//public Rfc3171Accuracy_ Accuracy { get; private set; }
//public ReadOnlyMemory<byte> Ordering { get; private set; }
//public ReadOnlyMemory<byte> Nonce { get; private set; }
//public ReadOnlyMemory<byte> Tsa { get; private set; }
//public ReadOnlyMemory<byte> Extensions { get; private set; }
public static Rfc3161TstInfo From(EncapsulatedContentInfo content)
{
/* EncapsulatedContentInfo ::= SEQUENCE {
* eContentType ContentType,
* eContent [0] EXPLICIT OCTET STRING OPTIONAL } */
// note: the content field is read with ReadEncodedValue
// because it would fail with ReadOctetString when reading the *.p7s.
// just unwrap OCTET STRING node, [0] OPTIONAL is already stripped inside EncapsulatedContentInfo
var reader = new AsnReader(content.Content, AsnEncodingRules.DER);
var data = reader.ReadOctetString();
return(Decode(data));
}
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,
});
}