipher>(new IDEA);
      }
#endif

#if defined(BOTAN_HAS_KASUMI)
   if(algo == "KASUMI")
      {
      return std::unique_ptr<BlockCipher>(new KASUMI);
      }
#endif

#if defined(BOTAN_HAS_MISTY1)
   if(algo == "MISTY1")
      {
      return std::unique_ptr<BlockCipher>(new MISTY1);
      }
#endif

#if defined(BOTAN_HAS_SEED)
   if(algo == "SEED")
      {
      return std::unique_ptr<BlockCipher>(new SEED);
      }
#endif

#if defined(BOTAN_HAS_SM4)
   if(algo == "SM4")
      {
      return std::unique_ptr<BlockCipher>(new SM4);
      }
#endif

#if defined(BOTAN_HAS_XTEA)
   if(algo == "XTEA")
      {
      return std::unique_ptr<BlockCipher>(new XTEA);
      }
#endif

   const SCAN_Name req(algo);

#if defined(BOTAN_HAS_GOST_28147_89)
   if(req.algo_name() == "GOST-28147-89")
      {
      return std::unique_ptr<BlockCipher>(new GOST_28147_89(req.arg(0, "R3411_94_TestParam")));
      }
#endif

#if defined(BOTAN_HAS_CASCADE)
   if(req.algo_name() == "Cascade" && req.arg_count() == 2)
      {
      std::unique_ptr<BlockCipher> c1(BlockCipher::create(req.arg(0)));
      std::unique_ptr<BlockCipher> c2(BlockCipher::create(req.arg(1)));

      if(c1 && c2)
         return std::unique_ptr<BlockCipher>(new Cascade_Cipher(c1.release(), c2.release()));
      }
#endif

#if defined(BOTAN_HAS_LION)
   if(req.algo_name() == "Lion" && req.arg_count_between(2, 3))
      {
      std::unique_ptr<HashFunction> hash(HashFunction::create(req.arg(0)));
      std::unique_ptr<StreamCipher> stream(StreamCipher::create(req.arg(1)));

      if(hash && stream)
         {
         const size_t block_size = req.arg_as_integer(2, 1024);
         return std::unique_ptr<BlockCipher>(new Lion(hash.release(), stream.release(), block_size));
         }
      }
#endif

   BOTAN_UNUSED(req);
   BOTAN_UNUSED(provider);

   return nullptr;
   }

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 334 of file block_cipher.cpp.

References Botan::BlockCipher::create(), and Botan::BlockCipher::provider().

Referenced by Botan::TLS::Connection_Cipher_State::Connection_Cipher_State(), Botan::Encrypted_PSK_Database::Encrypted_PSK_Database(), Botan::rfc3394_keyunwrap(), and Botan::rfc3394_keywrap().

   {
   if(auto bc = BlockCipher::create(algo, provider))
      {
      return bc;
      }
   throw Lookup_Error("Block cipher", algo, provider);
   }

decrypt() [1/4]

void Botan::BlockCipher::decrypt ( const uint8_t  in[], uint8_t  out[]  ) const

inlineinherited

Decrypt a block.

Parameters

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 91 of file block_cipher.h.

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

         { decrypt_n(in, out, 1); }

decrypt() [2/4]

void Botan::BlockCipher::decrypt ( uint8_t  block[] ) const

inlineinherited

Decrypt a block.

Parameters

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 108 of file block_cipher.h.

{ decrypt_n(block, block, 1); }

decrypt() [3/4]

template<typename Alloc >

void Botan::BlockCipher::decrypt ( std::vector< uint8_t, Alloc > &  block ) const

inlineinherited

Decrypt one or more blocks

Parameters

block

the input/output buffer (multiple of block_size())

Definition at line 125 of file block_cipher.h.

         {
         return decrypt_n(block.data(), block.data(), block.size() / block_size());
         }

decrypt() [4/4]

template<typename Alloc , typename Alloc2 >

void Botan::BlockCipher::decrypt ( const std::vector< uint8_t, Alloc > &  in, std::vector< uint8_t, Alloc2 > &  out  ) const

inlineinherited

Decrypt one or more blocks

Parameters

in	the input buffer (multiple of block_size())
out	the output buffer (same size as in)

Definition at line 148 of file block_cipher.h.

