| Date | User | Challenge | Score |
| isaac2289 | XOR Starter | 10 | |
| linger | Finding Flags | 2 | |
| interrupt | ECB CBC WTF | 55 | |
| Cheshirelover | Modular Arithmetic 1 | 20 | |
| shynt04 | Deriving Symmetric Keys | 40 | |
| QWXXHSX123 | XOR Properties | 15 | |
| shynt04 | Computing Shared Secrets | 30 | |
| shynt04 | Computing Public Values | 25 | |
| i_like_ack | A Joke Cipher (HKCERT CTF) | 0 | |
| SendIt | A Joke Cipher (HKCERT CTF) | 0 | |
| dolphinned | Finding Flags | 2 | |
| shynt04 | Generators of Groups | 20 | |
| interrupt | ECB Oracle | 60 | |
| ngynmq | Efficient Exchange | 50 | |
| jhh0406 | Prime and Prejudice | 200 | |
| AESpider | Montgomery Curves | 30 | |
| GHL | Broken RSA | 100 | |
| Cheshirelover | Greatest Common Divisor | 15 | |
| AESpider | Image Point Arithmetic | 30 | |
| ngynmq | Curves and Logs | 40 | |
| gathman | You either know, XOR you don't | 30 | |
| dgalarza | Modular Arithmetic 1 | 20 | |
| dgalarza | ASCII | 5 | |
| gathman | Favourite byte | 20 | |
| ngynmq | Scalar Multiplication | 35 | |
| ngynmq | Point Addition | 30 | |
| stapat | Find the Lattice | 100 | |
| interrupt | Passwords as Keys | 50 | |
| ZeP_Wolfox | Base64 | 10 | |
| ABOUBAKR27 | Ron was Wrong, Whit is Right | 90 | |
| ZeP_Wolfox | Hex | 5 | |
| CryptoKnight | RSA Signatures | 25 | |
| milaiscute | Export-grade | 100 | |
| milaiscute | Parameter Injection | 60 | |
| stapat | Gaussian Reduction | 50 | |
| lcalvie | Generators of Groups | 20 | |
| abera | Base64 | 10 | |
| Aloutrance | Chinese Remainder Theorem | 40 | |
| abera | Hex | 5 | |
| stapat | What's a Lattice? | 40 | |
| abera | ASCII | 5 | |
| azan121468 | Point Addition | 30 | |
| abera | Great Snakes | 3 | |
| m4r13mXD | Legendre Symbol | 35 | |
| kilpom | Bytes and Big Integers | 10 | |
| abera | Finding Flags | 2 | |
| stapat | Gram Schmidt | 30 | |
| azan121468 | Point Negation | 10 | |
| AESpider | Where's the Supersingular Curve | 25 | |
| stapat | Size and Basis | 15 |
You are now level Current level