| Date | User | Challenge | Score |
| agentjlrmt | You either know, XOR you don't | 30 | |
| cuuntzu | Modular Arithmetic 2 | 20 | |
| agentjlrmt | Confusion through Substitution | 25 | |
| exoq | Everything is Big | 70 | |
| agentjlrmt | Diffusion through Permutation | 30 | |
| agentjlrmt | Round Keys | 20 | |
| photonic | ASCII | 5 | |
| agentjlrmt | Structure of AES | 15 | |
| ParaIron | XOR Starter | 10 | |
| f7kumoi | RSA Decryption | 20 | |
| agentjlrmt | Privacy-Enhanced Mail? | 25 | |
| f7kumoi | Private Keys | 20 | |
| f7kumoi | Euler's Totient | 20 | |
| f7kumoi | Public Keys | 15 | |
| f7kumoi | Modular Exponentiation | 10 | |
| agentjlrmt | Square Eyes | 35 | |
| agentjlrmt | Monoprime | 30 | |
| agentjlrmt | Inferius Prime | 30 | |
| PepeChG | Finding Flags | 2 | |
| vibehutao | Resisting Bruteforce | 10 | |
| cuuntzu | Modular Arithmetic 1 | 20 | |
| cuuntzu | Extended GCD | 20 | |
| PJ696769 | Favourite byte | 20 | |
| PJ696769 | XOR Properties | 15 | |
| agentjlrmt | RSA Signatures | 25 | |
| agentjlrmt | RSA Decryption | 20 | |
| agentjlrmt | Private Keys | 20 | |
| agentjlrmt | Euler's Totient | 20 | |
| agentjlrmt | Public Keys | 15 | |
| agentjlrmt | Modular Exponentiation | 10 | |
| agentjlrmt | Modular Inverting | 25 | |
| agentjlrmt | Modular Arithmetic 2 | 20 | |
| agentjlrmt | Modular Arithmetic 1 | 20 | |
| agentjlrmt | Extended GCD | 20 | |
| agentjlrmt | Bytes and Big Integers | 10 | |
| agentjlrmt | Base64 | 10 | |
| agentjlrmt | Greatest Common Divisor | 15 | |
| The_cryptic | Resisting Bruteforce | 10 | |
| The_cryptic | Keyed Permutations | 5 | |
| OutOfTheWell | Too Honest | 50 | |
| agentjlrmt | Favourite byte | 20 | |
| agentjlrmt | XOR Properties | 15 | |
| agentjlrmt | XOR Starter | 10 | |
| OutOfTheWell | Non-Interactive | 35 | |
| trinitybcn | Finding Flags | 2 | |
| agentjlrmt | Hex | 5 | |
| agentjlrmt | ASCII | 5 | |
| Xarnia | Base64 | 10 | |
| Xarnia | Hex | 5 | |
| Xarnia | ASCII | 5 |
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