http://deepweb4wt3m4dhutpxpe7d7wxdftfdf4hhag4sizgon6th5lcefloid.onion/blog/darknet-news/what-is-aes-encryption
This step uses a non-linear substitution table (S-box) to replace each byte in the block with another byte according to a predefined rule. This substitution introduces complexity and helps to thwart attacks based on statistical analysis. ShiftRows. The rows of the block are cyclically shifted by different offsets.