private IBlockCipherBuilder <TParamWithIV> DoCreateBlockCipherBuilder(bool forEncryption, TParamWithIV parameters)
{
if (CryptoServicesRegistrar.IsInApprovedOnlyMode())
{
throw new CryptoUnapprovedOperationError("attempt to create unapproved block cipher builder in approved only mode");
}
IBufferedCipher cipher = ProviderUtils.CreateBufferedCipher(name, parameters.Algorithm.Mode, parameters, forEncryption, engineProvider);
cipher.Init(forEncryption, ParametersWithIV.ApplyOptionalIV(null, parameters.GetIV()));
return(new BlockCipherBuilderImpl <TParamWithIV>(forEncryption, parameters, cipher));
}
