private void CreateInitialState()
{
ulong[] array = (ulong[])SkeinEngine.INITIAL_STATES[SkeinEngine.VariantIdentifier(this.BlockSize, this.OutputSize)];
if (this.key == null && array != null)
{
this.chain = Arrays.Clone(array);
}
else
{
this.chain = new ulong[this.BlockSize / 8];
if (this.key != null)
{
this.UbiComplete(0, this.key);
}
this.UbiComplete(4, new SkeinEngine.Configuration((long)(this.outputSizeBytes * 8)).Bytes);
}
if (this.preMessageParameters != null)
{
for (int i = 0; i < this.preMessageParameters.Length; i++)
{
SkeinEngine.Parameter parameter = this.preMessageParameters[i];
this.UbiComplete(parameter.Type, parameter.Value);
}
}
this.initialState = Arrays.Clone(this.chain);
}
public int DoFinal(byte[] outBytes, int outOff)
{
this.CheckInitialised();
if (outBytes.Length < outOff + this.outputSizeBytes)
{
throw new DataLengthException("Output buffer is too short to hold output of " + this.outputSizeBytes + " bytes");
}
this.UbiFinal();
if (this.postMessageParameters != null)
{
for (int i = 0; i < this.postMessageParameters.Length; i++)
{
SkeinEngine.Parameter parameter = this.postMessageParameters[i];
this.UbiComplete(parameter.Type, parameter.Value);
}
}
int blockSize = this.BlockSize;
int num = (this.outputSizeBytes + blockSize - 1) / blockSize;
for (int j = 0; j < num; j++)
{
int outputBytes = Math.Min(blockSize, this.outputSizeBytes - j * blockSize);
this.Output((ulong)((long)j), outBytes, outOff + j * blockSize, outputBytes);
}
this.Reset();
return(this.outputSizeBytes);
}
private static SkeinEngine.Parameter[] Clone(SkeinEngine.Parameter[] data, SkeinEngine.Parameter[] existing)
{
if (data == null)
{
return(null);
}
if (existing == null || existing.Length != data.Length)
{
existing = new SkeinEngine.Parameter[data.Length];
}
Array.Copy(data, 0, existing, 0, existing.Length);
return(existing);
}