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Solved Challenges
| Mathematics | Adrien's Signs | 80 | |
| Mathematics | Successive Powers | 60 | |
| Mathematics | Chinese Remainder Theorem | 40 | |
| Symmetric Ciphers | Stream of Consciousness | 80 | |
| Symmetric Ciphers | Symmetry | 50 | |
| Symmetric Ciphers | Flipping Cookie | 60 | |
| Symmetric Ciphers | ECB CBC WTF | 55 | |
| Symmetric Ciphers | Diffusion through Permutation | 30 | |
| Symmetric Ciphers | Confusion through Substitution | 25 | |
| Symmetric Ciphers | Round Keys | 20 | |
| Symmetric Ciphers | Structure of AES | 15 | |
| Symmetric Ciphers | Resisting Bruteforce | 10 | |
| General | CERTainly not | 30 | |
| General | Privacy-Enhanced Mail? | 25 | |
| General | Modular Inverting | 25 | |
| General | Favourite byte | 20 | |
| General | XOR Starter | 10 | |
| General | Bytes and Big Integers | 10 | |
| General | ASCII | 5 |
