Category: Cryptography Points: 50 Description:
RSA encryption/decryption is based on a formula that anyone can find and use, as long as they know the values to plug in. Given the encrypted number 150815, d = 1941, and N = 435979, what is the decrypted number?
decrypted = (encrypted) ^ d mod N
Math time! Since most calculators have a character limit, let's use a Python calculator!
>>> decrypt = (150815 ** 1941) % 435979 >>> print(decrypt) 133337
Therefore the flag is