Here's a simple cipher to protect cursory examination of strings inside your SaveState() and other plain text files. Manipulation of values by the end-user would require knowledge of the key, which can be found through statistical analysis of repeating (or known) characters in the cyphertext of at least as many bytes of data there are in the key. (so, the longer your key is, the better!) With many kinds of data, this method provides protection against trivial attempts to tamper with your data.
I've only tested keys and ciphertext in 7-bit ascii -- unicode characters might get turned into mojibake on cipher, depending on the target. Plain-old-text, JSON and XML should be okay.
Function ChimpCipher:String(input:String, key:String)
Local out:int[input.Length] 'output string chars
Local k:Int 'Key iterator
For Local i:Int = 0 Until input.Length
Local ochr:Int = input[i]
If k >= key.Length Then k = 0 'cycle
out[i] = ochr ~ key[k]
k += 1
Next
Return String.FromChars(out)
End Function
'''''''Example usage below:
Const key:String = "test key"
Const ctext:String = "output block.~nOUTPUT BLOCK ~~ [] {} <> :|!;~n ~qOutput Block~q~n"
Function Main:Int()
Print ctext
Print ChimpCipher(ctext, key) + "~n" 'ciphertext
Print ChimpCipher(ChimpCipher(ctext, key), key) 'output, to prove 1:1
End Function
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