internal SignerInformation(Org.BouncyCastle.Asn1.Cms.SignerInfo info, DerObjectIdentifier contentType, CmsProcessable content, IDigestCalculator digestCalculator)
{
this.info = info;
this.sid = new SignerID();
this.contentType = contentType;
this.isCounterSignature = (contentType == null);
try
{
SignerIdentifier signerID = info.SignerID;
if (signerID.IsTagged)
{
Asn1OctetString instance = Asn1OctetString.GetInstance(signerID.ID);
this.sid.SubjectKeyIdentifier = instance.GetEncoded();
}
else
{
Org.BouncyCastle.Asn1.Cms.IssuerAndSerialNumber instance2 = Org.BouncyCastle.Asn1.Cms.IssuerAndSerialNumber.GetInstance(signerID.ID);
this.sid.Issuer = instance2.Name;
this.sid.SerialNumber = instance2.SerialNumber.Value;
}
}
catch (IOException)
{
throw new ArgumentException("invalid sid in SignerInfo");
}
this.digestAlgorithm = info.DigestAlgorithm;
this.signedAttributeSet = info.AuthenticatedAttributes;
this.unsignedAttributeSet = info.UnauthenticatedAttributes;
this.encryptionAlgorithm = info.DigestEncryptionAlgorithm;
this.signature = info.EncryptedDigest.GetOctets();
this.content = content;
this.digestCalculator = digestCalculator;
}
internal SignerInformation(
Asn1.Cms.SignerInfo info,
DerObjectIdentifier contentType,
ICmsTypedData content,
byte[] digest)
{
this.info = info;
this.contentType = contentType;
this.isCounterSignature = contentType == null;
try
{
SignerIdentifier s = info.SignerID;
if (s.IsTagged)
{
Asn1OctetString octs = Asn1OctetString.GetInstance(s.ID);
this.sid = new SignerID(octs.GetEncoded());
}
else
{
Asn1.Cms.IssuerAndSerialNumber iAnds =
Asn1.Cms.IssuerAndSerialNumber.GetInstance(s.ID);
this.sid = new SignerID(iAnds.Name, iAnds.SerialNumber.Value);
}
}
catch (IOException)
{
throw new ArgumentException("invalid sid in SignerInfo");
}
this.digestAlgorithm = info.DigestAlgorithm;
this.signedAttributeSet = info.AuthenticatedAttributes;
this.unsignedAttributeSet = info.UnauthenticatedAttributes;
this.encryptionAlgorithm = info.DigestEncryptionAlgorithm;
this.signature = info.EncryptedDigest.GetOctets();
this.content = content;
this.resultDigest = digest;
}
private bool MatchExtension(
byte[] b,
X509Certificate c,
DerObjectIdentifier oid)
{
if (b == null)
{
return(true);
}
Asn1OctetString extVal = c.GetExtensionValue(oid);
if (extVal == null)
{
return(false);
}
return(extVal != null && Arrays.AreEqual(b, extVal.GetEncoded()));
}