[0CTF] One Time Pad by Z3

This challenge can be solved by two ways, mathematically or using SMT Solver Intially, I want to remind you that there is a blog post written carefully how to solve it in mathematical way. So please read it first. One Time Pad 1 Now let take a look at the…

Factor RSA public key knowing LSB or MSB of private key

I had very little time to look at EasyCTF this year, it must be cool, I wish I have more time to do it This post is a solution to the challenge lead to a problem with my solution. Knowing LSB of d The challenge is simple, to recover lost…