         {
         return decrypt_n(in.data(), out.data(), in.size() / block_size());
         }

decrypt_n()

void Botan::GOST_28147_89::decrypt_n ( const uint8_t  in[], uint8_t  out[], size_t  blocks  ) const

overridevirtual

Decrypt one or more blocks

Parameters

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 145 of file gost_28147.cpp.

References Botan::Block_Cipher_Fixed_Params< 8, 32 >::BLOCK_SIZE, GOST_2ROUND, Botan::load_le< uint32_t >(), Botan::store_le(), and Botan::SymmetricAlgorithm::verify_key_set().

   {
   verify_key_set(m_EK.empty() == false);

   for(size_t i = 0; i != blocks; ++i)
      {
      uint32_t N1 = load_le<uint32_t>(in, 0);
      uint32_t N2 = load_le<uint32_t>(in, 1);

      GOST_2ROUND(N1, N2, 0, 1);
      GOST_2ROUND(N1, N2, 2, 3);
      GOST_2ROUND(N1, N2, 4, 5);
      GOST_2ROUND(N1, N2, 6, 7);

      for(size_t j = 0; j != 3; ++j)
         {
         GOST_2ROUND(N1, N2, 7, 6);
         GOST_2ROUND(N1, N2, 5, 4);
         GOST_2ROUND(N1, N2, 3, 2);
         GOST_2ROUND(N1, N2, 1, 0);
         }

      store_le(out, N2, N1);
      in += BLOCK_SIZE;
      out += BLOCK_SIZE;
      }
   }

decrypt_n_xex()

void Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::decrypt_n_xex ( uint8_t  data[], const uint8_t  mask[], size_t  blocks  ) const

inlineoverridevirtualinherited

Reimplemented from Botan::BlockCipher.

Definition at line 220 of file block_cipher.h.

         {
         xor_buf(data, mask, blocks * BS);
         decrypt_n(data, data, blocks);
         xor_buf(data, mask, blocks * BS);
         }

encrypt() [1/4]

void Botan::BlockCipher::encrypt ( const uint8_t  in[], uint8_t  out[]  ) const

inlineinherited

Encrypt a block.

Parameters

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 81 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::nist_key_wrap_padded(), Botan::CBC_Encryption::process(), and Botan::CFB_Mode::shift_register().

         { encrypt_n(in, out, 1); }

encrypt() [2/4]

void Botan::BlockCipher::encrypt ( uint8_t  block[] ) const

inlineinherited

Encrypt a block.

Parameters

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 100 of file block_cipher.h.

{ encrypt_n(block, block, 1); }

encrypt() [3/4]

template<typename Alloc >

void Botan::BlockCipher::encrypt ( std::vector< uint8_t, Alloc > &  block ) const

inlineinherited

Encrypt one or more blocks

Parameters

block

the input/output buffer (multiple of block_size())

Definition at line 115 of file block_cipher.h.

         {
         return encrypt_n(block.data(), block.data(), block.size() / block_size());
         }

encrypt() [4/4]

template<typename Alloc , typename Alloc2 >

void Botan::BlockCipher::encrypt ( const std::vector< uint8_t, Alloc > &  in, std::vector< uint8_t, Alloc2 > &  out  ) const

inlineinherited

Encrypt one or more blocks

Parameters

in	the input buffer (multiple of block_size())
out	the output buffer (same size as in)

Definition at line 136 of file block_cipher.h.

         {
         return encrypt_n(in.data(), out.data(), in.size() / block_size());
         }

encrypt_n()

void Botan::GOST_28147_89::encrypt_n ( const uint8_t  in[], uint8_t  out[], size_t  blocks  ) const

overridevirtual

Encrypt one or more blocks

Parameters

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 113 of file gost_28147.cpp.

References Botan::Block_Cipher_Fixed_Params< 8, 32 >::BLOCK_SIZE, GOST_2ROUND, Botan::load_le< uint32_t >(), Botan::store_le(), and Botan::SymmetricAlgorithm::verify_key_set().

