I would like to implement a simple substitution cypher to mask private ids in URLs I know how my IDs will look like (combination of upperchase ascii, digits and underscore), and they will be rather long, as they are composed keys. I would like to use a longer alphabet to shorten the resulting codes (I'd like to use upper and lower case ...
Hi All, I need to create an application that decrypts data that is encrypted using AES with a 512-bit key. What I need to know is whether we can create an AES key of length 512-bits? The documentation says we can create a key of length up to 256-bits. If that is the case, is there any way that I can add my own implementation for 512-bit...
I just started university and managed to spend my entire first week sick, so I'm having a hard time figuring this out. I'm supposed to crack the caesar cypher. I have to declare a function crack : int * int -> int so that if (k, c) are of the type int, where k is the decrypted text and c the encrypted text, calling crack(k, c) will retu...