| Date | User | Challenge | Score |
| zeed17 | You either know, XOR you don't | 30 | |
| Dytzi | Hex | 5 | |
| alfred001gr | XOR Starter | 10 | |
| demr | Point Negation | 10 | |
| Dytzi | ASCII | 5 | |
| 009 | Passwords as Keys | 50 | |
| Dytzi | Great Snakes | 3 | |
| lapa | Modular Arithmetic 1 | 20 | |
| lapa | Extended GCD | 20 | |
| aranza | Finding Flags | 2 | |
| Samigo | Salty | 20 | |
| alfred001gr | Bytes and Big Integers | 10 | |
| 009 | Modes of Operation Starter | 15 | |
| HighestClimber | Factoring | 15 | |
| toothy | Great Snakes | 3 | |
| toothy | Finding Flags | 2 | |
| 009 | Bringing It All Together | 50 | |
| HighestClimber | RSA Signatures | 25 | |
| matiosos | You either know, XOR you don't | 30 | |
| Waaswas | XOR Properties | 15 | |
| m1rabil1z | Chinese Remainder Theorem | 40 | |
| Cerades | Bespoke Padding | 100 | |
| Liel | Base64 | 10 | |
| Waaswas | XOR Starter | 10 | |
| PrinfD | RSA Signatures | 25 | |
| Liel | Hex | 5 | |
| sakshamy123 | XOR Starter | 10 | |
| Cerades | RSA Backdoor Viability | 175 | |
| aravhacks | Modular Inverting | 25 | |
| jskeob | Collider | 50 | |
| zeed17 | Favourite byte | 20 | |
| qnqlwenflq | Confusion through Substitution | 25 | |
| MahmoodTavafoghi | Resisting Bruteforce | 10 | |
| Ariee | Great Snakes | 3 | |
| lapa | Greatest Common Divisor | 15 | |
| MahmoodTavafoghi | Keyed Permutations | 5 | |
| qnqlwenflq | Round Keys | 20 | |
| Ariee | Finding Flags | 2 | |
| zeed17 | XOR Properties | 15 | |
| persianmfr | Great Snakes | 3 | |
| qnqlwenflq | Structure of AES | 15 | |
| persianmfr | Finding Flags | 2 | |
| CodeFate | Scalar Multiplication | 35 | |
| hanahiennguyen | Bespoke Padding | 100 | |
| zeed17 | XOR Starter | 10 | |
| crypto_saka_hack | No Leaks | 100 | |
| sakshamy123 | Base64 | 10 | |
| qnqlwenflq | Resisting Bruteforce | 10 | |
| qnqlwenflq | Keyed Permutations | 5 | |
| matiosos | Favourite byte | 20 |
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