Botan  1.11.15
Public Types | Public Member Functions
Botan::TLS_PRF Class Reference

#include <prf_tls.h>

Inheritance diagram for Botan::TLS_PRF:
Botan::KDF

List of all members.

Public Types

typedef SCAN_Name Spec

Public Member Functions

KDFclone () const
secure_vector< bytederive_key (size_t key_len, const byte secret[], size_t secret_len, const byte salt[], size_t salt_len) const
secure_vector< bytederive_key (size_t key_len, const secure_vector< byte > &secret, const std::string &salt="") const
template<typename Alloc , typename Alloc2 >
secure_vector< bytederive_key (size_t key_len, const std::vector< byte, Alloc > &secret, const std::vector< byte, Alloc2 > &salt) const
secure_vector< bytederive_key (size_t key_len, const secure_vector< byte > &secret, const byte salt[], size_t salt_len) const
secure_vector< bytederive_key (size_t key_len, const byte secret[], size_t secret_len, const std::string &salt="") const
size_t kdf (byte key[], size_t key_len, const byte secret[], size_t secret_len, const byte salt[], size_t salt_len) const override
std::string name () const
 TLS_PRF ()

Detailed Description

PRF used in TLS 1.0/1.1

Definition at line 19 of file prf_tls.h.


Member Typedef Documentation

typedef SCAN_Name Botan::KDF::Spec [inherited]

Definition at line 119 of file kdf.h.


Constructor & Destructor Documentation

Definition at line 26 of file prf_tls.cpp.

   {
   m_hmac_md5.reset(make_a<MessageAuthenticationCode>("HMAC(MD5)"));
   m_hmac_sha1.reset(make_a<MessageAuthenticationCode>("HMAC(SHA-1)"));
   }

Member Function Documentation

KDF* Botan::TLS_PRF::clone ( ) const [inline, virtual]

Implements Botan::KDF.

Definition at line 24 of file prf_tls.h.

{ return new TLS_PRF; }
secure_vector<byte> Botan::KDF::derive_key ( size_t  key_len,
const byte  secret[],
size_t  secret_len,
const byte  salt[],
size_t  salt_len 
) const [inline, inherited]

Derive a key

Parameters:
key_lenthe desired output length in bytes
secretthe secret input
secret_lensize of secret in bytes
salta diversifier
salt_lensize of salt in bytes

Definition at line 41 of file kdf.h.

         {
         secure_vector<byte> key(key_len);
         key.resize(kdf(&key[0], key.size(), secret, secret_len, salt, salt_len));
         return key;
         }
secure_vector<byte> Botan::KDF::derive_key ( size_t  key_len,
const secure_vector< byte > &  secret,
const std::string &  salt = "" 
) const [inline, inherited]

Derive a key

Parameters:
key_lenthe desired output length in bytes
secretthe secret input
salta diversifier

Definition at line 58 of file kdf.h.

         {
         return derive_key(key_len, &secret[0], secret.size(),
                           reinterpret_cast<const byte*>(salt.data()),
                           salt.length());
         }
template<typename Alloc , typename Alloc2 >
secure_vector<byte> Botan::KDF::derive_key ( size_t  key_len,
const std::vector< byte, Alloc > &  secret,
const std::vector< byte, Alloc2 > &  salt 
) const [inline, inherited]

Derive a key

Parameters:
key_lenthe desired output length in bytes
secretthe secret input
salta diversifier

Definition at line 74 of file kdf.h.

         {
         return derive_key(key_len,
                           &secret[0], secret.size(),
                           &salt[0], salt.size());
         }
secure_vector<byte> Botan::KDF::derive_key ( size_t  key_len,
const secure_vector< byte > &  secret,
const byte  salt[],
size_t  salt_len 
) const [inline, inherited]

Derive a key

Parameters:
key_lenthe desired output length in bytes
secretthe secret input
salta diversifier
salt_lensize of salt in bytes

Definition at line 90 of file kdf.h.

         {
         return derive_key(key_len,
                           &secret[0], secret.size(),
                           salt, salt_len);
         }
secure_vector<byte> Botan::KDF::derive_key ( size_t  key_len,
const byte  secret[],
size_t  secret_len,
const std::string &  salt = "" 
) const [inline, inherited]

Derive a key

Parameters:
key_lenthe desired output length in bytes
secretthe secret input
secret_lensize of secret in bytes
salta diversifier

Definition at line 107 of file kdf.h.

         {
         return derive_key(key_len, secret, secret_len,
                           reinterpret_cast<const byte*>(salt.data()),
                           salt.length());
         }
size_t Botan::TLS_PRF::kdf ( byte  key[],
size_t  key_len,
const byte  secret[],
size_t  secret_len,
const byte  salt[],
size_t  salt_len 
) const [override, virtual]

Implements Botan::KDF.

Definition at line 74 of file prf_tls.cpp.

   {
   const 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(key, key_len, *m_hmac_md5,  S1, S1_len, salt, salt_len);
   P_hash(key, key_len, *m_hmac_sha1, S2, S2_len, salt, salt_len);
   return key_len;
   }
std::string Botan::TLS_PRF::name ( ) const [inline, virtual]

Implements Botan::KDF.

Definition at line 22 of file prf_tls.h.

{ return "TLS-PRF"; }

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