public void ComputeSignature()
{
SignedXmlDebugLog.LogBeginSignatureComputation(this, _context);
BuildDigestedReferences();
// Load the key
AsymmetricAlgorithm key = SigningKey;
if (key == null)
{
throw new CryptographicException(SR.Cryptography_Xml_LoadKeyFailed);
}
// Check the signature algorithm associated with the key so that we can accordingly set the signature method
if (SignedInfo.SignatureMethod == null)
{
if (key is DSA)
{
SignedInfo.SignatureMethod = XmlDsigDSAUrl;
}
else if (key is RSA)
{
// Default to RSA-SHA256
if (SignedInfo.SignatureMethod == null)
{
SignedInfo.SignatureMethod = XmlDsigRSASHA256Url;
}
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_CreatedKeyFailed);
}
}
// See if there is a signature description class defined in the Config file
SignatureDescription signatureDescription = CryptoHelpers.CreateFromName <SignatureDescription>(SignedInfo.SignatureMethod);
if (signatureDescription == null)
{
throw new CryptographicException(SR.Cryptography_Xml_SignatureDescriptionNotCreated);
}
HashAlgorithm hashAlg = signatureDescription.CreateDigest();
if (hashAlg == null)
{
throw new CryptographicException(SR.Cryptography_Xml_CreateHashAlgorithmFailed);
}
// Updates the HashAlgorithm's state for signing with the signature formatter below.
// The return value is not needed.
GetC14NDigest(hashAlg);
AsymmetricSignatureFormatter asymmetricSignatureFormatter = signatureDescription.CreateFormatter(key);
SignedXmlDebugLog.LogSigning(this, key, signatureDescription, hashAlg, asymmetricSignatureFormatter);
m_signature.SignatureValue = asymmetricSignatureFormatter.CreateSignature(hashAlg);
}
public void ComputeSignature()
{
SignedXmlDebugLog.LogBeginSignatureComputation(this, m_context);
BuildDigestedReferences();
// Load the key
AsymmetricAlgorithm key = SigningKey;
if (key == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_LoadKeyFailed"));
}
// Check the signature algorithm associated with the key so that we can accordingly set the signature method
if (SignedInfo.SignatureMethod == null)
{
if (key is DSA)
{
SignedInfo.SignatureMethod = XmlDsigDSAUrl;
}
else if (key is RSA)
{
// Default to RSA-SHA1
if (SignedInfo.SignatureMethod == null)
{
SignedInfo.SignatureMethod = XmlDsigRSASHA1Url;
}
}
else
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_CreatedKeyFailed"));
}
}
// See if there is a signature description class defined in the Config file
SignatureDescription signatureDescription = CryptoConfig.CreateFromName(SignedInfo.SignatureMethod) as SignatureDescription;
if (signatureDescription == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_SignatureDescriptionNotCreated"));
}
HashAlgorithm hashAlg = signatureDescription.CreateDigest();
if (hashAlg == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_CreateHashAlgorithmFailed"));
}
byte[] hashvalue = GetC14NDigest(hashAlg);
AsymmetricSignatureFormatter asymmetricSignatureFormatter = signatureDescription.CreateFormatter(key);
SignedXmlDebugLog.LogSigning(this, key, signatureDescription, hashAlg, asymmetricSignatureFormatter);
m_signature.SignatureValue = asymmetricSignatureFormatter.CreateSignature(hashAlg);
}
public void ComputeSignature()
{
SignedXmlDebugLog.LogBeginSignatureComputation(this, this.m_context);
this.BuildDigestedReferences();
AsymmetricAlgorithm signingKey = this.SigningKey;
if (signingKey == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_LoadKeyFailed"));
}
if (this.SignedInfo.SignatureMethod == null)
{
if (!(signingKey is DSA))
{
if (!(signingKey is RSA))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_CreatedKeyFailed"));
}
if (this.SignedInfo.SignatureMethod == null)
{
this.SignedInfo.SignatureMethod = "http://www.w3.org/2000/09/xmldsig#rsa-sha1";
}
}
else
{
this.SignedInfo.SignatureMethod = "http://www.w3.org/2000/09/xmldsig#dsa-sha1";
}
}
SignatureDescription signatureDescription = CryptoConfig.CreateFromName(this.SignedInfo.SignatureMethod) as SignatureDescription;
if (signatureDescription == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_SignatureDescriptionNotCreated"));
}
HashAlgorithm hash = signatureDescription.CreateDigest();
if (hash == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_CreateHashAlgorithmFailed"));
}
this.GetC14NDigest(hash);
AsymmetricSignatureFormatter asymmetricSignatureFormatter = signatureDescription.CreateFormatter(signingKey);
SignedXmlDebugLog.LogSigning(this, signingKey, signatureDescription, hash, asymmetricSignatureFormatter);
this.m_signature.SignatureValue = asymmetricSignatureFormatter.CreateSignature(hash);
}