西奥
1st place
76 points
Awards
Solves
| Challenge | Category | Value | Time |
| Scytale | Cryptography | 3 | |
| Sum-O-Primes | Cryptography | 10 | |
| Guess Bob's ID | Cryptography | 20 | |
| Find the signature | Cryptography | 20 | |
| Useful transformation | Cryptography | 1 | |
| It is quite easy | Cryptography | 1 | |
| Recover Alice's password | Cryptography | 1 | |
| Step 3 to verify the signature | Cryptography | 20 | |
| Find the public key | Cryptography | 0 |