| Date | User | Challenge | Score |
| jackoha | Real Eisenstein | 150 | |
| MrRaven | Public Keys | 15 | |
| ghovhann | Salty | 20 | |
| zero98 | Modular Arithmetic 1 | 20 | |
| MrRaven | Modular Exponentiation | 10 | |
| Eday | Bean Counter | 60 | |
| Eday | Symmetry | 50 | |
| Eday | Flipping Cookie | 60 | |
| wangdi7670 | Finding Flags | 2 | |
| CryptoToT | Chinese Remainder Theorem | 40 | |
| wapoy64924 | Passwords as Keys | 50 | |
| Eday | ECB CBC WTF | 55 | |
| Eday | ECB Oracle | 60 | |
| jep | Structure of AES | 15 | |
| wapoy64924 | Modes of Operation Starter | 15 | |
| jep | Resisting Bruteforce | 10 | |
| Snoc | Modes of Operation Starter | 15 | |
| Micoobeast | Bytes and Big Integers | 10 | |
| CryptoToT | Modular Square Root | 35 | |
| Snoc | Bringing It All Together | 50 | |
| Eday | Passwords as Keys | 50 | |
| Micoobeast | Base64 | 10 | |
| Eday | Modes of Operation Starter | 15 | |
| MuniraXudoyberga | Base64 | 10 | |
| olivervc12 | Bytes and Big Integers | 10 | |
| Micoobeast | Hex | 5 | |
| olivervc12 | Base64 | 10 | |
| Ah_Crypto2 | Chinese Remainder Theorem | 40 | |
| olivervc12 | Hex | 5 | |
| wapoy64924 | Bringing It All Together | 50 | |
| yksec | Lemur XOR | 40 | |
| yzy | RSA Signatures | 25 | |
| Snoc | Diffusion through Permutation | 30 | |
| Hez | Bean Counter | 60 | |
| Micoobeast | ASCII | 5 | |
| Hez | Symmetry | 50 | |
| Hez | Flipping Cookie | 60 | |
| wapoy64924 | Diffusion through Permutation | 30 | |
| jep | Quadratic Residues | 25 | |
| Hez | ECB CBC WTF | 55 | |
| jep | Modular Inverting | 25 | |
| jep | Modular Arithmetic 2 | 20 | |
| wapoy64924 | Confusion through Substitution | 25 | |
| Hez | ECB Oracle | 60 | |
| jep | Modular Arithmetic 1 | 20 | |
| jep | Extended GCD | 20 | |
| wapoy64924 | Round Keys | 20 | |
| Hez | Passwords as Keys | 50 | |
| jep | Greatest Common Divisor | 15 | |
| Hez | Modes of Operation Starter | 15 |
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