| Date | User | Challenge | Score |
| Almasbek | Structure of AES | 15 | |
| kiramary | Resisting Bruteforce | 10 | |
| InRainbows | Modular Binomials | 80 | |
| TABguy | Bytes and Big Integers | 10 | |
| zhanga | Transparency | 50 | |
| Almasbek | Resisting Bruteforce | 10 | |
| zhanga | SSH Keys | 35 | |
| zhanga | CERTainly not | 30 | |
| zhanga | Privacy-Enhanced Mail? | 25 | |
| Almasbek | Keyed Permutations | 5 | |
| divson | Finding Flags | 2 | |
| Cryptomagic | Greatest Common Divisor | 15 | |
| conwaykkk | Extended GCD | 20 | |
| NioZow | Hamiltonicity 2 | 175 | |
| NioZow | Hamiltonicity 2 (CryptoHack) | 0 | |
| Thalji | Public Keys | 15 | |
| Thalji | Modular Exponentiation | 10 | |
| InRainbows | Adrien's Signs | 80 | |
| stalker | Bytes and Big Integers | 10 | |
| conwaykkk | Greatest Common Divisor | 15 | |
| Almasbek | Privacy-Enhanced Mail? | 25 | |
| cloudchamb3r | Extended GCD | 20 | |
| Thalji | Legendre Symbol | 35 | |
| SovetskX3K | ASCII | 5 | |
| Thalji | Quadratic Residues | 25 | |
| SovetskX3K | Great Snakes | 3 | |
| SovetskX3K | Finding Flags | 2 | |
| Almasbek | Transparency | 50 | |
| Almasbek | CERTainly not | 30 | |
| Almasbek | SSH Keys | 35 | |
| jonnytang | Privacy-Enhanced Mail? | 25 | |
| Chomi | Favourite byte | 20 | |
| olajti | Great Snakes | 3 | |
| Dakshata | ASCII | 5 | |
| Dakshata | Great Snakes | 3 | |
| Tina980885 | Modes of Operation Starter | 15 | |
| ZSC | Computing Shared Secrets | 30 | |
| ZSC | Computing Public Values | 25 | |
| Dakshata | Finding Flags | 2 | |
| sockswatcher | Greatest Common Divisor | 15 | |
| Tina980885 | Bringing It All Together | 50 | |
| conwaykkk | You either know, XOR you don't | 30 | |
| PanLiqi | Deriving Symmetric Keys | 40 | |
| Destruction988 | Modular Exponentiation | 10 | |
| Ablayhan9900 | Round Keys | 20 | |
| MarkAnton00 | Finding Flags | 2 | |
| PanLiqi | Modulus Inutilis | 50 | |
| olajti | Finding Flags | 2 | |
| Destruction988 | Network Attacks | 5 | |
| PanLiqi | Salty | 20 |
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