| Date | User | Challenge | Score |
| x092646 | Modes of Operation Starter | 15 | |
| yurin3440 | Modular Exponentiation | 10 | |
| astroanax | LWE Background | 5 | |
| x092646 | Bringing It All Together | 50 | |
| astroanax | Find the Lattice | 100 | |
| astroanax | Gaussian Reduction | 50 | |
| astroanax | Gram Schmidt | 30 | |
| pongpat | Great Snakes | 3 | |
| astroanax | Size and Basis | 15 | |
| mihaiDraghici | Structure of AES | 15 | |
| allowu | XOR Starter | 10 | |
| astroanax | Vectors | 10 | |
| yurin3440 | Quadratic Residues | 25 | |
| 95ych | OR Proof | 75 | |
| 95ych | OR Proof (CryptoHack) | 0 | |
| pongpat | Finding Flags | 2 | |
| mihaiDraghici | Resisting Bruteforce | 10 | |
| x092646 | Diffusion through Permutation | 30 | |
| mihaiDraghici | Keyed Permutations | 5 | |
| Balu2907 | Quadratic Residues | 25 | |
| ouias | Resisting Bruteforce | 10 | |
| 95ych | Honest Verifier Zero Knowledge | 30 | |
| yurin3440 | Modular Inverting | 25 | |
| cleruu | You either know, XOR you don't | 30 | |
| yurin3440 | Modular Arithmetic 2 | 20 | |
| Balu2907 | Modular Inverting | 25 | |
| Spicezb | Bytes and Big Integers | 10 | |
| Balu2907 | Modular Arithmetic 2 | 20 | |
| 95ych | Special Soundness | 25 | |
| x092646 | Confusion through Substitution | 25 | |
| yurin3440 | Modular Arithmetic 1 | 20 | |
| The7uphero | Modular Arithmetic 1 | 20 | |
| cleruu | Favourite byte | 20 | |
| Balu2907 | Modular Arithmetic 1 | 20 | |
| The7uphero | Extended GCD | 20 | |
| Balu2907 | Extended GCD | 20 | |
| Spicezb | Base64 | 10 | |
| ouias | Keyed Permutations | 5 | |
| cleruu | XOR Properties | 15 | |
| x092646 | Round Keys | 20 | |
| yurin3440 | Extended GCD | 20 | |
| cleruu | XOR Starter | 10 | |
| an4xa | XOR Starter | 10 | |
| DhamoZx | Bytes and Big Integers | 10 | |
| Balu2907 | Greatest Common Divisor | 15 | |
| Spicezb | Hex | 5 | |
| Spicezb | ASCII | 5 | |
| Balu2907 | You either know, XOR you don't | 30 | |
| Spicezb | Great Snakes | 3 | |
| TheWatcher | Extended GCD | 20 |
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