private static byte[] GetPublicX(Asn1Object header)
{
var seq1 = header as Asn1Sequence;
if (seq1 != null && seq1.Count > 0)
{
var seq2 = seq1[0] as Asn1Sequence;
if (seq2 != null)
{
byte[] key = null;
if (seq2.Count == 5 || seq2.Count == 6)
{
key = Asn1Utils.ExtractOctets(seq2[seq2.Count - 1]);
}
else if (seq2.Count == 7)
{
key = Asn1Utils.ExtractOctets(seq2[5]);
}
if (key != null && key.Length == 8)
{
return(key);
}
}
}
throw new CryptographicException("Ошибка в данных header.key.");
}
public byte[] GetRawCertificate()
{
var header = Asn1Object.FromByteArray(Header);
var seq1 = header as Asn1Sequence;
if (seq1 != null && seq1.Count > 0)
{
var seq2 = seq1[0] as Asn1Sequence;
if (seq2 != null && seq2.Count >= 6)
{
return(Asn1Utils.ExtractOctets(seq2[4]));
}
}
throw new CryptographicException("Контейнер не содержит сертификата.");
}
private static DerObjectIdentifier GetAlgorithmId(Asn1Object header)
{
DerObjectIdentifier algId;
try {
algId = Asn1Utils.Goto(header, "0/2/1/1/0") as DerObjectIdentifier;
} catch (Asn1Exception e) {
throw new CryptographicException("Ошибка в данных header.key.", e);
}
if (algId != null)
{
return(algId);
}
throw new CryptographicException("Ошибка в данных header.key.");
}