Speedy encryption and decryption

[Mike_D]

Here’s the original thread where we did some benchmarking and got over a 20x speedup using pure Xojo code:

Faster Encyrption / Obscuration than RC4 for Large 24MB & 15Mb Files?

Here’s version 6: I cleaned the code up to use the variable names that Wikipedia uses, and I also tested it to make sure it works. It’s a hair slower than version 5 but much more readable: Function rc4v6(dataString as string, keyString as string) As string // highly optimized version of the RC4 algorithm written for Xojo 2014 // uses pointers and MemoryBlocks for speed // written to follow the pseudo-code algorithm described here: http://en.wikipedia.org/wiki/Rc4 #Pragma DisableBack…