| Date | User | Challenge | Score |
| caiwenjun | You either know, XOR you don't | 30 | |
| gabriellino1936 | Modular Arithmetic 2 | 20 | |
| Bagadan | Parameter Injection | 60 | |
| caiwenjun | Favourite byte | 20 | |
| svt | XOR Starter | 10 | |
| HalleyInteractiv | Hex | 5 | |
| Prakrit | XOR Starter | 10 | |
| caiwenjun | XOR Properties | 15 | |
| tagucha | Encoding Challenge | 40 | |
| Bagadan | Deriving Symmetric Keys | 40 | |
| Bagadan | Computing Shared Secrets | 30 | |
| tagucha | Bytes and Big Integers | 10 | |
| HalleyInteractiv | ASCII | 5 | |
| Prakrit | Bytes and Big Integers | 10 | |
| HalleyInteractiv | Great Snakes | 3 | |
| Bagadan | Computing Public Values | 25 | |
| Bagadan | Generators of Groups | 20 | |
| HalleyInteractiv | Finding Flags | 2 | |
| jyppi | Great Snakes | 3 | |
| Bagadan | Working with Fields | 10 | |
| Hattmakare | ECB CBC WTF | 55 | |
| Bagadan | Modulus Inutilis | 50 | |
| Bagadan | Salty | 20 | |
| ZUIEKI_kicktv | Quadratic Residues | 25 | |
| Bagadan | Manyprime | 40 | |
| serpentali | XOR Starter | 10 | |
| Bagadan | Monoprime | 30 | |
| Bagadan | Factoring | 15 | |
| Bagadan | RSA Signatures | 25 | |
| Bagadan | RSA Decryption | 20 | |
| Bagadan | Private Keys | 20 | |
| Bagadan | Euler's Totient | 20 | |
| Bagadan | Public Keys | 15 | |
| Bagadan | Modular Exponentiation | 10 | |
| li_haonan | Finding Flags | 2 | |
| caiwenjun | XOR Starter | 10 | |
| li_haonan | You either know, XOR you don't | 30 | |
| li_haonan | Favourite byte | 20 | |
| li_haonan | XOR Properties | 15 | |
| li_haonan | XOR Starter | 10 | |
| li_haonan | Bytes and Big Integers | 10 | |
| li_haonan | Base64 | 10 | |
| li_haonan | Hex | 5 | |
| li_haonan | ASCII | 5 | |
| li_haonan | Great Snakes | 3 | |
| gprendi | Chinese Remainder Theorem | 40 | |
| yennnn | Favourite byte | 20 | |
| serpentali | Bytes and Big Integers | 10 | |
| caiwenjun | Bytes and Big Integers | 10 | |
| ZUIEKI_kicktv | Modular Inverting | 25 |
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