| Date | User | Challenge | Score |
| xasiax717 | ASCII | 5 | |
| admincxz | Flipping Cookie | 60 | |
| admincxz | ECB CBC WTF | 55 | |
| smasher223 | ASCII | 5 | |
| admincxz | ECB Oracle | 60 | |
| admincxz | Passwords as Keys | 50 | |
| Doanhdz | Bytes and Big Integers | 10 | |
| admincxz | Modes of Operation Starter | 15 | |
| smasher223 | Great Snakes | 3 | |
| admincxz | Bringing It All Together | 50 | |
| smasher223 | Finding Flags | 2 | |
| admincxz | Diffusion through Permutation | 30 | |
| vocie | SSH Keys | 35 | |
| admincxz | Confusion through Substitution | 25 | |
| admincxz | Round Keys | 20 | |
| admincxz | Structure of AES | 15 | |
| admincxz | Resisting Bruteforce | 10 | |
| cryptotti | Hex | 5 | |
| wqe___ | Curves and Logs | 40 | |
| vocie | CERTainly not | 30 | |
| admincxz | Keyed Permutations | 5 | |
| Zezotata23 | XOR Properties | 15 | |
| admincxz | Modular Binomials | 80 | |
| alexly | Finding Flags | 2 | |
| NeIsenn | Legendre Symbol | 35 | |
| cibecal933 | Great Snakes | 3 | |
| admincxz | Adrien's Signs | 80 | |
| cibecal933 | Finding Flags | 2 | |
| admincxz | Chinese Remainder Theorem | 40 | |
| cryptotti | ASCII | 5 | |
| wqe___ | Scalar Multiplication | 35 | |
| shshent | Montgomery's Ladder | 40 | |
| vocie | Privacy-Enhanced Mail? | 25 | |
| Arturia | Finding Flags | 2 | |
| admincxz | Modular Square Root | 35 | |
| 627en_ | Base64 | 10 | |
| Krinph | Efficient Exchange | 50 | |
| wwt1733 | Efficient Exchange | 50 | |
| Zezotata23 | XOR Starter | 10 | |
| minjun | Lo-Hi Card Game | 120 | |
| vocie | Modular Inverting | 25 | |
| Zezotata23 | Bytes and Big Integers | 10 | |
| wqe___ | Point Addition | 30 | |
| Krinph | Curves and Logs | 40 | |
| shshent | Efficient Exchange | 50 | |
| vocie | Modular Arithmetic 2 | 20 | |
| d3v35h | Crossed Wires | 100 | |
| bes | Euler's Totient | 20 | |
| babi77 | Finding Flags | 2 | |
| shshent | Curves and Logs | 40 |
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