| Date | User | Challenge | Score |
| kiranadea1701 | Modes of Operation Starter | 15 | |
| Razza | Flipping Cookie | 60 | |
| alykacitra | Computing Shared Secrets | 30 | |
| lulih | Public Keys | 15 | |
| The_cryptic | Extended GCD | 20 | |
| alykacitra | Computing Public Values | 25 | |
| P3ekaboo | XOR Starter | 10 | |
| alykacitra | Generators of Groups | 20 | |
| alykacitra | Working with Fields | 10 | |
| Razza | ECB CBC WTF | 55 | |
| angelinafr | Quadratic Residues | 25 | |
| Dipalisnapadilah | Export-grade | 100 | |
| Dipalisnapadilah | Parameter Injection | 60 | |
| lulih | Modular Exponentiation | 10 | |
| Dipalisnapadilah | Deriving Symmetric Keys | 40 | |
| Dipalisnapadilah | Computing Shared Secrets | 30 | |
| luispalumbo | Great Snakes | 3 | |
| angelinafr | Modular Inverting | 25 | |
| The_cryptic | Greatest Common Divisor | 15 | |
| siti | Finding Flags | 2 | |
| Dipalisnapadilah | Computing Public Values | 25 | |
| angelinafr | Modular Arithmetic 2 | 20 | |
| angelinafr | Modular Arithmetic 1 | 20 | |
| kiranadea1701 | Bringing It All Together | 50 | |
| angelinafr | Extended GCD | 20 | |
| Razza | ECB Oracle | 60 | |
| angelinafr | Greatest Common Divisor | 15 | |
| Razza | Passwords as Keys | 50 | |
| Kouh | XOR Properties | 15 | |
| mengli | Keyed Permutations | 5 | |
| n30nx | Endless Emails | 150 | |
| atha123 | XOR Properties | 15 | |
| Razza | Modes of Operation Starter | 15 | |
| kiranadea1701 | Diffusion through Permutation | 30 | |
| Razza | Bringing It All Together | 50 | |
| agnesilaban_ | Modulus Inutilis | 50 | |
| Razza | Diffusion through Permutation | 30 | |
| Razza | Confusion through Substitution | 25 | |
| Razza | Round Keys | 20 | |
| Levinia_1506 | Greatest Common Divisor | 15 | |
| Razza | Structure of AES | 15 | |
| Z3U55 | Roll your Own | 125 | |
| Razza | Resisting Bruteforce | 10 | |
| agnesilaban_ | Salty | 20 | |
| galchapman | The Matrix Reloaded | 100 | |
| lucasornelas705 | Base64 | 10 | |
| Razza | Keyed Permutations | 5 | |
| Razza | Modular Binomials | 80 | |
| n30nx | Everything is Still Big | 100 | |
| kiranadea1701 | Confusion through Substitution | 25 |
You are now level Current level