| Date | User | Challenge | Score |
| msc0 | Hex | 5 | |
| kugel | Modular Exponentiation | 10 | |
| andrewk0712 | Structure of AES | 15 | |
| lostdawggg | Legendre Symbol | 35 | |
| khxjn | Parameter Injection | 60 | |
| Honggg1020 | RSA Signatures | 25 | |
| PatriciahMbua | Greatest Common Divisor | 15 | |
| Honggg1020 | RSA Decryption | 20 | |
| Honggg1020 | Private Keys | 20 | |
| Honggg1020 | Euler's Totient | 20 | |
| msc0 | ASCII | 5 | |
| brew | Missing Modulus | 80 | |
| Honggg1020 | Public Keys | 15 | |
| Honggg1020 | Modular Exponentiation | 10 | |
| msc0 | Great Snakes | 3 | |
| ca1cu1ating | Bringing It All Together | 50 | |
| Vision_ | Favourite byte | 20 | |
| andrewk0712 | Resisting Bruteforce | 10 | |
| Vision_ | XOR Properties | 15 | |
| ca1cu1ating | Diffusion through Permutation | 30 | |
| andrewk0712 | Keyed Permutations | 5 | |
| saic | JWT Secrets | 25 | |
| tackmin1204 | Chinese Remainder Theorem | 40 | |
| Vic144 | Diffusion through Permutation | 30 | |
| ca1cu1ating | Confusion through Substitution | 25 | |
| Hereglegchgdgima | Finding Flags | 2 | |
| msc0 | Finding Flags | 2 | |
| ObsidianTrace | Greatest Common Divisor | 15 | |
| Honggg1020 | Parameter Injection | 60 | |
| ca1cu1ating | Round Keys | 20 | |
| lydiah | Adrien's Signs | 80 | |
| ca1cu1ating | Structure of AES | 15 | |
| Kaos | Favourite byte | 20 | |
| Kaos | XOR Properties | 15 | |
| lydiah | Quadratic Residues | 25 | |
| Vic144 | Confusion through Substitution | 25 | |
| Kaos | XOR Starter | 10 | |
| Kaos | Bytes and Big Integers | 10 | |
| lostdawggg | Quadratic Residues | 25 | |
| brew | Noise Cheap | 90 | |
| ca1cu1ating | Resisting Bruteforce | 10 | |
| ca1cu1ating | Keyed Permutations | 5 | |
| ungjae | Deriving Symmetric Keys | 40 | |
| Kaos | Base64 | 10 | |
| Honggg1020 | Deriving Symmetric Keys | 40 | |
| Honggg1020 | Computing Shared Secrets | 30 | |
| Honggg1020 | Computing Public Values | 25 | |
| Honggg1020 | Generators of Groups | 20 | |
| ariaria | XOR Starter | 10 | |
| tackmin1204 | Modular Square Root | 35 |
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