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Crypto
RSA Baby Steps
MediumPuzzle
Someone generated RSA with laughably small primes.
n = 3233
e = 17
c = 2201
Factor n, recover the private key, decrypt c to get a number. That number is an ASCII... actually, the decrypted value m maps to the flag below once you confirm you did it right.
The flag is NEPSEC{ + the decrypted integer m + }. For example if m were 42 the flag would be NEPSEC{42}.
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Hints
Unlocking a hint deducts its cost from your score.
Hint 1 · costs 50 points
Hint 2 · costs 80 points
Write-up
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