   {
   verify_key_set(m_EK.empty() == false);

   for(size_t i = 0; i != blocks; ++i)
      {
      uint32_t N1 = load_le<uint32_t>(in, 0);
      uint32_t N2 = load_le<uint32_t>(in, 1);

      for(size_t j = 0; j != 3; ++j)
         {
         GOST_2ROUND(N1, N2, 0, 1);
         GOST_2ROUND(N1, N2, 2, 3);
         GOST_2ROUND(N1, N2, 4, 5);
         GOST_2ROUND(N1, N2, 6, 7);
         }

      GOST_2ROUND(N1, N2, 7, 6);
      GOST_2ROUND(N1, N2, 5, 4);
      GOST_2ROUND(N1, N2, 3, 2);
      GOST_2ROUND(N1, N2, 1, 0);

      store_le(out, N2, N1);

      in += BLOCK_SIZE;
      out += BLOCK_SIZE;
      }
   }

encrypt_n_xex()

void Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::encrypt_n_xex ( uint8_t  data[], const uint8_t  mask[], size_t  blocks  ) const

inlineoverridevirtualinherited

Reimplemented from Botan::BlockCipher.

Definition at line 211 of file block_cipher.h.

         {
         xor_buf(data, mask, blocks * BS);
         encrypt_n(data, data, blocks);
         xor_buf(data, mask, blocks * BS);
         }

key_spec()

Key_Length_Specification Botan::Block_Cipher_Fixed_Params< BS, KMIN, 0 , 1 >::key_spec ( ) const

inlineoverridevirtualinherited

Returns

object describing limits on key size

Implements Botan::SymmetricAlgorithm.

Definition at line 229 of file block_cipher.h.

         {
         return Key_Length_Specification(KMIN, KMAX, KMOD);
         }

maximum_keylength()

size_t Botan::SymmetricAlgorithm::maximum_keylength ( ) const

inlineinherited

Returns

minimum allowed key length

Definition at line 38 of file sym_algo.h.

         {
         return key_spec().maximum_keylength();
         }

minimum_keylength()

size_t Botan::SymmetricAlgorithm::minimum_keylength ( ) const

inlineinherited

Returns

maximum allowed key length

Definition at line 46 of file sym_algo.h.

         {
         return key_spec().minimum_keylength();
         }

name()

std::string Botan::GOST_28147_89::name ( ) const

overridevirtual

Returns

the algorithm name

Implements Botan::SymmetricAlgorithm.

Definition at line 73 of file gost_28147.cpp.

   {
   /*
   'Guess' the right name for the sbox on the basis of the values.
   This would need to be updated if support for other sbox parameters
   is added. Preferably, we would just store the string value in the
   constructor, but can't break binary compat.
   */
   std::string sbox_name = "";
   if(m_SBOX[0] == 0x00072000)
      sbox_name = "R3411_94_TestParam";
   else if(m_SBOX[0] == 0x0002D000)
      sbox_name = "R3411_CryptoPro";
   else
      throw Internal_Error("GOST-28147 unrecognized sbox value");

   return "GOST-28147-89(" + sbox_name + ")";
   }

parallel_bytes()

size_t Botan::BlockCipher::parallel_bytes ( ) const

inlineinherited

Returns

prefererred parallelism of this cipher in bytes

Definition at line 63 of file block_cipher.h.

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

         {
         return parallelism() * block_size() * BOTAN_BLOCK_CIPHER_PAR_MULT;
         }

parallelism()

virtual size_t Botan::BlockCipher::parallelism ( ) const

inlinevirtualinherited

Returns

native parallelism of this cipher in blocks

Reimplemented in Botan::AES_256, Botan::AES_192, Botan::Serpent, Botan::Threefish_512, Botan::AES_128, Botan::IDEA, Botan::Noekeon, and Botan::SHACAL2.

Definition at line 58 of file block_cipher.h.

{ 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, Botan::Noekeon, and Botan::SHACAL2.

Definition at line 72 of file block_cipher.h.

Referenced by Botan::BlockCipher::create(), and Botan::BlockCipher::create_or_throw().

{ 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_spec

algorithm name

Definition at line 344 of file block_cipher.cpp.

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

set_key() [1/3]

void Botan::SymmetricAlgorithm::set_key ( const SymmetricKey &  key )

inlineinherited

Set the symmetric key of this object.

Parameters

key	the SymmetricKey to be set.

Definition at line 65 of file sym_algo.h.

References Botan::OctetString::begin(), and Botan::OctetString::length().

Referenced by Botan::aont_package(), Botan::aont_unpackage(), botan_block_cipher_set_key(), botan_mac_set_key(), Botan::FPE::fe1_decrypt(), Botan::FPE::fe1_encrypt(), and Botan::pbkdf2().

