public PbeS2Parameters(
Asn1Sequence seq)
{
if (seq.Count != 2)
throw new ArgumentException("Wrong number of elements in sequence", "seq");
Asn1Sequence funcSeq = (Asn1Sequence)seq[0].ToAsn1Object();
// TODO Not sure if this special case is really necessary/appropriate
if (funcSeq[0].Equals(PkcsObjectIdentifiers.IdPbkdf2))
{
func = new KeyDerivationFunc(PkcsObjectIdentifiers.IdPbkdf2,
Pbkdf2Params.GetInstance(funcSeq[1]));
}
else
{
func = new KeyDerivationFunc(funcSeq);
}
scheme = EncryptionScheme.GetInstance(seq[1].ToAsn1Object());
}