| Date | User | Challenge | Score |
| Beauty | XOR Starter | 10 | |
| gabripo | Round Keys | 20 | |
| gamebun | Modular Square Root | 35 | |
| Erij_Djobbi | Modular Inverting | 25 | |
| nous | Square Eyes | 35 | |
| Skarn | RSA Backdoor Viability | 175 | |
| colgi99 | Bytes and Big Integers | 10 | |
| GINO_IL_P4TATINO | Base64 | 10 | |
| gamebun | Legendre Symbol | 35 | |
| capnolove | Export-grade | 100 | |
| jhh0406 | The Matrix Reloaded | 100 | |
| terryberry | Modes of Operation Starter | 15 | |
| GINO_IL_P4TATINO | Hex | 5 | |
| Erij_Djobbi | Modular Arithmetic 2 | 20 | |
| Smuggler | Diffusion through Permutation | 30 | |
| GINO_IL_P4TATINO | ASCII | 5 | |
| GINO_IL_P4TATINO | Great Snakes | 3 | |
| Erij_Djobbi | Modular Arithmetic 1 | 20 | |
| Hac45 | RSA Decryption | 20 | |
| GINO_IL_P4TATINO | Finding Flags | 2 | |
| ApfelStrudel | Parameter Injection | 60 | |
| Hac45 | Private Keys | 20 | |
| ITQ | You either know, XOR you don't | 30 | |
| spinflipper31415 | Curves and Logs | 40 | |
| Erij_Djobbi | Extended GCD | 20 | |
| poe230111 | Passwords as Keys | 50 | |
| kokchen101 | Square Eyes | 35 | |
| nous | Fast Primes | 75 | |
| ApfelStrudel | Deriving Symmetric Keys | 40 | |
| jhh0406 | Nativity | 60 | |
| Kkameleon | LFSR Destroyer | 250 | |
| kokchen101 | Monoprime | 30 | |
| Hac45 | Euler's Totient | 20 | |
| Oshiks | Salty | 20 | |
| Hac45 | Public Keys | 15 | |
| kokchen101 | Inferius Prime | 30 | |
| Hac45 | Modular Exponentiation | 10 | |
| Hac45 | Lemur XOR | 40 | |
| Erij_Djobbi | Greatest Common Divisor | 15 | |
| kokchen101 | Factoring | 15 | |
| WilliamChuah | You either know, XOR you don't | 30 | |
| Zysee | Great Snakes | 3 | |
| Foxi | Bytes and Big Integers | 10 | |
| Zysee | Finding Flags | 2 | |
| Bytes and Big Integers | 10 | ||
| WilliamChuah | Favourite byte | 20 | |
| kgbeen0920 | ASCII | 5 | |
| Erij_Djobbi | Lemur XOR | 40 | |
| WilliamChuah | XOR Properties | 15 | |
| Foxi | Base64 | 10 |
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