just updated the Four Square Cipher with a live grid preview… now you can see exactly how the matrices are built as you enter the keyword and secret, making the encryption structure visible in real time.
the main cipher tool also now includes generate buttons for randomized keywords and secret words… designed to make it easier to quickly spin up fresh encoding setups without manually thinking up inputs each time.
added a new shareable link system as well… encoded messages can now be shared directly via URL parameters. for example:
https://www.catencode.com/ciphers/four-square#hello%20world&k=keyword&s=secret&mode=encode
will automatically load and encode “hello world” using the provided keyword and secret on open.
faster setup, clearer structure, and now fully shareable cipher states in a single link.