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/*************************************************
* Algorithm Identifier Source File *
* (C) 1999-2006 The Botan Project *
*************************************************/
#include <botan/asn1_obj.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) { }
/*************************************************
* DER encode an AlgorithmIdentifier *
*************************************************/
void AlgorithmIdentifier::encode_into(DER_Encoder& der) const
{
der.start_sequence()
.encode(oid)
.add_raw_octets(parameters)
.end_sequence();
}
/*************************************************
* 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);
}
namespace BER {
/*************************************************
* Decode a BER encoded AlgorithmIdentifier *
*************************************************/
void decode(BER_Decoder& source, AlgorithmIdentifier& alg_id)
{
BER_Decoder sequence = BER::get_subsequence(source);
BER::decode(sequence, alg_id.oid);
alg_id.parameters = sequence.get_remaining();
sequence.verify_end();
}
}
}
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