| Date | User | Challenge | Score |
| Kcdff | Modular Inverting | 25 | |
| DQH | Ellipse Curve Cryptography | 125 | |
| safwan | Structure of AES | 15 | |
| magx27 | Bytes and Big Integers | 10 | |
| wojtunio19 | Modular Exponentiation | 10 | |
| wojtunio19 | Public Keys | 15 | |
| wojtunio19 | Euler's Totient | 20 | |
| wojtunio19 | Private Keys | 20 | |
| wojtunio19 | RSA Decryption | 20 | |
| BROMIN | Factoring | 15 | |
| safwan | Resisting Bruteforce | 10 | |
| pookpook | ASCII | 5 | |
| safwan | Keyed Permutations | 5 | |
| pookpook | Great Snakes | 3 | |
| safwan | Transparency | 50 | |
| pookpook | Finding Flags | 2 | |
| Kcdff | Modular Arithmetic 2 | 20 | |
| Sylvan | Structure of AES | 15 | |
| annieweb | ASCII | 5 | |
| caesuki | Chinese Remainder Theorem | 40 | |
| caesuki | Modular Square Root | 35 | |
| caesuki | Legendre Symbol | 35 | |
| Krin4 | Base64 | 10 | |
| YessetovaLi | Bringing It All Together | 50 | |
| caesuki | Quadratic Residues | 25 | |
| caesuki | Modular Inverting | 25 | |
| caesuki | Modular Arithmetic 2 | 20 | |
| caesuki | Modular Arithmetic 1 | 20 | |
| vermelho | XOR Properties | 15 | |
| caesuki | Extended GCD | 20 | |
| Pentaquark | Round Keys | 20 | |
| Kcdff | Modular Arithmetic 1 | 20 | |
| safwan | SSH Keys | 35 | |
| LeonTL | Null or Never | 100 | |
| caesuki | Greatest Common Divisor | 15 | |
| BROMIN | RSA Signatures | 25 | |
| Kcdff | Extended GCD | 20 | |
| safwan | CERTainly not | 30 | |
| v3llocet | Greatest Common Divisor | 15 | |
| Pentaquark | Transparency | 50 | |
| safwan | Privacy-Enhanced Mail? | 25 | |
| leuge | Legendre Symbol | 35 | |
| NECROTOXIN | Finding Flags | 2 | |
| annieweb | Great Snakes | 3 | |
| safwan | Modular Inverting | 25 | |
| safwan | Modular Arithmetic 2 | 20 | |
| safwan | Modular Arithmetic 1 | 20 | |
| safwan | Extended GCD | 20 | |
| safwan | Greatest Common Divisor | 15 | |
| safwan | Lemur XOR | 40 |
You are now level Current level