| Date | User | Challenge | Score |
| mnblvck | Base64 | 10 | |
| ign_Hades | Favourite byte | 20 | |
| agentjlrmt | ECB Oracle | 60 | |
| cattt_owo | Modular Inverting | 25 | |
| Zeynep_nova | ASCII | 5 | |
| mnblvck | Hex | 5 | |
| spatino | Vectors | 10 | |
| CountryPANDA | Hex | 5 | |
| Zeynep_nova | Great Snakes | 3 | |
| Surik | Base64 | 10 | |
| CountryPANDA | ASCII | 5 | |
| ign_Hades | XOR Properties | 15 | |
| CountryPANDA | Great Snakes | 3 | |
| fathan_ | Deriving Symmetric Keys | 40 | |
| CYDF1121 | Everything is Still Big | 100 | |
| CountryPANDA | Finding Flags | 2 | |
| mnblvck | ASCII | 5 | |
| JCooker | Modular Square Root | 35 | |
| oslash | Scalar Multiplication | 35 | |
| Z10UD1 | Inferius Prime | 30 | |
| ign_Hades | XOR Starter | 10 | |
| teyo | XOR Properties | 15 | |
| Surik | Hex | 5 | |
| teyo | XOR Starter | 10 | |
| teyo | Bytes and Big Integers | 10 | |
| Lukas99 | You either know, XOR you don't | 30 | |
| fathan_ | Computing Shared Secrets | 30 | |
| teyo | Base64 | 10 | |
| cattt_owo | Modular Arithmetic 2 | 20 | |
| oslash | Point Addition | 30 | |
| teyo | Hex | 5 | |
| Surik | ASCII | 5 | |
| iwalu | Base64 | 10 | |
| teyo | ASCII | 5 | |
| cattt_owo | Modular Arithmetic 1 | 20 | |
| teyo | Great Snakes | 3 | |
| Zeynep_nova | Finding Flags | 2 | |
| IanCrypto | ASCII | 5 | |
| cattt_owo | Extended GCD | 20 | |
| teyo | Finding Flags | 2 | |
| fathan_ | Computing Public Values | 25 | |
| iwalu | Hex | 5 | |
| mlko | Legendre Symbol | 35 | |
| cattt_owo | Greatest Common Divisor | 15 | |
| xnhvhv | Bytes and Big Integers | 10 | |
| kareem_abousheta | XOR Properties | 15 | |
| IanCrypto | Great Snakes | 3 | |
| agentjlrmt | Bringing It All Together | 50 | |
| xnhvhv | Base64 | 10 | |
| origabai | RSA or HMAC? Part 2 | 100 |
You are now level Current level