/// <summary>
/// Gets the signing stream.
/// </summary>
/// <returns></returns>
public HashingStream GetSigningStream(Keyczar keyczar)
{
var signer = PublicKey.GetSigner();
signer.Init(forSigning: true, parameters: new RsaPrivateCrtKeyParameters(
Utility.ToBouncyBigInteger(PublicKey.Modulus),
Utility.ToBouncyBigInteger(PublicKey.PublicExponent),
PrivateExponent.ToBouncyBigInteger(),
PrimeP.ToBouncyBigInteger(),
PrimeQ.ToBouncyBigInteger(),
PrimeExponentP.ToBouncyBigInteger(),
PrimeExponentQ.ToBouncyBigInteger(),
CrtCoefficient.ToBouncyBigInteger()));
return(new DigestStream(signer, Size / 8));
}
/// <summary>
/// Gets the decrypting stream.
/// </summary>
/// <param name="output">The output.</param>
/// <returns></returns>
public FinishingStream GetDecryptingStream(Stream output, Keyczar keyczar)
{
var rsa = new RsaEngine();
var oaep = PublicKey.UpdatePadding(rsa);
return(new AsymmetricStream(oaep, output,
(cipher, encrypt) => cipher.Init(encrypt, new RsaPrivateCrtKeyParameters(
PublicKey.Modulus
.ToBouncyBigInteger(),
PublicKey.PublicExponent
.ToBouncyBigInteger(),
PrivateExponent.ToBouncyBigInteger
(),
PrimeP.ToBouncyBigInteger(),
PrimeQ.ToBouncyBigInteger(),
PrimeExponentP.ToBouncyBigInteger(),
PrimeExponentQ.ToBouncyBigInteger(),
CrtCoefficient.ToBouncyBigInteger())),
encrypt: false));
}
