Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

All Questions

3
votes
2answers
228 views

How can I prove that a cryptography algorithm is a pseudo-random number generator?

I have read about cryptography prgs. If I have a generator G(x1,x2...,xn)= x1,x2,...,xn, x1&x2...&xn , how can I prove that it is a prg or prove it is not? Is there some principles I have ...
2
votes
2answers
160 views

Rigorous proof against pseudorandom generator

I am trying to teach myself the principles of cryptograhpy, and want to solve the following question: Let G be the algorithm that takes an input x = (x1, . . . , xn) from {0, 1} n (so each xi ∈ {...