public override void Decode(Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
{
var elemLength = explicitTagging ? MatchTag(buffer, Asn1Tag.Sequence) : implicitLength;
Init();
var context = new Asn1BerDecodeContext(buffer, elemLength);
var parsedLen = new IntHolder();
if (!context.MatchElemTag(0, 0, 6, parsedLen, false))
{
throw ExceptionUtility.CryptographicException(Resources.Asn1MissingRequiredException, buffer.ByteCount);
}
Algorithm = new Asn1ObjectIdentifier();
Algorithm.Decode(buffer, true, parsedLen.Value);
if (!context.Expired())
{
Parameters = new Asn1OpenType();
Parameters.Decode(buffer, true, 0);
}
CheckTc(true);
}
public virtual void Encode(Asn1Type type, bool explicitTagging)
{
type.Encode(this, explicitTagging);
}
public virtual void Encode(Asn1Type type, bool explicitTagging)
{
type.Encode(this, explicitTagging);
}
public override void Encode(Asn1Type type, bool explicitTagging)
{
type.Encode(this, explicitTagging);
}
public AlgorithmId(Asn1ObjectIdentifier id, Asn1Type type)
{
Id = id;
Type = type;
}
public override void Encode(Asn1Type type, bool explicitTagging)
{
type.Encode(this, explicitTagging);
}
public virtual void SetElement(int choiceId, Asn1Type element)
{
_choiceId = choiceId;
Element = element;
}
public virtual void SetElement(int choiceId, Asn1Type element)
{
_choiceId = choiceId;
Element = element;
}
private void CheckTc(bool decode)
{
AlgorithmId algorithmId = null;
foreach (var alg in PkiConstants.SupportedAlgorithms)
{
if (alg.Id.Equals(Algorithm))
{
algorithmId = alg;
break;
}
}
if ((algorithmId != null) && ((decode && (Parameters != null)) && (algorithmId.Type != null)))
{
try
{
var buffer = new Asn1BerDecodeBuffer(((Asn1OpenType)Parameters).Value);
Parameters = (Asn1Type)Activator.CreateInstance(algorithmId.Type.GetType());
Parameters.Decode(buffer, true, 0);
buffer.InvokeEndElement("parameters", -1);
}
catch (Exception exception)
{
Asn1Util.WriteStackTrace(exception, Console.Error);
throw ExceptionUtility.CryptographicException(Resources.Asn1TableConstraint);
}
}
}
public AlgorithmIdentifier(Asn1ObjectIdentifier algorithm, Asn1OpenType parameters)
{
Algorithm = algorithm;
Parameters = parameters;
}
private void Init()
{
Algorithm = null;
Parameters = null;
}
