public override int Encode(Asn1BerEncodeBuffer buffer, bool explicitTagging)
{
int _aal = 0, len;
switch (ChoiceId)
{
// encode null_
case _NULL_:
NULLParams null_ = (NULLParams)GetElement();
len = null_.Encode(buffer, true);
_aal += len;
break;
// encode params_
case _PARAMS_:
GostR3410_2012_PublicKeyParameters params_ = (GostR3410_2012_PublicKeyParameters)GetElement();
len = params_.Encode(buffer, true);
_aal += len;
break;
default:
throw new Exception("Asn1InvalidChoiceOptionException()");
}
return(_aal);
}
/// <summary>
/// Упаковка открытого ключа ГОСТ 34.10-2012 512 и его параметров в Asn1c структуру.
/// </summary>
///
/// <param name="pub">Открытый ключ.</param>
///
/// <returns>Asn1c структура <c>SubjectPublicKeyInfo</c> открытого
/// ключа.</returns>
private static SubjectPublicKeyInfo PackPublicKeyInfo2012_512(
Gost3410CspObject pub)
{
SubjectPublicKeyInfo spki = new SubjectPublicKeyInfo();
Asn1BerEncodeBuffer buffer = new Asn1BerEncodeBuffer();
Asn1OctetString publicKey = new Asn1OctetString(pub._publicKey);
publicKey.Encode(buffer);
byte[] octetString = buffer.MsgCopy;
spki.subjectPublicKey = new Asn1BitString(
octetString.Length * 8, octetString);
GostR3410_2012_PublicKeyParameters par =
new GostR3410_2012_PublicKeyParameters();
par.publicKeyParamSet = fromString(pub._publicKeyParamSet);
par.digestParamSet = fromString(pub._digestParamSet);
par.encryptionParamSet = CreateGost28147_89_ParamSet(
pub._encryptionParamSet);
buffer.Reset();
par.Encode(buffer);
spki.algorithm = new AlgorithmIdentifier(
fromString(GostConstants.OID_CP_GOST_R3410_12_512),
new Asn1OpenType(buffer.MsgCopy));
return(spki);
}