Category: Cryptography Points: 120 Description:
You intercepted a single message. However, it appears to be encrypted. Can you decrypt it? Message
Normally, you pick e and generate d from that. What appears to have happened in this case? What is likely about the size of d?
This challenge is an implementation of Wiener's RSA attack. I would like to give credits to pablocelayes for his wonderful library for this attack. He saved me from doing math.
Therefore, the flag is