- #1
mhill
- 189
- 1
Homework Statement
given a number of four ciphers ABCD and another four cipher number CDAB get the values of A,B,C,D if we know that 2x (ABCD)=CDAB-5
Homework Equations
2X (ABCD)=CDAB-5
The Attempt at a Solution
no idea.. i have try by brute force but got no results only incongruences , for example B=-3 or similar here '2 x' means multiplication