| Date | User | Challenge | Score |
| mechadoodle123 | Quadratic Residues | 25 | |
| NieF | XOR Starter | 10 | |
| chrischako | Gram Schmidt | 30 | |
| gabby | XOR Properties | 15 | |
| Helgbob | Favourite byte | 20 | |
| NieF | Encoding Challenge | 40 | |
| noobboymk | Private Keys | 20 | |
| Ter3Sni | Privacy-Enhanced Mail? | 25 | |
| nwal | Working with Fields | 10 | |
| Helgbob | XOR Properties | 15 | |
| chrischako | Size and Basis | 15 | |
| Ter3Sni | Lemur XOR | 40 | |
| mariotronix | Adrien's Signs | 80 | |
| chrischako | Vectors | 10 | |
| noobboymk | Euler's Totient | 20 | |
| noobboymk | Public Keys | 15 | |
| fenzmarimari | XOR Properties | 15 | |
| summerdragon322 | XOR Starter | 10 | |
| warsom77 | Quadratic Residues | 25 | |
| noobboymk | Modular Exponentiation | 10 | |
| khanhlm091 | Bean Counter | 60 | |
| Helgbob | XOR Starter | 10 | |
| Raodaz | Modular Square Root | 35 | |
| chrischako | Secure Protocols | 5 | |
| Raodaz | Legendre Symbol | 35 | |
| Helgbob | Bytes and Big Integers | 10 | |
| chrischako | JWT Secrets | 25 | |
| Agnumen | Finding Flags | 2 | |
| Marco89 | Gram Schmidt | 30 | |
| miksquared | Infinite Descent | 50 | |
| User0069 | Backpack Cryptography | 120 | |
| tarujohanak | Base64 | 10 | |
| Helgbob | Base64 | 10 | |
| Ter3Sni | Encoding Challenge | 40 | |
| miksquared | Everything is Still Big | 100 | |
| tarujohanak | Hex | 5 | |
| mechadoodle123 | Modular Inverting | 25 | |
| Helgbob | Hex | 5 | |
| mechadoodle123 | Modular Arithmetic 2 | 20 | |
| Arvis | 2020 (TETCTF) | 0 | |
| Helgbob | ASCII | 5 | |
| Arvis | 1337crypt (DownUnderCTF) | 0 | |
| mahrusq | You either know, XOR you don't | 30 | |
| Helgbob | Great Snakes | 3 | |
| Marco89 | Size and Basis | 15 | |
| mahrusq | Favourite byte | 20 | |
| allowu | Export-grade | 100 | |
| Helgbob | Finding Flags | 2 | |
| IOSA | JWT Sessions | 10 | |
| tarujohanak | ASCII | 5 |
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