| Date | User | Challenge | Score |
| lu1f3r | Base64 | 10 | |
| Bug1010 | Great Snakes | 3 | |
| Bug1010 | Finding Flags | 2 | |
| lu1f3r | Hex | 5 | |
| O_RT | Modular Arithmetic 1 | 20 | |
| obahya | Too Honest | 50 | |
| JashB1 | Modes of Operation Starter | 15 | |
| lu1f3r | ASCII | 5 | |
| justin31121 | Adrien's Signs | 80 | |
| JashB1 | Bringing It All Together | 50 | |
| JashB1 | Diffusion through Permutation | 30 | |
| lu1f3r | Great Snakes | 3 | |
| JashB1 | Confusion through Substitution | 25 | |
| JashB1 | Round Keys | 20 | |
| Off_Bl4ck | You either know, XOR you don't | 30 | |
| JashB1 | Structure of AES | 15 | |
| JashB1 | Resisting Bruteforce | 10 | |
| JashB1 | Keyed Permutations | 5 | |
| pufik404 | Manyprime | 40 | |
| papamitaa | Resisting Bruteforce | 10 | |
| pezdokril | Quadratic Residues | 25 | |
| papamitaa | Keyed Permutations | 5 | |
| desmond_lukwago | Diffusion through Permutation | 30 | |
| gradale | Favourite byte | 20 | |
| dec256 | Extended GCD | 20 | |
| gradale | XOR Properties | 15 | |
| wan2405 | Quadratic Residues | 25 | |
| pufik404 | Square Eyes | 35 | |
| Ramizz | Structure of AES | 15 | |
| mvelazquezm | ASCII | 5 | |
| archex | XOR Properties | 15 | |
| Tobsjc | Base64 | 10 | |
| NioZow | Vote for Pedro | 150 | |
| mvelazquezm | Great Snakes | 3 | |
| gradale | XOR Starter | 10 | |
| wan2405 | Modular Inverting | 25 | |
| mvelazquezm | Finding Flags | 2 | |
| Lizzapher | You either know, XOR you don't | 30 | |
| fucla | Lemur XOR | 40 | |
| Tobsjc | Hex | 5 | |
| gradale | Bytes and Big Integers | 10 | |
| wan2405 | Modular Arithmetic 2 | 20 | |
| desmond_lukwago | Confusion through Substitution | 25 | |
| wan2405 | Modular Arithmetic 1 | 20 | |
| Tobsjc | ASCII | 5 | |
| wan2405 | Extended GCD | 20 | |
| desmond_lukwago | Round Keys | 20 | |
| Tobsjc | Great Snakes | 3 | |
| wan2405 | Greatest Common Divisor | 15 | |
| desmond_lukwago | Structure of AES | 15 |
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