| Date | User | Challenge | Score |
| nguyenvietkhoa | Bytes and Big Integers | 10 | |
| pepperoni21 | Confusion through Substitution | 25 | |
| owoovo | ASCII | 5 | |
| NeelayPuranik | Chinese Remainder Theorem | 40 | |
| owoovo | Great Snakes | 3 | |
| nguyenvietkhoa | Base64 | 10 | |
| new2 | Parameter Injection | 60 | |
| PurplePrrince | ASCII | 5 | |
| bbaoaanh | Parameter Injection | 60 | |
| eneo | Modular Arithmetic 1 | 20 | |
| bncybz | Modular Arithmetic 1 | 20 | |
| PurplePrrince | Great Snakes | 3 | |
| F0rhex | Modulus Inutilis | 50 | |
| alexjj | XOR Starter | 10 | |
| PurplePrrince | Finding Flags | 2 | |
| nguyenvietkhoa | Hex | 5 | |
| alexjj | Bytes and Big Integers | 10 | |
| new2 | Deriving Symmetric Keys | 40 | |
| pepperoni21 | Round Keys | 20 | |
| nguyenvietkhoa | ASCII | 5 | |
| AgileOrc | Curves and Logs | 40 | |
| engman | Crossed Wires | 100 | |
| nguyenvietkhoa | Great Snakes | 3 | |
| F0rhex | Salty | 20 | |
| nguyenvietkhoa | Finding Flags | 2 | |
| owoovo | Finding Flags | 2 | |
| Abilmansur_Daure | Euler's Totient | 20 | |
| Amat2s | Passwords as Keys | 50 | |
| new2 | Computing Shared Secrets | 30 | |
| quangntenemy | Roll your Own | 125 | |
| new2 | Computing Public Values | 25 | |
| pepperoni21 | Structure of AES | 15 | |
| Abilmansur_Daure | Public Keys | 15 | |
| Abilmansur_Daure | Modular Exponentiation | 10 | |
| new2 | Generators of Groups | 20 | |
| pepperoni21 | Resisting Bruteforce | 10 | |
| rush_i | Modular Square Root | 35 | |
| alexjj | Great Snakes | 3 | |
| aliarkan | Base64 | 10 | |
| Amat2s | Modes of Operation Starter | 15 | |
| pepperoni21 | Keyed Permutations | 5 | |
| SMAYLA | Quadratic Residues | 25 | |
| x314x | Modular Arithmetic 1 | 20 | |
| ub_krypto_25_04 | Resisting Bruteforce | 10 | |
| Amat2s | Bringing It All Together | 50 | |
| ub_krypto_25_04 | Keyed Permutations | 5 | |
| luegac21 | Round Keys | 20 | |
| bncybz | Extended GCD | 20 | |
| Quine | Find the Lattice | 100 | |
| x314x | Extended GCD | 20 |
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