Botan::TLS_PRF Class Reference

#include <prf_tls.h>

Inheritance diagram for Botan::TLS_PRF:

Public Member Functions
void	clear ()
KDF *	clone () const
SecureVector< byte >	derive (size_t key_len, const byte secret[], size_t secret_len, const byte seed[], size_t seed_len) 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
	TLS_PRF ()
	~TLS_PRF ()

Detailed Description

PRF used in TLS 1.0/1.1

Definition at line 20 of file prf_tls.h.

Constructor & Destructor Documentation

TLS_PRF()

Botan::TLS_PRF::TLS_PRF

(

)

Definition at line 53 of file prf_tls.cpp.

   {
   hmac_md5 = new HMAC(new MD5);
   hmac_sha1 = new HMAC(new SHA_160);
   }

References Botan::HMAC::HMAC().

Referenced by clone().

~TLS_PRF()

Botan::TLS_PRF::~TLS_PRF

(

)

Definition at line 59 of file prf_tls.cpp.

   {
   delete hmac_md5;
   delete hmac_sha1;
   }

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::TLS_PRF::clone ( ) const

inlinevirtual

Implements Botan::KDF.

Definition at line 28 of file prf_tls.h.

{ return new TLS_PRF; }

References TLS_PRF().

derive()

SecureVector< byte > Botan::TLS_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 68 of file prf_tls.cpp.

   {
   SecureVector<byte> output(key_len);
 
   size_t S1_len = (secret_len + 1) / 2,
          S2_len = (secret_len + 1) / 2;
   const byte* S1 = secret;
   const byte* S2 = secret + (secret_len - S2_len);
 
   P_hash(output, hmac_md5,  S1, S1_len, seed, seed_len);
   P_hash(output, hmac_sha1, S2, S2_len, seed, seed_len);
 
   return output;
   }

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::TLS_PRF::name ( ) const

inlinevirtual

Returns

name of this algorithm

Implements Botan::Algorithm.

Definition at line 27 of file prf_tls.h.

{ return "TLS-PRF"; }

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

• src/kdf/prf_tls/prf_tls.h
• src/kdf/prf_tls/prf_tls.cpp