I have implemented a program that uses a known set of byte values to encrypt or decrypt another set of byte values using bitwise Exclusive Or. The known set of bytes is 256 MiB in length and the other is much much smaller. I take the first byte from the other and XOR it with a byte in the known set. Which byte is used is based on the "Start Offset" (where to start) and the "skip value" 1 to who knows as long as the Offset + (skip value times known set length) is less than the known set. My question would be How guessable would this me if you do not have the Start Offset or the skip value?
calculate odds Combinations & Permutations
- Thread starter DevNull
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