| Date | User | Challenge | Score |
| KowalskiVan | Bringing It All Together | 50 | |
| KowalskiVan | Diffusion through Permutation | 30 | |
| KowalskiVan | Confusion through Substitution | 25 | |
| KowalskiVan | Round Keys | 20 | |
| KowalskiVan | Structure of AES | 15 | |
| KowalskiVan | Resisting Bruteforce | 10 | |
| KowalskiVan | Keyed Permutations | 5 | |
| KowalskiVan | Real Eisenstein | 150 | |
| KowalskiVan | Cofactor Cofantasy | 150 | |
| KowalskiVan | Roll your Own | 125 | |
| laraahumberto | XOR Starter | 10 | |
| KowalskiVan | Ellipse Curve Cryptography | 125 | |
| KowalskiVan | Unencryptable | 125 | |
| KowalskiVan | No Way Back Home | 100 | |
| KowalskiVan | Broken RSA | 100 | |
| KowalskiVan | Modular Binomials | 80 | |
| KowalskiVan | Successive Powers | 60 | |
| KowalskiVan | Adrien's Signs | 80 | |
| KowalskiVan | Common Ground | 75 | |
| KowalskiVan | Modular Square Root | 35 | |
| KowalskiVan | Legendre Symbol | 35 | |
| KowalskiVan | Quadratic Residues | 25 | |
| KowalskiVan | Chinese Remainder Theorem | 40 | |
| KowalskiVan | Encoding Challenge | 40 | |
| khatiwadakshitiz | Keyed Permutations | 5 | |
| KowalskiVan | SSH Keys | 35 | |
| KowalskiVan | CERTainly not | 30 | |
| KowalskiVan | Privacy-Enhanced Mail? | 25 | |
| KowalskiVan | Transparency | 50 | |
| KowalskiVan | Modular Inverting | 25 | |
| KowalskiVan | Modular Arithmetic 2 | 20 | |
| KowalskiVan | Modular Arithmetic 1 | 20 | |
| KowalskiVan | Extended GCD | 20 | |
| KowalskiVan | Greatest Common Divisor | 15 | |
| KowalskiVan | You either know, XOR you don't | 30 | |
| KowalskiVan | Favourite byte | 20 | |
| KowalskiVan | XOR Properties | 15 | |
| KowalskiVan | XOR Starter | 10 | |
| KowalskiVan | Lemur XOR | 40 | |
| dikaDzeas | Base64 | 10 | |
| AMORAGA1710 | Resisting Bruteforce | 10 | |
| xiongp | Moving Problems | 150 | |
| xiongp | ProSign 3 | 100 | |
| xiongp | Curveball | 100 | |
| xiongp | Smooth Criminal | 60 | |
| xiongp | Montgomery's Ladder | 40 | |
| xiongp | Efficient Exchange | 50 | |
| xiongp | Curves and Logs | 40 | |
| xiongp | Scalar Multiplication | 35 | |
| AMORAGA1710 | Keyed Permutations | 5 |
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