public static CertificateChoices Decode(AsnReader reader, bool validateEmpty = false)
{
// The CertificateChoices type gives either
// - a PKCS #6 extended certificate [PKCS#6],
// - an X.509 certificate,
// - a version 1 X.509 attribute certificate (ACv1) [X.509-97],
// - a version 2 X.509 attribute certificate (ACv2) [X.509-00],
// - or any other certificate format.
/* CertificateChoices ::= CHOICE {
* certificate Certificate,
* extendedCertificate [0] IMPLICIT ExtendedCertificate, -- Obsolete
* v1AttrCert [1] IMPLICIT AttributeCertificateV1, -- Obsolete
* v2AttrCert [2] IMPLICIT AttributeCertificateV2,
* other [3] IMPLICIT OtherCertificateFormat } */
var tag = reader.PeekTag();
if (tag == Asn1Tag.Sequence)
{
var result = new CertificateChoices()
{
Certificate = Certificate.Decode(reader),
};
if (validateEmpty)
{
reader.ThrowIfNotEmpty();
}
return(result);
}
throw new NotImplementedException("CertificateChoices");
}
public static SignedData Decode(AsnReader reader)
{
/* SignedData ::= SEQUENCE {
* version CMSVersion,
* digestAlgorithms DigestAlgorithmIdentifiers,
* encapContentInfo EncapsulatedContentInfo,
* certificates [0] IMPLICIT CertificateSet OPTIONAL,
* crls [1] IMPLICIT RevocationInfoChoices OPTIONAL,
* signerInfos SignerInfos }*/
var sequence = reader.ReadSequence();
// version CMSVersion,
if (!sequence.TryReadInt32(out var version))
{
sequence.ThrowIfNotEmpty();
}
// digestAlgorithms DigestAlgorithmIdentifiers
// DigestAlgorithmIdentifiers ::= SET OF DigestAlgorithmIdentifier
var digestAlgorithms = sequence.ReadSetOf(set => AlgorithmIdentifier.Decode(set));
// encapContentInfo EncapsulatedContentInfo
var encapContentInfo = EncapsulatedContentInfo.Decode(sequence);
// certificates [0] IMPLICIT CertificateSet OPTIONAL,
var certificates = sequence.ReadOptionalSetOf(0, set => CertificateChoices.Decode(set));
// crls [1] IMPLICIT RevocationInfoChoices OPTIONAL,
var crls = sequence.ReadOptionalSetOf(1, set => set.ReadEncodedValue());
// signerInfos SignerInfos
// SignerInfos ::= SET OF SignerInfo
var signerInfos = sequence.ReadSetOf(set => SignerInfo.Decode(set));
sequence.ThrowIfNotEmpty();
return(new()
{
Version = version,
DigestAlgorithms = digestAlgorithms,
EncapContentInfo = encapContentInfo,
Certificates = certificates,
Crls = crls,
SignerInfos = signerInfos,
});
}
