| Date | User | Challenge | Score |
| xiaoyu123 | Salty | 20 | |
| nerona | ASCII | 5 | |
| darkwww | Hex | 5 | |
| xiaoyu123 | Manyprime | 40 | |
| xYSx | Bytes and Big Integers | 10 | |
| xiaoyu123 | Monoprime | 30 | |
| xiaoyu123 | Factoring | 15 | |
| PanLiqi | RSA Decryption | 20 | |
| darkwww | ASCII | 5 | |
| PanLiqi | Private Keys | 20 | |
| darkwww | Great Snakes | 3 | |
| PanLiqi | Euler's Totient | 20 | |
| darkwww | Finding Flags | 2 | |
| PanLiqi | Public Keys | 15 | |
| _orlordy | Hex | 5 | |
| PanLiqi | Modular Exponentiation | 10 | |
| xYSx | Base64 | 10 | |
| Relearning_again | SSH Keys | 35 | |
| xYSx | Hex | 5 | |
| _orlordy | ASCII | 5 | |
| Relearning_again | CERTainly not | 30 | |
| 64bitbob | Adrien's Signs | 80 | |
| mercury | Finding Flags | 2 | |
| Jossu | Confusion through Substitution | 25 | |
| xYSx | ASCII | 5 | |
| youssef_reda | Efficient Exchange | 50 | |
| _orlordy | Great Snakes | 3 | |
| Jossu | Round Keys | 20 | |
| _orlordy | Finding Flags | 2 | |
| Relearning_again | Privacy-Enhanced Mail? | 25 | |
| 64bitbob | Chinese Remainder Theorem | 40 | |
| Hexerei | Bytes and Big Integers | 10 | |
| joko | RSA or HMAC? | 35 | |
| moonlit | You either know, XOR you don't | 30 | |
| 64bitbob | Modular Square Root | 35 | |
| purplemak | Finding Flags | 2 | |
| knh6393 | Efficient Exchange | 50 | |
| joko | JWT Secrets | 25 | |
| Pajardo2012Fer | Finding Flags | 2 | |
| Jossu | Structure of AES | 15 | |
| solomondel | Resisting Bruteforce | 10 | |
| solomondel | Keyed Permutations | 5 | |
| knh6393 | Curves and Logs | 40 | |
| solomondel | Modular Binomials | 80 | |
| moonlit | Favourite byte | 20 | |
| knh6393 | Scalar Multiplication | 35 | |
| solomondel | Adrien's Signs | 80 | |
| moonlit | XOR Properties | 15 | |
| solomondel | Chinese Remainder Theorem | 40 | |
| Jossu | Resisting Bruteforce | 10 |
You are now level Current level