| Date | User | Challenge | Score |
| rotated | Legendre Symbol | 35 | |
| tackmin1204 | WOTS Up 2 | 90 | |
| chinmoy_paul | Signing Server | 60 | |
| MAshq | Great Snakes | 3 | |
| Tusca | Great Snakes | 3 | |
| MAshq | Finding Flags | 2 | |
| rotated | Quadratic Residues | 25 | |
| soleman | Greatest Common Divisor | 15 | |
| rotated | Modular Inverting | 25 | |
| rotated | Modular Arithmetic 2 | 20 | |
| rotated | Modular Arithmetic 1 | 20 | |
| rotated | Extended GCD | 20 | |
| lucky123 | Modes of Operation Starter | 15 | |
| Tusca | Finding Flags | 2 | |
| rotated | Greatest Common Divisor | 15 | |
| rotated | You either know, XOR you don't | 30 | |
| Rthterm | Finding Flags | 2 | |
| camo132108 | Passwords as Keys | 50 | |
| rotated | Favourite byte | 20 | |
| rotated | XOR Properties | 15 | |
| smclara2005 | Bean Counter | 60 | |
| rotated | XOR Starter | 10 | |
| rotated | Bytes and Big Integers | 10 | |
| 048224 | Bean Counter | 60 | |
| 048224 | Symmetry | 50 | |
| 048224 | Lazy CBC | 60 | |
| caffeine27 | Bean Counter | 60 | |
| joko | Structure of AES | 15 | |
| chinmoy_paul | Modulus Inutilis | 50 | |
| chinmoy_paul | Salty | 20 | |
| KMA_SiriuS_ | Diffusion through Permutation | 30 | |
| monkeyDluffy | XOR Properties | 15 | |
| chinmoy_paul | Factoring | 15 | |
| chinmoy_paul | RSA Decryption | 20 | |
| chinmoy_paul | Private Keys | 20 | |
| chinmoy_paul | Euler's Totient | 20 | |
| p1ink0 | Bean Counter | 60 | |
| Ruel | Confusion through Substitution | 25 | |
| p1ink0 | Symmetry | 50 | |
| p1ink0 | Flipping Cookie | 60 | |
| p1ink0 | ECB CBC WTF | 55 | |
| erickao | Greatest Common Divisor | 15 | |
| p1ink0 | ECB Oracle | 60 | |
| p1ink0 | Passwords as Keys | 50 | |
| p1ink0 | Modes of Operation Starter | 15 | |
| ungjae | ECB CBC WTF | 55 | |
| p1ink0 | Bringing It All Together | 50 | |
| caspeer | Greatest Common Divisor | 15 | |
| p1ink0 | Diffusion through Permutation | 30 | |
| chinmoy_paul | Public Keys | 15 |
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