private void Update(byte[] providedData)
{
var data = Concat(v, 0, providedData);
key = HMAC512.ComputeHash(key, data);
v = HMAC512.ComputeHash(key, v);
if (providedData != null)
{
data = Concat(v, 0x01, providedData);
key = HMAC512.ComputeHash(key, data);
v = HMAC512.ComputeHash(key, v);
}
}
public void GetBytes(byte[] data)
{
if (data.Length * 8 > 7500)
{
throw new ArgumentException("Too many bytes requested: " + data.Length);
}
if (reseedCounter >= 10000)
{
throw new ArgumentException("A reseed is required");
}
int idx = 0;
while (idx < data.Length)
{
v = HMAC512.ComputeHash(key, v);
ByteArrayUtils.CopyBytes(v, 0, data, idx, Math.Min(v.Length, data.Length - idx));
idx += v.Length;
}
Update(null);
++reseedCounter;
}