| Date | User | Challenge | Score |
| shyguy | XOR Starter | 10 | |
| shyguy | Bytes and Big Integers | 10 | |
| shyguy | Network Attacks | 5 | |
| Abel_80 | Factoring | 15 | |
| shyguy | Base64 | 10 | |
| vaporwavedrifter | Favourite byte | 20 | |
| shyguy | Hex | 5 | |
| Abel_80 | RSA Signatures | 25 | |
| vaporwavedrifter | XOR Properties | 15 | |
| shyguy | ASCII | 5 | |
| shyguy | Great Snakes | 3 | |
| crowcell | Confusion through Substitution | 25 | |
| Abel_80 | Triple DES | 60 | |
| astelor | From Private to Public Key LWE | 25 | |
| Folgee | Great Snakes | 3 | |
| 4R60 | Modular Inverting | 25 | |
| siriusraven | Moving Problems | 150 | |
| shyguy | Finding Flags | 2 | |
| petr | Legendre Symbol | 35 | |
| vdam | Curves and Logs | 40 | |
| astelor | Backpack Cryptography | 120 | |
| Pranathi150306 | Great Snakes | 3 | |
| Abel_80 | Lazy CBC | 60 | |
| vdam | Scalar Multiplication | 35 | |
| zabble | Bytes and Big Integers | 10 | |
| vaporwavedrifter | XOR Starter | 10 | |
| vaporwavedrifter | Bytes and Big Integers | 10 | |
| gruenerheli | Legendre Symbol | 35 | |
| 4R60 | Modular Arithmetic 2 | 20 | |
| Abel_80 | Flipping Cookie | 60 | |
| vdam | Point Addition | 30 | |
| crazywolfy | Confusion through Substitution | 25 | |
| zabble | Base64 | 10 | |
| vaporwavedrifter | Base64 | 10 | |
| zabble | Hex | 5 | |
| zabble | ASCII | 5 | |
| Ronaks | Base64 | 10 | |
| vaporwavedrifter | Hex | 5 | |
| zabble | Great Snakes | 3 | |
| crazywolfy | Round Keys | 20 | |
| dsferreira | Chinese Remainder Theorem | 40 | |
| vaporwavedrifter | ASCII | 5 | |
| crazywolfy | Structure of AES | 15 | |
| crowcell | Round Keys | 20 | |
| zabble | Finding Flags | 2 | |
| vaporwavedrifter | Great Snakes | 3 | |
| 4R60 | Modular Arithmetic 1 | 20 | |
| crazywolfy | Resisting Bruteforce | 10 | |
| dsferreira | Modular Square Root | 35 | |
| gruenerheli | Quadratic Residues | 25 |
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