| public static GetDigest ( String oid ) : String | ||
| oid | String | |
| Résultat | String | |
/**
* Creates an ExternalSignature instance
* @param pk a PrivateKey object
* @param hashAlgorithm the hash algorithm (e.g. "SHA-1", "SHA-256",...)
* @param provider the security provider (e.g. "BC")
*/
public PrivateKeySignature(ICipherParameters pk, String hashAlgorithm)
{
this.pk = pk;
this.hashAlgorithm = DigestAlgorithms.GetDigest(DigestAlgorithms.GetAllowedDigests(hashAlgorithm));
if (pk is RsaKeyParameters)
{
encryptionAlgorithm = "RSA";
}
else if (pk is DsaKeyParameters)
{
encryptionAlgorithm = "DSA";
}
else
{
throw new ArgumentException(MessageLocalization.GetComposedMessage("unknown.key.algorithm.1", pk.ToString()));
}
}
private AsymmetricAlgorithmSignature(AsymmetricAlgorithm algorithm, String hashAlgorithm)
{
this.algorithm = algorithm;
this.hashAlgorithm = DigestAlgorithms.GetDigest(DigestAlgorithms.GetAllowedDigests(hashAlgorithm));
if (algorithm is RSACryptoServiceProvider)
{
encryptionAlgorithm = "RSA";
}
else if (algorithm is DSACryptoServiceProvider)
{
encryptionAlgorithm = "DSA";
}
else
{
throw new ArgumentException("Not supported encryption algorithm " + algorithm);
}
}
/// <summary>
/// Creates a signature using a X509Certificate2. It supports smartcards without
/// exportable private keys.
/// </summary>
/// <param name="certificate">The certificate with the private key</param>
/// <param name="hashAlgorithm">The hash algorithm for the signature. As the Windows CAPI is used
/// to do the signature the only hash guaranteed to exist is SHA-1</param>
public X509Certificate2Signature(X509Certificate2 certificate, String hashAlgorithm)
{
if (!certificate.HasPrivateKey)
{
throw new ArgumentException("No private key.");
}
this.certificate = certificate;
this.hashAlgorithm = DigestAlgorithms.GetDigest(DigestAlgorithms.GetAllowedDigests(hashAlgorithm));
if (certificate.PrivateKey is RSACryptoServiceProvider)
{
encryptionAlgorithm = "RSA";
}
else if (certificate.PrivateKey is DSACryptoServiceProvider)
{
encryptionAlgorithm = "DSA";
}
else
{
throw new ArgumentException("Unknown encryption algorithm " + certificate.PrivateKey);
}
}
/**
* Returns the name of the digest algorithm, e.g. "SHA256".
* @return the digest algorithm name, e.g. "SHA256"
*/
public String GetHashAlgorithm()
{
return(DigestAlgorithms.GetDigest(digestAlgorithmOid));
}
