#include <emsa_x931.h>

Inheritance diagram for Botan::EMSA_X931:

Public Member Functions
EMSA *	clone () override

virtual AlgorithmIdentifier	config_for_x509 (const Private_Key &key, const std::string &cert_hash_name) const

	EMSA_X931 (HashFunction *hash)

std::string	name () const override

Detailed Description

EMSA from X9.31 (EMSA2 in IEEE 1363) Useful for Rabin-Williams, also sometimes used with RSA in odd protocols.

Definition at line 23 of file emsa_x931.h.

Constructor & Destructor Documentation

◆ EMSA_X931()

Botan::EMSA_X931::EMSA_X931 ( HashFunction * hash )

explicit

Parameters

hash	the hash function to use

Definition at line 92 of file emsa_x931.cpp.

                                       : m_hash(hash)
   {
   m_empty_hash = m_hash->final();
 
   m_hash_id = ieee1363_hash_id(hash->name());
 
   if(!m_hash_id)
      throw Encoding_Error("EMSA_X931 no hash identifier for " + hash->name());
   }

Member Function Documentation

◆ clone()

EMSA * Botan::EMSA_X931::clone ( )

inlineoverridevirtual

Returns: a new object representing the same encoding method as *this

Implements Botan::EMSA.

Definition at line 31 of file emsa_x931.h.

31{ return new EMSA_X931(m_hash->clone()); }

Botan::EMSA_X931::EMSA_X931

EMSA_X931(HashFunction *hash)

Definition: emsa_x931.cpp:92

◆ config_for_x509()

AlgorithmIdentifier Botan::EMSA::config_for_x509	(	const Private_Key &	key,
		const std::string &	cert_hash_name
	)		const

virtualinherited

Prepare sig_algo for use in choose_sig_format for x509 certs

Parameters

key	used for checking compatibility with the encoding scheme
cert_hash_name	is checked to equal the hash for the encoding

Returns: algorithm identifier to signatures created using this key, padding method and hash.

Reimplemented in Botan::EMSA1, Botan::EMSA_PKCS1v15, and Botan::PSSR.

Definition at line 38 of file emsa.cpp.

   {
   throw Not_Implemented("Encoding " + name() + " not supported for signing X509 objects");
   }

References Botan::EMSA::name().

◆ name()

std::string Botan::EMSA_X931::name ( ) const

overridevirtual

Returns: the SCAN name of the encoding/padding scheme