/// <inheritdoc />
public override void NextBytes(
byte[] buffer,
int offset,
int count)
{
lock (this) {
_csRng.NextBytes(buffer, offset, count);
var maxWindow = Math.Min(count, _maxWindowSize);
var windowOffset = _csRng.Next(maxWindow + 1);
var windowSize = _csRng.Next(count - windowOffset);
Array.Reverse(buffer, offset + windowOffset, windowSize);
}
}
/**
* add the pad bytes to the passed in block, returning the
* number of bytes added.
*/
public int AddPadding(
byte[] input,
int inOff)
{
byte code = (byte)(input.Length - inOff);
while (inOff < (input.Length - 1))
{
input[inOff] = (byte)_random.Next();
inOff++;
}
input[inOff] = code;
return(code);
}
/**
* add the pad bytes to the passed in block, returning the
* number of bytes added.
*/
public int AddPadding(
byte[] input,
int inOff)
{
byte code = (byte)(input.Length - inOff);
while (inOff < input.Length - 1)
{
if (random == null)
{
input[inOff] = 0;
}
else
{
input[inOff] = (byte)random.Next();
}
inOff++;
}
input[inOff] = code;
return(code);
}
