Challenges I created for some CTF competitions.
| Name | Category | Solves | CTF | Concept |
|---|---|---|---|---|
| Catch | Crypto | 134 | idekCTF 2025 | Matrices |
| Sadness ECC / Sadness ECC Revenge | Crypto | 65 / 27 | idekCTF 2025 | Singular Curve |
| Happy ECC / Happy ECC Revenge | Crypto | 58 / 26 | idekCTF 2025 | Hyperelliptic Curve |
| Diamond Ticket | Crypto | 37 | idekCTF 2025 | GCD, LLL |
| Name | Category | Solves | CTF | Concept |
|---|---|---|---|---|
| ice-cream | Crypto | 4 | Wannagame Championship 2024 | Linear combination (?), Polynomial GCD, LLL |
| Random | Crypto | 152 | Wannagame Championship 2024 | Python's random module |
| Golden Ticket | Crypto | 189 | idekCTF 2024 | Discrete Log, Pohlig Hellman |