ebCTF 2013 | Cry200 « One to many » [Write Up]

« We identified some unground operatives that are using RSA to exchange messages with each other. We managed to incercept some, can you decrypt them? » In this crypto challenge, we were given 4096 text files containing n, the modulus, and encrypted_msg, the… encrypted message in RSA, for example: The modulus in each file were […]