byte[] EncryptAsymmetricKeyParameter (AsymmetricKeyParameter key)
{
var cipher = PbeUtilities.CreateEngine (EncryptionAlgorithm.Id) as IBufferedCipher;
var keyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo (key);
var random = new SecureRandom ();
var salt = new byte[SaltSize];
if (cipher == null)
throw new Exception ("Unknown encryption algorithm: " + EncryptionAlgorithm.Id);
random.NextBytes (salt);
var pbeParameters = PbeUtilities.GenerateAlgorithmParameters (EncryptionAlgorithm.Id, salt, MinIterations);
var algorithm = new AlgorithmIdentifier (EncryptionAlgorithm, pbeParameters);
var cipherParameters = PbeUtilities.GenerateCipherParameters (algorithm, passwd);
if (cipherParameters == null)
throw new Exception ("BouncyCastle bug detected: Failed to generate cipher parameters.");
cipher.Init (true, cipherParameters);
var encoded = cipher.DoFinal (keyInfo.GetEncoded ());
var encrypted = new EncryptedPrivateKeyInfo (algorithm, encoded);
return encrypted.GetEncoded ();
}
