Botan::SSL3_PRF Class Reference

#include <prf_ssl3.h>

Inheritance diagram for Botan::SSL3_PRF:

Public Member Functions
void	clear ()
KDF *	clone () const
SecureVector< byte >	derive (size_t, const byte[], size_t, const byte[], size_t) const
SecureVector< byte >	derive_key (size_t key_len, const byte secret[], size_t secret_len, const byte salt[], size_t salt_len) const
SecureVector< byte >	derive_key (size_t key_len, const byte secret[], size_t secret_len, const std::string &salt="") const
SecureVector< byte >	derive_key (size_t key_len, const MemoryRegion< byte > &secret, const byte salt[], size_t salt_len) const
SecureVector< byte >	derive_key (size_t key_len, const MemoryRegion< byte > &secret, const MemoryRegion< byte > &salt) const
SecureVector< byte >	derive_key (size_t key_len, const MemoryRegion< byte > &secret, const std::string &salt="") const
std::string	name () const

Detailed Description

PRF used in SSLv3

Definition at line 18 of file prf_ssl3.h.

Member Function Documentation

clear()

void Botan::KDF::clear ( )

inlinevirtualinherited

Zeroize internal state

Implements Botan::Algorithm.

Definition at line 81 of file kdf.h.

{}

clone()

KDF * Botan::SSL3_PRF::clone ( ) const

inlinevirtual

Implements Botan::KDF.

Definition at line 25 of file prf_ssl3.h.

{ return new SSL3_PRF; }

derive()

SecureVector< byte > Botan::SSL3_PRF::derive ( size_t key_len, const byte secret[], size_t secret_len, const byte seed[], size_t seed_len ) const

virtual

Implements Botan::KDF.

Definition at line 50 of file prf_ssl3.cpp.

   {
   if(key_len > 416)
      throw Invalid_Argument("SSL3_PRF: Requested key length is too large");
 
   MD5 md5;
   SHA_160 sha1;
 
   OctetString output;
 
   int counter = 0;
   while(key_len)
      {
      const size_t produce = std::min<size_t>(key_len, md5.output_length());
 
      output = output + next_hash(counter++, produce, md5, sha1,
                                  secret, secret_len, seed, seed_len);
 
      key_len -= produce;
      }
 
   return output.bits_of();
   }

References Botan::OctetString::bits_of(), and Botan::MD5::output_length().

derive_key() [1/5]

SecureVector< byte > Botan::KDF::derive_key ( size_t key_len, const byte secret[], size_t secret_len, const byte salt[], size_t salt_len ) const

inherited

Derive a key

Parameters

key_len	the desired output length in bytes
secret	the secret input
secret_len	size of secret in bytes
salt	a diversifier
salt_len	size of salt in bytes

Definition at line 61 of file kdf.cpp.

   {
   return derive(key_len, secret, secret_len, salt, salt_len);
   }

derive_key() [2/5]

SecureVector< byte > Botan::KDF::derive_key ( size_t key_len, const byte secret[], size_t secret_len, const std::string & salt = "" ) const

inherited

Derive a key

Parameters

key_len	the desired output length in bytes
secret	the secret input
secret_len	size of secret in bytes
salt	a diversifier

Definition at line 49 of file kdf.cpp.

   {
   return derive_key(key_len, secret, secret_len,
                     reinterpret_cast<const byte*>(salt.data()),
                     salt.length());
   }

References derive_key().

derive_key() [3/5]

SecureVector< byte > Botan::KDF::derive_key ( size_t key_len, const MemoryRegion< byte > & secret, const byte salt[], size_t salt_len ) const

inherited

Derive a key

Parameters

key_len	the desired output length in bytes
secret	the secret input
salt	a diversifier
salt_len	size of salt in bytes

Definition at line 27 of file kdf.cpp.

   {
   return derive_key(key_len, &secret[0], secret.size(),
                     salt, salt_len);
   }

References derive_key(), and Botan::MemoryRegion< T >::size().

derive_key() [4/5]

SecureVector< byte > Botan::KDF::derive_key ( size_t key_len, const MemoryRegion< byte > & secret, const MemoryRegion< byte > & salt ) const

inherited

Derive a key

Parameters

key_len	the desired output length in bytes
secret	the secret input
salt	a diversifier

Definition at line 38 of file kdf.cpp.

   {
   return derive_key(key_len, &secret[0], secret.size(),
                     &salt[0], salt.size());
   }

References derive_key(), and Botan::MemoryRegion< T >::size().

derive_key() [5/5]

SecureVector< byte > Botan::KDF::derive_key ( size_t key_len, const MemoryRegion< byte > & secret, const std::string & salt = "" ) const

inherited

Derive a key

Parameters

key_len	the desired output length in bytes
secret	the secret input
salt	a diversifier

Definition at line 15 of file kdf.cpp.

   {
   return derive_key(key_len, &secret[0], secret.size(),
                     reinterpret_cast<const byte*>(salt.data()),
                     salt.length());
   }

References derive_key(), and Botan::MemoryRegion< T >::size().

Referenced by derive_key(), derive_key(), derive_key(), and derive_key().

name()

std::string Botan::SSL3_PRF::name ( ) const

inlinevirtual

Returns

name of this algorithm

Implements Botan::Algorithm.

Definition at line 24 of file prf_ssl3.h.

{ return "SSL3-PRF"; }

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

• src/kdf/prf_ssl3/prf_ssl3.h
• src/kdf/prf_ssl3/prf_ssl3.cpp