Tag Info

New answers tagged

2

First things first: a PRNG (Pseudo Random Number Generator) can not provide a one-time pad. As a reminder: a one-time pad… has to be truly random, must be at least as long as the plaintext, is never reused in whole or in part, and is kept completely secret. Only when all four points are met, we´re talking about OTP. Your PRNG idea fails to meet those ...


0

Without more context the answer isn't quite precise. In the following answer $\oplus$ always denotes bit-wise XOR. First let's quickly revisit "plain" cascade encryption. You encrypt arbitrary messages using the keys $K_1,K_2,K_3$ and the encryption algorithm $E$ as follows: $C=E_{K_1}(D_{K_2}(E_{K_3}(P)))$ Now the first possible XOR-cascading construction ...


2

While you're a crypto newbie, I hope that you know something about mathematics (because you've stumbled something that needs to be described in mathematical terms). What you've described here is actually polynomial multiplication (over polynomials in $GF(2)$ (that is, we do our computations modulo 2). That is, you can interpret the numbers as specifying a ...



Top 50 recent answers are included