| Date | User | Challenge | Score |
| sidderton57 | Hex | 5 | |
| parismcv | Extended GCD | 20 | |
| harish | You either know, XOR you don't | 30 | |
| Tabaxi3K | Mixed Up | 120 | |
| parismcv | Greatest Common Divisor | 15 | |
| harish | Favourite byte | 20 | |
| sidderton57 | ASCII | 5 | |
| lemful | SSH Keys | 35 | |
| Tabaxi3K | MDFlag | 125 | |
| Jerbear3256 | Deriving Symmetric Keys | 40 | |
| Shild | Network Attacks | 5 | |
| Realm | Great Snakes | 3 | |
| parismcv | You either know, XOR you don't | 30 | |
| Shild | Great Snakes | 3 | |
| sidderton57 | Great Snakes | 3 | |
| Hattmakare | Curves and Logs | 40 | |
| Jerbear3256 | Computing Shared Secrets | 30 | |
| Shild | Finding Flags | 2 | |
| sidderton57 | Finding Flags | 2 | |
| Duster | Symmetry | 50 | |
| Jerbear3256 | Computing Public Values | 25 | |
| Tabaxi3K | MD0 | 80 | |
| Tabaxi3K | No Difference | 175 | |
| Tabaxi3K | Secure Protocols | 5 | |
| SavvyDevil | XOR Starter | 10 | |
| Tabaxi3K | Edwards Goes Degenerate | 100 | |
| C4mpoJUL | Modes of Operation Starter | 15 | |
| Hattmakare | Scalar Multiplication | 35 | |
| givvl | Legendre Symbol | 35 | |
| Tabaxi3K | No Random, No Bias | 120 | |
| lemful | Transparency | 50 | |
| Tabaxi3K | ProSign 3 | 100 | |
| C4mpoJUL | Bringing It All Together | 50 | |
| Tabaxi3K | Curveball | 100 | |
| C4mpoJUL | Diffusion through Permutation | 30 | |
| C4mpoJUL | Confusion through Substitution | 25 | |
| C4mpoJUL | Round Keys | 20 | |
| lemful | Resisting Bruteforce | 10 | |
| SavvyDevil | Bytes and Big Integers | 10 | |
| nail | ZKP Introduction | 5 | |
| lemful | Keyed Permutations | 5 | |
| C4mpoJUL | Structure of AES | 15 | |
| C4mpoJUL | Resisting Bruteforce | 10 | |
| C4mpoJUL | Keyed Permutations | 5 | |
| Sapphoneix | XOR Starter | 10 | |
| SavvyDevil | Base64 | 10 | |
| Tabaxi3K | Moving Problems | 150 | |
| GAUTTER | Adrien's Signs | 80 | |
| Sapphoneix | Bytes and Big Integers | 10 | |
| GAUTTER | Chinese Remainder Theorem | 40 |
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