| Date | User | Challenge | Score |
| nullbyte0x00 | Factoring | 15 | |
| noname260 | Modular Inverting | 25 | |
| yinheyaluji | Bringing It All Together | 50 | |
| yinheyaluji | Diffusion through Permutation | 30 | |
| yinheyaluji | Confusion through Substitution | 25 | |
| yinheyaluji | Round Keys | 20 | |
| noname260 | Modular Arithmetic 2 | 20 | |
| noname260 | Modular Arithmetic 1 | 20 | |
| ___K___ | SSH Keys | 35 | |
| jiojio | Greatest Common Divisor | 15 | |
| yinheyaluji | Structure of AES | 15 | |
| Saleh_saleh | Working with Fields | 10 | |
| nashat514 | Bringing It All Together | 50 | |
| yinheyaluji | Resisting Bruteforce | 10 | |
| Saleh_saleh | Private Keys | 20 | |
| yinheyaluji | Keyed Permutations | 5 | |
| boboyaga | Round Keys | 20 | |
| nashat514 | Diffusion through Permutation | 30 | |
| ynwa_ | Transparency | 50 | |
| UserAf | Privacy-Enhanced Mail? | 25 | |
| nashat514 | Confusion through Substitution | 25 | |
| Saleh_saleh | Passwords as Keys | 50 | |
| nashat514 | Round Keys | 20 | |
| tianyuan | You either know, XOR you don't | 30 | |
| alinurlic1 | Network Attacks | 5 | |
| nashat514 | Structure of AES | 15 | |
| tianyuan | Favourite byte | 20 | |
| thinh104az | You either know, XOR you don't | 30 | |
| Ingridius | Hex | 5 | |
| tianyuan | XOR Properties | 15 | |
| LaYo | Finding Flags | 2 | |
| amu | Authentification 2 (Breizh CTF) | 0 | |
| tianyuan | XOR Starter | 10 | |
| nashat514 | Resisting Bruteforce | 10 | |
| Ingridius | ASCII | 5 | |
| nashat514 | Keyed Permutations | 5 | |
| alinurlic1 | XOR Starter | 10 | |
| nashat514 | XOR Properties | 15 | |
| thinh104az | Favourite byte | 20 | |
| tianyuan | Bytes and Big Integers | 10 | |
| nashat514 | XOR Starter | 10 | |
| boboyaga | Structure of AES | 15 | |
| Saleh_saleh | Modes of Operation Starter | 15 | |
| JIoVeTS | Bytes and Big Integers | 10 | |
| alinurlic1 | Bytes and Big Integers | 10 | |
| nullbyte0x00 | RSA Signatures | 25 | |
| nashat514 | Base64 | 10 | |
| noname260 | Extended GCD | 20 | |
| nashat514 | Hex | 5 | |
| jiojio | You either know, XOR you don't | 30 |
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