/// <summary>
/// Optionally initialises the Skein digest with the provided parameters.
/// </summary>
/// See <see cref="SkeinParameters"></see> for details on the parameterisation of the Skein hash function.
/// <param name="skeinParameters">the parameters to apply to this engine, or <code>null</code> to use no parameters.</param>
public void Init(SkeinParameters skeinParameters)
{
if (skeinParameters.GetKey() == null)
{
throw new ArgumentException("Skein MAC requires a key parameter.");
}
engine.Init(skeinParameters);
}
/// <summary>
/// Initialises the Skein engine with the provided parameters. See <see cref="SkeinParameters"/> for
/// details on the parameterisation of the Skein hash function.
/// </summary>
/// <param name="parameters">the parameters to apply to this engine, or <code>null</code> to use no parameters.</param>
public void Init(SkeinParameters parameters)
{
this.chain = null;
this.key = null;
this.preMessageParameters = null;
this.postMessageParameters = null;
if (parameters != null)
{
byte[] key = parameters.GetKey();
if (key.Length < 16)
{
throw new ArgumentException("Skein key must be at least 128 bits.");
}
InitParams(parameters.GetParameters());
}
CreateInitialState();
// Initialise message block
UbiInit(PARAM_TYPE_MESSAGE);
}