bitazar
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Solved Challenges
| RSA | Blinding Light | 120 | |
| Symmetric Ciphers | Stream of Consciousness | 80 | |
| Symmetric Ciphers | Pad Thai | 80 | |
| Symmetric Ciphers | The Good, The Pad, The Ugly | 100 | |
| Symmetric Ciphers | Logon Zero | 80 | |
| Symmetric Ciphers | CTRIME | 70 | |
| Symmetric Ciphers | Bean Counter | 60 | |
| Symmetric Ciphers | Symmetry | 50 | |
| Symmetric Ciphers | Triple DES | 60 | |
| Symmetric Ciphers | Lazy CBC | 60 | |
| Symmetric Ciphers | Flipping Cookie | 60 | |
| Symmetric Ciphers | ECB Oracle | 60 | |
| Symmetric Ciphers | ECB CBC WTF | 55 | |
| Symmetric Ciphers | Passwords as Keys | 50 | |
| Symmetric Ciphers | Modes of Operation Starter | 15 | |
| Symmetric Ciphers | Bringing It All Together | 50 | |
| 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 | |
| Symmetric Ciphers | Keyed Permutations | 5 | |
| Introduction | Network Attacks | 5 | |
| Mathematics | Ellipse Curve Cryptography | 125 | |
| Mathematics | Real Eisenstein | 150 | |
| Mathematics | Roll your Own | 125 | |
| Mathematics | No Way Back Home | 100 | |
| Mathematics | Broken RSA | 100 | |
| Mathematics | Modular Binomials | 80 | |
| Mathematics | Adrien's Signs | 80 | |
| Mathematics | Chinese Remainder Theorem | 40 | |
| Mathematics | Modular Square Root | 35 | |
| Mathematics | Legendre Symbol | 35 | |
| Mathematics | Quadratic Residues | 25 | |
| Mathematics | Successive Powers | 60 | |
| General | Modular Inverting | 25 | |
| General | Modular Arithmetic 2 | 20 | |
| General | Modular Arithmetic 1 | 20 | |
| General | Greatest Common Divisor | 15 | |
| General | Extended GCD | 20 | |
| General | Encoding Challenge | 40 | |
| General | Lemur XOR | 40 | |
| General | You either know, XOR you don't | 30 | |
| General | Favourite byte | 20 | |
| General | XOR Properties | 15 | |
| General | XOR Starter | 10 | |
| General | Bytes and Big Integers | 10 | |
| General | Base64 | 10 | |
| General | Hex | 5 | |
| General | ASCII | 5 | |
| Introduction | Great Snakes | 3 | |
| Introduction | Finding Flags | 2 |
