/// <summary>
/// Generates and saves relinearization keys to an output stream.
/// </summary>
/// <remarks>
/// Half of the polynomials in relinearization keys are randomly generated
/// and are replaced with the seed used to compress output size. The output
/// is in binary format and not human-readable. The output stream must have
/// the "binary" flag set.
/// </remarks>
/// <param name="stream">The stream to save the relinearization keys to</param>
/// <param name="comprMode">The desired compression mode</param>
public long RelinKeysSave(Stream stream, ComprModeType?comprMode = null)
{
NativeMethods.KeyGenerator_RelinKeys(NativePtr, true, out IntPtr relinKeysPtr);
using (RelinKeys relinKeys = new RelinKeys(relinKeysPtr))
{
return(relinKeys.Save(stream, comprMode));
}
}
/// <summary>
/// Generates and saves relinearization keys to an output stream.
/// </summary>
/// <remarks>
/// Half of the polynomials in relinearization keys are randomly generated
/// and are replaced with the seed used to compress output size. The output
/// is in binary format and not human-readable. The output stream must have
/// the "binary" flag set.
/// </remarks>
/// <param name="stream">The stream to save the relinearization keys to</param>
/// <param name="comprMode">The desired compression mode</param>
/// <exception cref="ArgumentNullException">if stream is null</exception>
/// <exception cref="InvalidOperationException">if the encryption
/// parameters do not support keyswitching</exception>
/// <exception cref="ArgumentException">if the stream is closed or does not
/// support writing</exception>
/// <exception cref="IOException">if I/O operations failed</exception>
/// <exception cref="InvalidOperationException">if compression mode is not
/// supported, or if compression failed</exception>
public long RelinKeysSave(Stream stream, ComprModeType?comprMode = null)
{
if (null == stream)
{
throw new ArgumentNullException(nameof(stream));
}
if (!UsingKeyswitching())
{
throw new InvalidOperationException("Encryption parameters do not support keyswitching");
}
comprMode = comprMode ?? Serialization.ComprModeDefault;
if (!Serialization.IsSupportedComprMode(comprMode.Value))
{
throw new InvalidOperationException("Unsupported compression mode");
}
NativeMethods.KeyGenerator_RelinKeys(NativePtr, true, out IntPtr relinKeysPtr);
using (RelinKeys relinKeys = new RelinKeys(relinKeysPtr))
{
return(relinKeys.Save(stream, comprMode));
}
}