| Date | User | Challenge | Score |
| p22244 | The j-invariant | 20 | |
| AlkisTheCipher | Factoring | 15 | |
| Cyphermyst | Greatest Common Divisor | 15 | |
| minnnjuuu | Round Keys | 20 | |
| p22244 | Resisting Bruteforce | 10 | |
| Nadav160 | Computing Shared Secrets | 30 | |
| p22244 | Keyed Permutations | 5 | |
| aboltus | Transparency | 50 | |
| Nadav160 | Computing Public Values | 25 | |
| DIMITRISMANIATIS | Monoprime | 30 | |
| Trapp | Great Snakes | 3 | |
| ic3d_lemon | L-Win | 120 | |
| SeekerZ0 | Favourite byte | 20 | |
| minnnjuuu | Structure of AES | 15 | |
| SeekerZ0 | XOR Properties | 15 | |
| kieugiathinhphat | Export-grade | 100 | |
| p22244 | RSA Signatures | 25 | |
| p22244 | RSA Decryption | 20 | |
| Googlelai | Chinese Remainder Theorem | 40 | |
| p22244 | Private Keys | 20 | |
| p22244 | Euler's Totient | 20 | |
| SeekerZ0 | XOR Starter | 10 | |
| aboltus | SSH Keys | 35 | |
| p22244 | Public Keys | 15 | |
| SeekerZ0 | Bytes and Big Integers | 10 | |
| Googo | Modular Arithmetic 2 | 20 | |
| goosbo | L-Win | 120 | |
| aboltus | CERTainly not | 30 | |
| RAVEN_031 | Point Negation | 10 | |
| MaxK | Modular Inverting | 25 | |
| 0xhakutaku | Base64 | 10 | |
| ch0k0 | XOR Starter | 10 | |
| SeekerZ0 | Base64 | 10 | |
| aboltus | Privacy-Enhanced Mail? | 25 | |
| 0xhakutaku | Hex | 5 | |
| SeekerZ0 | Hex | 5 | |
| p22244 | Modular Exponentiation | 10 | |
| SeekerZ0 | ASCII | 5 | |
| 0xhakutaku | ASCII | 5 | |
| elyessmida | Modes of Operation Starter | 15 | |
| 0xhakutaku | Great Snakes | 3 | |
| 0xhakutaku | Finding Flags | 2 | |
| kieugiathinhphat | Parameter Injection | 60 | |
| ch0k0 | Bytes and Big Integers | 10 | |
| DIMITRISMANIATIS | Factoring | 15 | |
| SeekerZ0 | Great Snakes | 3 | |
| guilty | ASCII | 5 | |
| MaxK | Modular Arithmetic 2 | 20 | |
| Nadav160 | Generators of Groups | 20 | |
| SeekerZ0 | Finding Flags | 2 |
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