| Date | User | Challenge | Score |
| Royogurt | Bytes and Big Integers | 10 | |
| tieuchocute | You either know, XOR you don't | 30 | |
| tieuchocute | Favourite byte | 20 | |
| tieuchocute | XOR Properties | 15 | |
| Quytiunhm | You either know, XOR you don't | 30 | |
| leinad | Bringing It All Together | 50 | |
| tieuchocute | XOR Starter | 10 | |
| HollowQin_G | Flipping Cookie | 60 | |
| leinad | Token Appreciation | 5 | |
| tieuchocute | Bytes and Big Integers | 10 | |
| tieuchocute | Base64 | 10 | |
| Royogurt | Base64 | 10 | |
| tieuchocute | Hex | 5 | |
| Red_Hive_008 | Hex | 5 | |
| ei15951 | Deriving Symmetric Keys | 40 | |
| minhtuanpro | Base64 | 10 | |
| tieuchocute | ASCII | 5 | |
| Red_Hive_008 | ASCII | 5 | |
| tieuchocute | Great Snakes | 3 | |
| Krinph | Bringing It All Together | 50 | |
| minhtuanpro | Hex | 5 | |
| monk000 | Computing Shared Secrets | 30 | |
| Red_Hive_008 | Great Snakes | 3 | |
| ei15951 | Computing Shared Secrets | 30 | |
| tieuchocute | Finding Flags | 2 | |
| ei15951 | Computing Public Values | 25 | |
| monk000 | Computing Public Values | 25 | |
| minhtuanpro | ASCII | 5 | |
| minhtuanpro | Great Snakes | 3 | |
| minhtuanpro | Finding Flags | 2 | |
| Krinph | Diffusion through Permutation | 30 | |
| ei15951 | Generators of Groups | 20 | |
| kevinlean | Modular Arithmetic 1 | 20 | |
| monk000 | Generators of Groups | 20 | |
| ei15951 | Working with Fields | 10 | |
| 4rg0 | Extended GCD | 20 | |
| Quytiunhm | Favourite byte | 20 | |
| kevinlean | Extended GCD | 20 | |
| Krinph | Confusion through Substitution | 25 | |
| ei15951 | Modulus Inutilis | 50 | |
| monk000 | Working with Fields | 10 | |
| Quytiunhm | XOR Properties | 15 | |
| monk000 | Modulus Inutilis | 50 | |
| rev_cryp | Euler's Totient | 20 | |
| kevinlean | Greatest Common Divisor | 15 | |
| ei15951 | Salty | 20 | |
| Krinph | Round Keys | 20 | |
| sinibida | Bean Counter | 60 | |
| ei15951 | Manyprime | 40 | |
| medb556 | Bringing It All Together | 50 |
You are now level Current level