| Date | User | Challenge | Score |
| bandit01 | Base64 | 10 | |
| Sasori | Modular Inverting | 25 | |
| Titouan | Extended GCD | 20 | |
| l3duy | Logon Zero | 80 | |
| pin | Gram Schmidt | 30 | |
| Titouan | Greatest Common Divisor | 15 | |
| arthur_0404 | Great Snakes | 3 | |
| bandit01 | Hex | 5 | |
| arthur_0404 | Finding Flags | 2 | |
| Ch1ko1 | You either know, XOR you don't | 30 | |
| Agl2204 | XOR Properties | 15 | |
| bandit01 | ASCII | 5 | |
| Titouan | You either know, XOR you don't | 30 | |
| PetruAdelin | Favourite byte | 20 | |
| HmmTrashCrypto | Structure of AES | 15 | |
| jerwas | Quadratic Residues | 25 | |
| pin | Size and Basis | 15 | |
| Sasori | Modular Arithmetic 2 | 20 | |
| Ch1ko1 | Favourite byte | 20 | |
| Titouan | Favourite byte | 20 | |
| kacpert25 | Prime and Prejudice | 200 | |
| kacpert25 | Real Eisenstein | 150 | |
| kacpert25 | Cofactor Cofantasy | 150 | |
| skye_tan | Signing Server | 60 | |
| Ch1ko1 | XOR Properties | 15 | |
| Titouan | XOR Properties | 15 | |
| Hambr | Modular Binomials | 80 | |
| ordavidro | Legendre Symbol | 35 | |
| Kishey | Point Negation | 10 | |
| pin | Vectors | 10 | |
| Plax13 | Quadratic Residues | 25 | |
| CHGHFJHJ | Resisting Bruteforce | 10 | |
| ScreamingIcedTea | Hex | 5 | |
| ScreamingIcedTea | ASCII | 5 | |
| Ch1ko1 | XOR Starter | 10 | |
| Kishey | Background Reading | 5 | |
| HmmTrashCrypto | Resisting Bruteforce | 10 | |
| ScreamingIcedTea | Great Snakes | 3 | |
| kacpert25 | Unencryptable | 125 | |
| CHGHFJHJ | Keyed Permutations | 5 | |
| xrysh_karelia | Computing Public Values | 25 | |
| ScreamingIcedTea | Finding Flags | 2 | |
| Ch1ko1 | Bytes and Big Integers | 10 | |
| kacpert25 | Roll your Own | 125 | |
| skye_tan | Bespoke Padding | 100 | |
| WissemF1234 | Bringing It All Together | 50 | |
| Ch1ko1 | Base64 | 10 | |
| HmmTrashCrypto | Keyed Permutations | 5 | |
| Ch1ko1 | Hex | 5 | |
| Cadaeib65 | Bean Counter | 60 |
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