| Date | User | Challenge | Score |
| Snacky | Point Addition | 30 | |
| 756TrollerLujanC | Quadratic Residues | 25 | |
| 756TrollerLujanC | Modular Inverting | 25 | |
| Gollum3063 | Finding Flags | 2 | |
| Bat_bjj | You either know, XOR you don't | 30 | |
| MilkiSushi | Background Reading | 5 | |
| Sofia1234 | Stream of Consciousness | 80 | |
| Sofia1234 | CTRIME | 70 | |
| Sofia1234 | Bean Counter | 60 | |
| Sofia1234 | Symmetry | 50 | |
| Sofia1234 | Triple DES | 60 | |
| MilkiSushi | Export-grade | 100 | |
| Sofia1234 | Lazy CBC | 60 | |
| Sofia1234 | Flipping Cookie | 60 | |
| Sofia1234 | ECB Oracle | 60 | |
| Sofia1234 | ECB CBC WTF | 55 | |
| MilkiSushi | Parameter Injection | 60 | |
| Sofia1234 | Passwords as Keys | 50 | |
| Sofia1234 | Modes of Operation Starter | 15 | |
| Sofia1234 | Diffusion through Permutation | 30 | |
| MilkiSushi | Deriving Symmetric Keys | 40 | |
| Sofia1234 | Confusion through Substitution | 25 | |
| Sofia1234 | Round Keys | 20 | |
| Sofia1234 | Structure of AES | 15 | |
| Sofia1234 | Resisting Bruteforce | 10 | |
| Sofia1234 | Keyed Permutations | 5 | |
| MilkiSushi | Computing Shared Secrets | 30 | |
| Sofia1234 | Broken RSA | 100 | |
| Duster | Modular Arithmetic 2 | 20 | |
| Sofia1234 | Modular Binomials | 80 | |
| ereiselt | Triple DES | 60 | |
| Sofia1234 | Successive Powers | 60 | |
| Sofia1234 | Chinese Remainder Theorem | 40 | |
| MilkiSushi | Computing Public Values | 25 | |
| Sofia1234 | Modular Square Root | 35 | |
| Sofia1234 | Legendre Symbol | 35 | |
| Sofia1234 | Quadratic Residues | 25 | |
| MilkiSushi | Generators of Groups | 20 | |
| 0xvpr | Modular Square Root | 35 | |
| MilkiSushi | Working with Fields | 10 | |
| Sofia1234 | Transparency | 50 | |
| Sofia1234 | SSH Keys | 35 | |
| MilkiSushi | Modulus Inutilis | 50 | |
| Sofia1234 | CERTainly not | 30 | |
| Sofia1234 | Privacy-Enhanced Mail? | 25 | |
| Sofia1234 | Modular Inverting | 25 | |
| Sofia1234 | Modular Arithmetic 2 | 20 | |
| Sofia1234 | Modular Arithmetic 1 | 20 | |
| Sofia1234 | Extended GCD | 20 | |
| MilkiSushi | Salty | 20 |
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