/// <summary>Create a generator for the passed in keyAlgorithm and hashAlgorithm codes.</summary>
public PgpV3SignatureGenerator(
PublicKeyAlgorithmTag keyAlgorithm,
HashAlgorithmTag hashAlgorithm)
{
this.keyAlgorithm = keyAlgorithm;
this.hashAlgorithm = hashAlgorithm;
dig = DigestUtilities.GetDigest(PgpUtilities.GetDigestName(hashAlgorithm));
sig = SignerUtilities.GetSigner(PgpUtilities.GetSignatureName(keyAlgorithm, hashAlgorithm));
}
/// <summary>Initialise the signature object for verification.</summary>
public void InitVerify(
PgpPublicKey pubKey)
{
lastb = 0;
try
{
sig = SignerUtilities.GetSigner(
PgpUtilities.GetSignatureName(sigPack.KeyAlgorithm, sigPack.HashAlgorithm));
}
catch (Exception e)
{
throw new PgpException("can't set up signature object.", e);
}
try
{
sig.Init(false, pubKey.GetKey());
}
catch (InvalidKeyException e)
{
throw new PgpException("invalid key.", e);
}
}
private void GetSig()
{
this.sig = SignerUtilities.GetSigner(
PgpUtilities.GetSignatureName(sigPck.KeyAlgorithm, sigPck.HashAlgorithm));
}