3 ms·
My opinion on cascade ciphers is currently neutral. If done properly, they are a nice hedge against currently unknown weaknesses, but a more complicated constru
by ryan-c 11y ago
My opinion on cascade ciphers is currently neutral. If done properly, they are a nice hedge against currently unknown weaknesses, but a more complicated construction means more places to make mistakes.
- nickpsecurity 11y agoThat's why I used them. There could be obscure, mathematical interactions that they introduce that are problematic. We might eventually figure those out. The enemy might be able to exploit those without knowing which ciphers, which order, and which initial data. Meanwhile, there's a steady stream of problems in regular ciphers, modes, and protocols that justify mitigating any one in a design. So, yeah, my polyciphers are a hedge. They also exploit combinatorial explosion by randomizing extra, large numbers. Used to by resources required to simulate the combos of algorithms themselves but FPGA's made that obsolete. :(