/// <summary>
/// Creates a IntegerEncoder object. The constructor takes as input a pointer to
/// a SEALContext object which contains the plaintext modulus.
/// </summary>
/// <param name="context">The SEALContext</param>
/// <exception cref="ArgumentNullException">if context is null</exception>
/// <exception cref="ArgumentException">if the context is not set</exception>
/// <exception cref="ArgumentException">if the PlainModulus set in context is not
/// at least 2</exception>
public IntegerEncoder(SEALContext context)
{
if (null == context)
{
throw new ArgumentNullException(nameof(context));
}
if (!context.ParametersSet)
{
throw new ArgumentException("Encryption parameters are not set correctly");
}
SEALContext.ContextData contextData = context.FirstContextData;
if (contextData.Parms.Scheme != SchemeType.BFV)
{
throw new ArgumentException("Unsupported scheme");
}
NativeMethods.IntegerEncoder_Create(context.NativePtr, out IntPtr encoderPtr);
NativePtr = encoderPtr;
}
/// <summary>
/// Creates a BatchEncoder. It is necessary that the encryption parameters
/// given through the SEALContext object support batching.
/// </summary>
/// <param name="context">The SEALContext</param>
/// @param[in] context
/// <exception cref="ArgumentNullException">if context is null.</exception>
/// <exception cref="ArgumentException">if the context is not set or encryption
/// parameters are not valid for batching</exception>
/// <exception cref="ArgumentException">if scheme is not SchemeType.BFV</exception>
public BatchEncoder(SEALContext context)
{
if (null == context)
{
throw new ArgumentNullException(nameof(context));
}
if (!context.ParametersSet)
{
throw new ArgumentException("Encryption parameters are not set correctly");
}
SEALContext.ContextData contextData = context.FirstContextData;
if (contextData.Parms.Scheme != SchemeType.BFV)
{
throw new ArgumentException("Unsupported scheme");
}
if (!contextData.Qualifiers.UsingBatching)
{
throw new ArgumentException("Encryption parameters are not valid for batching");
}
NativeMethods.BatchEncoder_Create(context.NativePtr, out IntPtr ptr);
NativePtr = ptr;
}
