| Date | User | Challenge | Score |
| janolav | ECB Oracle | 60 | |
| trizzzy | You either know, XOR you don't | 30 | |
| AlvaroPardo | Adrien's Signs | 80 | |
| waye2go | XOR Starter | 10 | |
| gabaly | Great Snakes | 3 | |
| trizzzy | Favourite byte | 20 | |
| janolav | Passwords as Keys | 50 | |
| ahmqd | WOTS Up | 75 | |
| xprice | Diffusion through Permutation | 30 | |
| AlvaroPardo | Chinese Remainder Theorem | 40 | |
| janolav | Modes of Operation Starter | 15 | |
| trizzzy | XOR Properties | 15 | |
| GK7Thebigboss | Modular Inverting | 25 | |
| GK7Thebigboss | Modular Arithmetic 2 | 20 | |
| GK7Thebigboss | Modular Arithmetic 1 | 20 | |
| AlvaroPardo | Modular Square Root | 35 | |
| gennadion | Modular Binomials | 80 | |
| gabaly | Finding Flags | 2 | |
| GK7Thebigboss | Extended GCD | 20 | |
| bradkac | RSA Signatures | 25 | |
| xprice | Confusion through Substitution | 25 | |
| lgatto | Working with Fields | 10 | |
| waye2go | Bytes and Big Integers | 10 | |
| janolav | Bringing It All Together | 50 | |
| ys512 | Legendre Symbol | 35 | |
| swan_nessie | Ellipse Curve Cryptography | 125 | |
| lgatto | Modulus Inutilis | 50 | |
| GK7Thebigboss | Greatest Common Divisor | 15 | |
| k1ntoki_ | Finding Flags | 2 | |
| ho_ongvyy | Quadratic Residues | 25 | |
| trizzzy | XOR Starter | 10 | |
| lgatto | Salty | 20 | |
| ho_ongvyy | Modular Inverting | 25 | |
| lgatto | Manyprime | 40 | |
| ho_ongvyy | Modular Arithmetic 2 | 20 | |
| ho_ongvyy | Modular Arithmetic 1 | 20 | |
| gennadion | Round Keys | 20 | |
| lgatto | Monoprime | 30 | |
| janolav | Diffusion through Permutation | 30 | |
| bradkac | RSA Decryption | 20 | |
| ho_ongvyy | Extended GCD | 20 | |
| gennadion | Structure of AES | 15 | |
| james_bredbaand | Modular Arithmetic 2 | 20 | |
| Faulheit | XOR Starter | 10 | |
| xprice | Round Keys | 20 | |
| bradkac | Private Keys | 20 | |
| ho_ongvyy | Greatest Common Divisor | 15 | |
| AdorableSkeleton | Find the Lattice | 100 | |
| crispyleaf | Legendre Symbol | 35 | |
| ho_ongvyy | You either know, XOR you don't | 30 |
You are now level Current level