| Date | User | Challenge | Score |
| mahrusq | Modular Arithmetic 1 | 20 | |
| e1398791 | Hex | 5 | |
| mrbdj | Finding Flags | 2 | |
| e1398791 | ASCII | 5 | |
| e1398791 | Great Snakes | 3 | |
| mahrusq | Extended GCD | 20 | |
| e1398791 | Finding Flags | 2 | |
| MrFrost | XOR Starter | 10 | |
| UMAyuma | Round Keys | 20 | |
| mngl | Bringing It All Together | 50 | |
| mochaowo | Successive Powers | 60 | |
| MrFrost | Bytes and Big Integers | 10 | |
| Dimbls | Computing Public Values | 25 | |
| mngl | Diffusion through Permutation | 30 | |
| Dimbls | Working with Fields | 10 | |
| cityzen | RSA Decryption | 20 | |
| mngl | Confusion through Substitution | 25 | |
| MrFrost | Base64 | 10 | |
| cityzen | Private Keys | 20 | |
| mngl | Round Keys | 20 | |
| Notyel | Diffusion through Permutation | 30 | |
| UMAyuma | Structure of AES | 15 | |
| cityzen | Euler's Totient | 20 | |
| cityzen | Public Keys | 15 | |
| Dimbls | Passwords as Keys | 50 | |
| cityzen | Modular Exponentiation | 10 | |
| mngl | Structure of AES | 15 | |
| MrFrost | Hex | 5 | |
| P0T | Parameter Injection | 60 | |
| Impexaly | You either know, XOR you don't | 30 | |
| Crypto_noob | ASCII | 5 | |
| Dimbls | Modes of Operation Starter | 15 | |
| mochaowo | Dancing Queen | 120 | |
| MrFrost | ASCII | 5 | |
| User444 | Finding Flags | 2 | |
| Ap3x | Finding Flags | 2 | |
| UMAyuma | Resisting Bruteforce | 10 | |
| MrFrost | Great Snakes | 3 | |
| Lugo198 | Hex | 5 | |
| agentchaos | ASCII | 5 | |
| Lugo198 | ASCII | 5 | |
| Grensrp | Resisting Bruteforce | 10 | |
| Lugo198 | Great Snakes | 3 | |
| Grensrp | Keyed Permutations | 5 | |
| agentchaos | Great Snakes | 3 | |
| agentchaos | Finding Flags | 2 | |
| Lugo198 | Finding Flags | 2 | |
| Grensrp | Great Snakes | 3 | |
| P0T | Square Eyes | 35 | |
| Grensrp | Finding Flags | 2 |
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