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Solved Challenges
| Symmetric Ciphers | Resisting Bruteforce | 10 | |
| General | Bytes and Big Integers | 10 | |
| Mathematics | Adrien's Signs | 80 | |
| Introduction | Network Attacks | 5 | |
| Symmetric Ciphers | Keyed Permutations | 5 | |
| RSA | RSA Decryption | 20 | |
| RSA | Private Keys | 20 | |
| RSA | Euler's Totient | 20 | |
| RSA | Public Keys | 15 | |
| RSA | Modular Exponentiation | 10 | |
| Mathematics | Modular Square Root | 35 | |
| Mathematics | Chinese Remainder Theorem | 40 | |
| Mathematics | Successive Powers | 60 | |
| General | Base64 | 10 | |
| General | Hex | 5 | |
| Lattices | Size and Basis | 15 | |
| Lattices | Vectors | 10 | |
| General | ASCII | 5 | |
| Introduction | Great Snakes | 3 | |
| Diffie-Hellman | Computing Shared Secrets | 30 | |
| Diffie-Hellman | Computing Public Values | 25 | |
| Diffie-Hellman | Generators of Groups | 20 | |
| Diffie-Hellman | Working with Fields | 10 | |
| Elliptic Curves | Scalar Multiplication | 35 | |
| Elliptic Curves | Point Addition | 30 | |
| Mathematics | Legendre Symbol | 35 | |
| Mathematics | Quadratic Residues | 25 | |
| General | Modular Inverting | 25 | |
| General | Modular Arithmetic 2 | 20 | |
| General | Modular Arithmetic 1 | 20 | |
| General | Extended GCD | 20 | |
| General | Greatest Common Divisor | 15 | |
| Introduction | Finding Flags | 2 | |
| Elliptic Curves | Point Negation | 10 | |
| Elliptic Curves | Background Reading | 5 |
