| Date | User | Challenge | Score |
| navo | Diffusion through Permutation | 30 | |
| maisec21 | Bringing It All Together | 50 | |
| nguyenvietkhoa | Quadratic Residues | 25 | |
| F0rhex | Generators of Groups | 20 | |
| bejurla | Finding Flags | 2 | |
| JokoFlex | Modular Arithmetic 1 | 20 | |
| nguyenvietkhoa | Modular Inverting | 25 | |
| maisec21 | Diffusion through Permutation | 30 | |
| nguyenvietkhoa | Modular Arithmetic 2 | 20 | |
| pepperoni21 | Bringing It All Together | 50 | |
| maisec21 | Confusion through Substitution | 25 | |
| JokoFlex | Extended GCD | 20 | |
| luegac21 | Diffusion through Permutation | 30 | |
| YEQX67 | JWT Secrets | 25 | |
| maisec21 | Round Keys | 20 | |
| nguyenvietkhoa | Modular Arithmetic 1 | 20 | |
| new2 | Export-grade | 100 | |
| maisec21 | Structure of AES | 15 | |
| nguyenvietkhoa | Extended GCD | 20 | |
| F0rhex | Working with Fields | 10 | |
| bncybz | Modular Inverting | 25 | |
| maisec21 | Resisting Bruteforce | 10 | |
| maisec21 | Keyed Permutations | 5 | |
| nguyenvietkhoa | Greatest Common Divisor | 15 | |
| AgileOrc | Efficient Exchange | 50 | |
| YEQX67 | No Way JOSE | 20 | |
| Dxminik | Diffusion through Permutation | 30 | |
| nguyenvietkhoa | You either know, XOR you don't | 30 | |
| shura356 | Successive Powers | 60 | |
| drnikos | Resisting Bruteforce | 10 | |
| beimingxue | Finding Flags | 2 | |
| bncybz | Modular Arithmetic 2 | 20 | |
| navo | Confusion through Substitution | 25 | |
| YEQX67 | JWT Sessions | 10 | |
| luegac21 | Confusion through Substitution | 25 | |
| aleksej_p | Greatest Common Divisor | 15 | |
| Veronika | Manyprime | 40 | |
| Abilmansur_Daure | Private Keys | 20 | |
| nguyenvietkhoa | Favourite byte | 20 | |
| alexjj | Base64 | 10 | |
| alexjj | XOR Properties | 15 | |
| eneo | Modular Inverting | 25 | |
| alexjj | You either know, XOR you don't | 30 | |
| nguyenvietkhoa | XOR Properties | 15 | |
| pepperoni21 | Diffusion through Permutation | 30 | |
| 0xSa3d | Hex | 5 | |
| alexjj | Favourite byte | 20 | |
| eneo | Modular Arithmetic 2 | 20 | |
| rush_i | Chinese Remainder Theorem | 40 | |
| nguyenvietkhoa | XOR Starter | 10 |
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