/**
* Return the byte encoding of the signature section.
* @return uninterpreted signature bytes.
*/
public byte[] GetSignatureBytes()
{
if (signatureEncoding != null)
{
return((byte[])signatureEncoding.Clone());
}
MemoryStream bOut = new MemoryStream();
BcpgOutputStream bcOut = new BcpgOutputStream(bOut);
foreach (MPInteger sigObj in signature)
{
try
{
bcOut.WriteObject(sigObj);
}
catch (IOException e)
{
throw new Exception("internal error: " + e);
}
}
return(bOut.ToArray());
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WriteObjects(d, p, q, u);
}
/// <summary>
/// Computes the hash value of the specified input stream using the specified
/// hash algorithm, and signs the resulting hash value.
/// </summary>
/// <param name="inputStream">The input data for which to compute the hash.</param>
/// <param name="rsaProvider">The RSA crypto service provider.</param>
/// <param name="keyID">The unique key id of the public secret key pair.</param>
/// <param name="hashAlgorithm">The hash algorithm to use to create the hash value.</param>
/// <returns>The signature for the specified data.</returns>
public byte[] SignData(Stream inputStream, RSACryptoServiceProvider rsaProvider, long keyID, Nequeo.Cryptography.HashcodeType hashAlgorithm = HashcodeType.SHA512)
{
MemoryStream output = null;
Key.Bcpg.BcpgOutputStream pgpOutput = null;
try
{
int ch;
output = new MemoryStream();
// Export the signer private key parameters.
RSAParameters rsaPrivateKeySignerParam = rsaProvider.ExportParameters(true);
Key.Crypto.Parameters.RsaPrivateCrtKeyParameters rsaPrivateKeySigner =
new Key.Crypto.Parameters.RsaPrivateCrtKeyParameters(
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.Modulus),
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.Exponent),
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.D),
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.P),
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.Q),
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.DP),
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.DQ),
new Key.Math.BigInteger(1, rsaPrivateKeySignerParam.InverseQ)
);
// Get the private key.
Key.Bcpg.OpenPgp.PgpPrivateKey privateKey = new Key.Bcpg.OpenPgp.PgpPrivateKey(rsaPrivateKeySigner, keyID);
// Create a signature generator.
Key.Bcpg.OpenPgp.PgpSignatureGenerator signatureGenerator =
new Key.Bcpg.OpenPgp.PgpSignatureGenerator(Key.Bcpg.PublicKeyAlgorithmTag.RsaGeneral, GetHashAlgorithm(hashAlgorithm));
signatureGenerator.InitSign(Key.Bcpg.OpenPgp.PgpSignature.BinaryDocument, privateKey);
// Create the output stream.
pgpOutput = new Key.Bcpg.BcpgOutputStream(output);
// Read the input stream.
while ((ch = inputStream.ReadByte()) >= 0)
{
// Update the generator.
signatureGenerator.Update((byte)ch);
}
// Write the hash to the output stream.
Key.Bcpg.OpenPgp.PgpSignature signature = signatureGenerator.Generate();
signature.Encode(pgpOutput);
// Return the signed value.
return(output.ToArray());
}
catch (Exception)
{
throw;
}
finally
{
if (output != null)
{
output.Close();
}
if (pgpOutput != null)
{
pgpOutput.Close();
}
}
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WriteObject(x);
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WritePacket(tag, contents, true);
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WritePacket(PacketTag.ModificationDetectionCode, digest, false);
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WritePacket(PacketTag.Marker, marker, true);
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WritePacket(PacketTag.PublicSubkey, GetEncodedContents(), true);
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WritePacket(PacketTag.Trust, levelAndTrustAmount, true);
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WriteShort((short)val.BitLength);
bcpgOut.Write(val.ToByteArrayUnsigned());
}
public abstract void Encode(BcpgOutputStream bcpgOut);
public override void Encode(
BcpgOutputStream bcpgOut)
{
bcpgOut.WritePacket(PacketTag.UserId, idData, true);
}
