Campaigns / Proof of Tampering / Prime Dust

Prime Dust

a

Architect

ahonore

Difficulty

5/5

ETA

20 min

The recovered workstation contains an RSA public key and a single ciphertext value. The implementation is old and used a modulus small enough to factor with a short script in a few minutes.

Recover the plaintext. The flag is the recovered word.

n = 1078527743888315256264790567126902440332643207818347881199015574217827466787464116367661540743606126210378699
e = 17
ciphertext = 1050964024082692989880423179863098440508133429921469673807189961801314695075719700506359912790319588116747250

encoding = flag word as a single big-endian integer

◆ Input solution

◇ Stage cleared

Next Stage →