| Date | User | Challenge | Score |
| sahil | Keyed Permutations | 5 | |
| minshay | Triple DES | 60 | |
| ciphermk | Modular Square Root | 35 | |
| DavidTruong | Let's Decrypt Again | 175 | |
| devteam_glenn14 | Finding Flags | 2 | |
| cepreusa | An Exceptional Twisted Mind | 125 | |
| cepreusa | Checkpoint | 150 | |
| HighestClimber | Adrien's Signs | 80 | |
| regalast | Unencryptable | 125 | |
| sasytaco802 | Roll your Own | 125 | |
| regalast | Roll your Own | 125 | |
| regalast | Ellipse Curve Cryptography | 125 | |
| regalast | Modular Binomials | 80 | |
| regalast | Adrien's Signs | 80 | |
| dudeisme | Quadratic Residues | 25 | |
| yr81 | Cofactor Cofantasy | 150 | |
| cepreusa | MD0 | 80 | |
| cepreusa | WOTS Up 2 | 90 | |
| cepreusa | WOTS Up | 75 | |
| cepreusa | No Difference | 175 | |
| cepreusa | Collider | 50 | |
| cepreusa | Merkle Trees | 25 | |
| cepreusa | Jack's Birthday Confusion | 30 | |
| cepreusa | Jack's Birthday Hash | 20 | |
| cepreusa | A Twisted Mind | 80 | |
| cepreusa | Digestive | 60 | |
| thedobs | Bytes and Big Integers | 10 | |
| ethereal_666 | You either know, XOR you don't | 30 | |
| TotPro | Modular Exponentiation | 10 | |
| cepreusa | The Matrix Revolutions | 125 | |
| cepreusa | The Matrix Reloaded | 100 | |
| qwra | Square Eyes | 35 | |
| agoyis | ASCII | 5 | |
| ethereal_666 | Favourite byte | 20 | |
| yy8ay | Bean Counter | 60 | |
| agoyis | Great Snakes | 3 | |
| cepreusa | ProSign 3 | 100 | |
| cepreusa | Curveball | 100 | |
| agoyis | Finding Flags | 2 | |
| qwra | Monoprime | 30 | |
| cepreusa | No Random, No Bias | 120 | |
| cepreusa | Moving Problems | 150 | |
| cepreusa | Exceptional Curves | 100 | |
| ethereal_666 | XOR Properties | 15 | |
| regalast | Parameter Injection | 60 | |
| regalast | Deriving Symmetric Keys | 40 | |
| regalast | Computing Shared Secrets | 30 | |
| regalast | Generators of Groups | 20 | |
| regalast | Working with Fields | 10 | |
| CriptOnec | Bytes and Big Integers | 10 |
You are now level Current level