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/*************************************************
* Algorithm Identifier Source File *
* (C) 1999-2007 The Botan Project *
*************************************************/
#include <botan/alg_id.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
#include <botan/oids.h>
namespace Botan {
/*************************************************
* Create an AlgorithmIdentifier *
*************************************************/
AlgorithmIdentifier::AlgorithmIdentifier(const OID& alg_id,
const MemoryRegion<byte>& param)
{
oid = alg_id;
parameters = param;
}
/*************************************************
* Create an AlgorithmIdentifier *
*************************************************/
AlgorithmIdentifier::AlgorithmIdentifier(const std::string& alg_id,
const MemoryRegion<byte>& param)
{
oid = OIDS::lookup(alg_id);
parameters = param;
}
/*************************************************
* Create an AlgorithmIdentifier *
*************************************************/
AlgorithmIdentifier::AlgorithmIdentifier(const OID& alg_id,
Encoding_Option option)
{
const byte DER_NULL[] = { 0x05, 0x00 };
oid = alg_id;
if(option == USE_NULL_PARAM)
parameters.push_back(DER_NULL, sizeof(DER_NULL));
}
/*************************************************
* Create an AlgorithmIdentifier *
*************************************************/
AlgorithmIdentifier::AlgorithmIdentifier(const std::string& alg_id,
Encoding_Option option)
{
const byte DER_NULL[] = { 0x05, 0x00 };
oid = OIDS::lookup(alg_id);
if(option == USE_NULL_PARAM)
parameters.push_back(DER_NULL, sizeof(DER_NULL));
}
/*************************************************
* Compare two AlgorithmIdentifiers *
*************************************************/
bool operator==(const AlgorithmIdentifier& a1, const AlgorithmIdentifier& a2)
{
if(a1.oid != a2.oid)
return false;
if(a1.parameters != a2.parameters)
return false;
return true;
}
/*************************************************
* Compare two AlgorithmIdentifiers *
*************************************************/
bool operator!=(const AlgorithmIdentifier& a1, const AlgorithmIdentifier& a2)
{
return !(a1 == a2);
}
/*************************************************
* DER encode an AlgorithmIdentifier *
*************************************************/
void AlgorithmIdentifier::encode_into(DER_Encoder& codec) const
{
codec.start_cons(SEQUENCE)
.encode(oid)
.raw_bytes(parameters)
.end_cons();
}
/*************************************************
* Decode a BER encoded AlgorithmIdentifier *
*************************************************/
void AlgorithmIdentifier::decode_from(BER_Decoder& codec)
{
codec.start_cons(SEQUENCE)
.decode(oid)
.raw_bytes(parameters)
.end_cons();
}
}
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