AuthenticatedDataParser
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Cms
{
public class AuthenticatedDataParser
{
private Asn1SequenceParser seq;
private DerInteger version;
private IAsn1Convertible nextObject;
private bool originatorInfoCalled;
public DerInteger Version => version;
public AuthenticatedDataParser(Asn1SequenceParser seq)
{
this.seq = seq;
version = (DerInteger)seq.ReadObject();
}
public OriginatorInfo GetOriginatorInfo()
{
originatorInfoCalled = true;
if (nextObject == null)
nextObject = seq.ReadObject();
Asn1TaggedObjectParser asn1TaggedObjectParser = nextObject as Asn1TaggedObjectParser;
if (asn1TaggedObjectParser != null && asn1TaggedObjectParser.HasContextTag(0)) {
Asn1SequenceParser obj = (Asn1SequenceParser)asn1TaggedObjectParser.ParseBaseUniversal(false, 16);
nextObject = null;
return OriginatorInfo.GetInstance(obj.ToAsn1Object());
}
return null;
}
public Asn1SetParser GetRecipientInfos()
{
if (!originatorInfoCalled)
GetOriginatorInfo();
if (nextObject == null)
nextObject = seq.ReadObject();
Asn1SetParser result = (Asn1SetParser)nextObject;
nextObject = null;
return result;
}
public AlgorithmIdentifier GetMacAlgorithm()
{
if (nextObject == null)
nextObject = seq.ReadObject();
if (nextObject != null) {
Asn1SequenceParser obj = (Asn1SequenceParser)nextObject;
nextObject = null;
return AlgorithmIdentifier.GetInstance(obj.ToAsn1Object());
}
return null;
}
public AlgorithmIdentifier GetDigestAlgorithm()
{
if (nextObject == null)
nextObject = seq.ReadObject();
if (nextObject is Asn1TaggedObjectParser) {
AlgorithmIdentifier instance = AlgorithmIdentifier.GetInstance((Asn1TaggedObject)nextObject.ToAsn1Object(), false);
nextObject = null;
return instance;
}
return null;
}
public ContentInfoParser GetEnapsulatedContentInfo()
{
if (nextObject == null)
nextObject = seq.ReadObject();
if (nextObject != null) {
Asn1SequenceParser obj = (Asn1SequenceParser)nextObject;
nextObject = null;
return new ContentInfoParser(obj);
}
return null;
}
public Asn1SetParser GetAuthAttrs()
{
if (nextObject == null)
nextObject = seq.ReadObject();
Asn1TaggedObjectParser asn1TaggedObjectParser = nextObject as Asn1TaggedObjectParser;
if (asn1TaggedObjectParser != null) {
nextObject = null;
return (Asn1SetParser)Asn1Utilities.ParseContextBaseUniversal(asn1TaggedObjectParser, 2, false, 17);
}
return null;
}
public Asn1OctetString GetMac()
{
if (nextObject == null)
nextObject = seq.ReadObject();
IAsn1Convertible asn1Convertible = nextObject;
nextObject = null;
return Asn1OctetString.GetInstance(asn1Convertible.ToAsn1Object());
}
public Asn1SetParser GetUnauthAttrs()
{
if (nextObject == null)
nextObject = seq.ReadObject();
if (nextObject != null) {
Asn1TaggedObject taggedObjectParser = (Asn1TaggedObject)nextObject;
nextObject = null;
return (Asn1SetParser)Asn1Utilities.ParseContextBaseUniversal(taggedObjectParser, 3, false, 17);
}
return null;
}
}
}