Friday, March 14, 2008

Added RandomLSB algorithm support to OpenStego

Today, I released v0.4.2 of OpenStego. It has now support for one more algorithm - RandomLSB.
This is similar to the regular LSB algorithm except that instead of using Least Significant Bits of image in sequence, it writes in a pseudo-random order.

The random number generator is seeded using password hash. And so the sequence of bits written is dependent on the password.

This should now give a more robust method of embedding data, which will be difficult to detect using statistical analysis. The method is definitely slower compared to regular LSB algorithm, but is more secure.