public Asn1SignatureFactory(string algorithm, AsymmetricKeyParameter privateKey, SecureRandom random)
{
DerObjectIdentifier algorithmOid = X509Utilities.GetAlgorithmOid(algorithm);
this.algorithm = algorithm;
this.privateKey = privateKey;
this.random = random;
algID = X509Utilities.GetSigAlgID(algorithmOid, algorithm);
}
/// <summary>
/// Set the signature algorithm that will be used to sign this certificate.
/// </summary>
/// <param name="signatureAlgorithm">Name of the signature algorithm</param>
public void SetSignatureAlgorithm(string signatureAlgorithm)
{
this.signatureAlgorithm = signatureAlgorithm;
try
{
sigOid = X509Utilities.GetAlgorithmOid(signatureAlgorithm);
}
catch (Exception)
{
throw new ArgumentException("Unknown signature type requested: " + signatureAlgorithm);
}
sigAlgId = X509Utilities.GetSigAlgID(sigOid, signatureAlgorithm);
tbsGen.SetSignature(sigAlgId);
}