Research paper: "Extended-Chacha20 Stream Cipher With Enhanced Quarter Round Function"
- The initial matrix is 6x6, but what are the exact inputs for each index, in other words, how will you fill the two additional columns that are added to the matrix?
- Is it possible to change the constant values? and is it based on a specific theory?
- Is it possible to have 3 or 4 procedures of rotation instead of 2 (columns and rows) for 36 rounds?
- Can I change the order of the words in the matrix?