| Date | User | Challenge | Score |
| ck0d | Deriving Symmetric Keys | 40 | |
| DahliaSR | ECB CBC WTF | 55 | |
| THEX | Network Attacks | 5 | |
| shamandeer | Base64 | 10 | |
| hakka52 | Montgomery's Ladder | 40 | |
| ck0d | Computing Shared Secrets | 30 | |
| genesiscy | Bytes and Big Integers | 10 | |
| AceNk | Flipping Cookie | 60 | |
| scubanac | ASCII | 5 | |
| scubanac | Great Snakes | 3 | |
| scubanac | Finding Flags | 2 | |
| ernesto_salgado | Bytes and Big Integers | 10 | |
| ernesto_salgado | Base64 | 10 | |
| Blood_Deckker | Great Snakes | 3 | |
| aferrazzi | Base64 | 10 | |
| ernesto_salgado | Hex | 5 | |
| AceNk | ECB CBC WTF | 55 | |
| xabdelrahmanx | Base64 | 10 | |
| aferrazzi | Hex | 5 | |
| ernesto_salgado | ASCII | 5 | |
| aferrazzi | ASCII | 5 | |
| aferrazzi | Network Attacks | 5 | |
| AceNk | ECB Oracle | 60 | |
| aferrazzi | Great Snakes | 3 | |
| aferrazzi | Finding Flags | 2 | |
| vatsal_nayak | Base64 | 10 | |
| Neutr0nys | Blinding Light | 120 | |
| vatsal_nayak | Hex | 5 | |
| ck0d | Computing Public Values | 25 | |
| vatsal_nayak | ASCII | 5 | |
| JashB1 | You either know, XOR you don't | 30 | |
| JashB1 | Favourite byte | 20 | |
| vatsal_nayak | Great Snakes | 3 | |
| JashB1 | XOR Properties | 15 | |
| JashB1 | XOR Starter | 10 | |
| vatsal_nayak | Finding Flags | 2 | |
| JashB1 | Bytes and Big Integers | 10 | |
| Kronx12 | Privacy-Enhanced Mail? | 25 | |
| votranngocvy | Computing Public Values | 25 | |
| rafaelperezio | Extended GCD | 20 | |
| Gryfman | Modular Inverting | 25 | |
| Galois | Find the Lattice | 100 | |
| Gryfman | Modular Arithmetic 2 | 20 | |
| AceNk | Passwords as Keys | 50 | |
| ikael | Manyprime | 40 | |
| CryptoFun | Quadratic Residues | 25 | |
| AceNk | Modes of Operation Starter | 15 | |
| CryptoFun | Modular Inverting | 25 | |
| votranngocvy | Generators of Groups | 20 | |
| CryptoFun | Modular Arithmetic 2 | 20 |
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