public X509Crl(
CertificateList c)
{
this.c = c;
try
{
this.sigAlgName = X509SignatureUtilities.GetSignatureName(c.SignatureAlgorithm);
if (c.SignatureAlgorithm.Parameters != null)
{
this.sigAlgParams = ((Asn1Encodable)c.SignatureAlgorithm.Parameters).GetDerEncoded();
}
else
{
this.sigAlgParams = null;
}
this.isIndirect = IsIndirectCrl;
}
catch (Exception e)
{
throw new CrlException("CRL contents invalid: " + e);
}
}
public virtual void Verify(AsymmetricKeyParameter key)
{
string signatureName = X509SignatureUtilities.GetSignatureName(c.SignatureAlgorithm);
ISigner signer = SignerUtilities.GetSigner(signatureName);
CheckSignature(key, signer);
}
protected virtual void CheckSignature(AsymmetricKeyParameter publicKey, ISigner signature)
{
if (!IsAlgIDEqual(c.SignatureAlgorithm, c.TbsCertificate.Signature))
{
throw new CertificateException("signature algorithm in TBS cert not same as outer cert");
}
Asn1Encodable parameters = c.SignatureAlgorithm.Parameters;
X509SignatureUtilities.SetSignatureParameters(signature, parameters);
signature.Init(forSigning: false, publicKey);
byte[] tbsCertificate = GetTbsCertificate();
signature.BlockUpdate(tbsCertificate, 0, tbsCertificate.Length);
byte[] signature2 = GetSignature();
if (!signature.VerifySignature(signature2))
{
throw new InvalidKeyException("Public key presented not for certificate signature");
}
}
internal static string GetSignatureName(AlgorithmIdentifier sigAlgId)
{
Asn1Encodable parameters = sigAlgId.Parameters;
if (parameters != null && !X509SignatureUtilities.derNull.Equals(parameters))
{
if (sigAlgId.ObjectID.Equals(PkcsObjectIdentifiers.IdRsassaPss))
{
RsassaPssParameters instance = RsassaPssParameters.GetInstance(parameters);
return(X509SignatureUtilities.GetDigestAlgName(instance.HashAlgorithm.ObjectID) + "withRSAandMGF1");
}
if (sigAlgId.ObjectID.Equals(X9ObjectIdentifiers.ECDsaWithSha2))
{
Asn1Sequence instance2 = Asn1Sequence.GetInstance(parameters);
return(X509SignatureUtilities.GetDigestAlgName((DerObjectIdentifier)instance2[0]) + "withECDSA");
}
}
return(sigAlgId.ObjectID.Id);
}
public X509Crl(
CertificateList c)
{
this.c = c;
try
{
this.sigAlgName = X509SignatureUtilities.GetSignatureName(c.SignatureAlgorithm);
Asn1Encodable parameters = c.SignatureAlgorithm.Parameters;
this.sigAlgParams = (null == parameters) ? null : parameters.GetEncoded(Asn1Encodable.Der);
this.isIndirect = IsIndirectCrl;
}
catch (Exception e)
{
throw new CrlException("CRL contents invalid: " + e);
}
}
public X509Crl(CertificateList c)
{
this.c = c;
try
{
sigAlgName = X509SignatureUtilities.GetSignatureName(c.SignatureAlgorithm);
if (c.SignatureAlgorithm.Parameters != null)
{
sigAlgParams = c.SignatureAlgorithm.Parameters.GetDerEncoded();
}
else
{
sigAlgParams = null;
}
isIndirect = IsIndirectCrl;
}
catch (global::System.Exception ex)
{
throw new CrlException(string.Concat((object)"CRL contents invalid: ", (object)ex));
}
}
public X509Crl(CertificateList c)
{
this.c = c;
try
{
sigAlgName = X509SignatureUtilities.GetSignatureName(c.SignatureAlgorithm);
if (c.SignatureAlgorithm.Parameters != null)
{
sigAlgParams = c.SignatureAlgorithm.Parameters.GetDerEncoded();
}
else
{
sigAlgParams = null;
}
isIndirect = IsIndirectCrl;
}
catch (Exception arg)
{
throw new CrlException("CRL contents invalid: " + arg);
IL_0073 :;
}
}
public X509Certificate(
X509CertificateStructure c)
{
this.c = c;
try
{
this.sigAlgName = X509SignatureUtilities.GetSignatureName(c.SignatureAlgorithm);
Asn1Encodable parameters = c.SignatureAlgorithm.Parameters;
this.sigAlgParams = (null == parameters) ? null : parameters.GetEncoded(Asn1Encodable.Der);
}
catch (Exception e)
{
throw new CrlException("Certificate contents invalid: " + e);
}
try
{
Asn1OctetString str = this.GetExtensionValue(new DerObjectIdentifier("2.5.29.19"));
if (str != null)
{
basicConstraints = BasicConstraints.GetInstance(
X509ExtensionUtilities.FromExtensionValue(str));
}
}
catch (Exception e)
{
throw new CertificateParsingException("cannot construct BasicConstraints: " + e);
}
try
{
Asn1OctetString str = this.GetExtensionValue(new DerObjectIdentifier("2.5.29.15"));
if (str != null)
{
DerBitString bits = DerBitString.GetInstance(
X509ExtensionUtilities.FromExtensionValue(str));
byte[] bytes = bits.GetBytes();
int length = (bytes.Length * 8) - bits.PadBits;
keyUsage = new bool[(length < 9) ? 9 : length];
for (int i = 0; i != length; i++)
{
// keyUsage[i] = (bytes[i / 8] & (0x80 >>> (i % 8))) != 0;
keyUsage[i] = (bytes[i / 8] & (0x80 >> (i % 8))) != 0;
}
}
else
{
keyUsage = null;
}
}
catch (Exception e)
{
throw new CertificateParsingException("cannot construct KeyUsage: " + e);
}
}