         {
         set_key(key.begin(), key.length());
         }

set_key() [2/3]

template<typename Alloc >

void Botan::SymmetricAlgorithm::set_key ( const std::vector< uint8_t, Alloc > &  key )

inlineinherited

Definition at line 71 of file sym_algo.h.

         {
         set_key(key.data(), key.size());
         }

set_key() [3/3]

void Botan::SymmetricAlgorithm::set_key ( const uint8_t  key[], size_t  length  )

inherited

Set the symmetric key of this object.

Parameters

key	the to be set as a byte array.
length	in bytes of key param

Definition at line 17 of file sym_algo.cpp.

References Botan::SymmetricAlgorithm::name(), and Botan::SymmetricAlgorithm::valid_keylength().

   {
   if(!valid_keylength(length))
      throw Invalid_Key_Length(name(), length);
   key_schedule(key, length);
   }

valid_keylength()

bool Botan::SymmetricAlgorithm::valid_keylength ( size_t  length ) const

inlineinherited

Check whether a given key length is valid for this algorithm.

Parameters

length

the key length to be checked.

Returns

true if the key length is valid.

Definition at line 56 of file sym_algo.h.

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

         {
         return key_spec().valid_keylength(length);
         }

verify_key_set()

void Botan::SymmetricAlgorithm::verify_key_set ( bool  cond ) const

inlineprotectedinherited

Definition at line 89 of file sym_algo.h.

Referenced by Botan::Salsa20::cipher(), Botan::CTR_BE::cipher(), Botan::RC4::cipher(), Botan::SHAKE_128_Cipher::cipher(), Botan::ChaCha::cipher(), Botan::KASUMI::decrypt_n(), Botan::DES::decrypt_n(), Botan::Threefish_512::decrypt_n(), Botan::CAST_128::decrypt_n(), Botan::Twofish::decrypt_n(), Botan::DESX::decrypt_n(), Botan::MISTY1::decrypt_n(), Botan::XTEA::decrypt_n(), Botan::AES_128::decrypt_n(), Botan::Noekeon::decrypt_n(), Botan::Blowfish::decrypt_n(), Botan::Camellia_128::decrypt_n(), Botan::SEED::decrypt_n(), Botan::CAST_256::decrypt_n(), Botan::IDEA::decrypt_n(), Botan::SHACAL2::decrypt_n(), Botan::SM4::decrypt_n(), Botan::Serpent::decrypt_n(), Botan::Lion::decrypt_n(), Botan::ARIA_128::decrypt_n(), Botan::Camellia_192::decrypt_n(), Botan::TripleDES::decrypt_n(), Botan::ARIA_192::decrypt_n(), Botan::Camellia_256::decrypt_n(), decrypt_n(), Botan::AES_192::decrypt_n(), Botan::ARIA_256::decrypt_n(), Botan::AES_256::decrypt_n(), Botan::IDEA::encrypt_n(), Botan::KASUMI::encrypt_n(), Botan::SEED::encrypt_n(), Botan::Camellia_128::encrypt_n(), Botan::AES_128::encrypt_n(), Botan::Blowfish::encrypt_n(), Botan::MISTY1::encrypt_n(), Botan::Twofish::encrypt_n(), Botan::CAST_128::encrypt_n(), Botan::XTEA::encrypt_n(), Botan::CAST_256::encrypt_n(), Botan::SM4::encrypt_n(), Botan::Threefish_512::encrypt_n(), Botan::DESX::encrypt_n(), Botan::SHACAL2::encrypt_n(), Botan::DES::encrypt_n(), Botan::Noekeon::encrypt_n(), Botan::Serpent::encrypt_n(), Botan::Lion::encrypt_n(), Botan::ARIA_128::encrypt_n(), Botan::Camellia_192::encrypt_n(), Botan::TripleDES::encrypt_n(), Botan::ARIA_192::encrypt_n(), Botan::Camellia_256::encrypt_n(), encrypt_n(), Botan::AES_192::encrypt_n(), Botan::ARIA_256::encrypt_n(), Botan::AES_256::encrypt_n(), Botan::Salsa20::seek(), Botan::CTR_BE::seek(), Botan::ChaCha::seek(), and Botan::GHASH::update_associated_data().

         {
         if(cond == false)
            throw_key_not_set_error();
         }

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

• src/lib/block/gost_28147/gost_28147.h
• src/lib/block/gost_28147/gost_28147.cpp