| Date | User | Challenge | Score |
| L53753 | Extended GCD | 20 | |
| Quoc130370 | Extended GCD | 20 | |
| theegg | Bytes and Big Integers | 10 | |
| MasterLJ | Successive Powers | 60 | |
| john_doe007 | ASCII | 5 | |
| aslpooht | Hex | 5 | |
| aslpooht | ASCII | 5 | |
| theegg | Base64 | 10 | |
| mamun30cse | CERTainly not | 30 | |
| mamun30cse | Privacy-Enhanced Mail? | 25 | |
| theegg | Hex | 5 | |
| mamun30cse | Modular Arithmetic 1 | 20 | |
| theegg | ASCII | 5 | |
| sopobot | Montgomery's Ladder | 40 | |
| theegg | Great Snakes | 3 | |
| john_doe007 | Great Snakes | 3 | |
| aslpooht | Network Attacks | 5 | |
| ian5v | Structure of AES | 15 | |
| MasterLJ | No Way Back Home | 100 | |
| sopobot | Efficient Exchange | 50 | |
| theegg | Finding Flags | 2 | |
| sopobot | Curves and Logs | 40 | |
| sopobot | Scalar Multiplication | 35 | |
| sopobot | Point Addition | 30 | |
| sopobot | Point Negation | 10 | |
| sopobot | Background Reading | 5 | |
| sopobot | Export-grade | 100 | |
| icecrimber | Extended GCD | 20 | |
| mamun30cse | Token Appreciation | 5 | |
| mamun30cse | Extended GCD | 20 | |
| mamun30cse | Greatest Common Divisor | 15 | |
| sopobot | Parameter Injection | 60 | |
| mamun30cse | Lemur XOR | 40 | |
| sopobot | Deriving Symmetric Keys | 40 | |
| aslpooht | Great Snakes | 3 | |
| sopobot | Computing Shared Secrets | 30 | |
| shaikhsahab | Finding Flags | 2 | |
| L53753 | Greatest Common Divisor | 15 | |
| sopobot | Computing Public Values | 25 | |
| sopobot | Generators of Groups | 20 | |
| sopobot | Working with Fields | 10 | |
| sopobot | Modulus Inutilis | 50 | |
| sopobot | Salty | 20 | |
| icecrimber | Greatest Common Divisor | 15 | |
| sopobot | Manyprime | 40 | |
| tenkay | You either know, XOR you don't | 30 | |
| aslpooht | Finding Flags | 2 | |
| starnotes | Modulus Inutilis | 50 | |
| icecrimber | You either know, XOR you don't | 30 | |
| sopobot | Monoprime | 30 |
You are now level Current level