| Date | User | Challenge | Score |
| Celer | Bytes and Big Integers | 10 | |
| TheDengler | Finding Flags | 2 | |
| shinxy | Round Keys | 20 | |
| KryptoUser | Privacy-Enhanced Mail? | 25 | |
| Odds | You either know, XOR you don't | 30 | |
| mboh2 | Infinite Descent | 50 | |
| Odds | Favourite byte | 20 | |
| Odds | XOR Properties | 15 | |
| shinxy | Structure of AES | 15 | |
| Odds | XOR Starter | 10 | |
| Nikshay | ASCII | 5 | |
| nicolasromito330 | Lemur XOR | 40 | |
| Odds | Bytes and Big Integers | 10 | |
| Nikshay | Great Snakes | 3 | |
| Nikshay | Finding Flags | 2 | |
| KryptoUser | Modular Inverting | 25 | |
| Bendakid | XOR Starter | 10 | |
| alsofiani | ASCII | 5 | |
| Odds | Base64 | 10 | |
| nji4bmc5l | Resisting Bruteforce | 10 | |
| alsofiani | Great Snakes | 3 | |
| Makawett | Bean Counter | 60 | |
| Odds | Hex | 5 | |
| alsofiani | Finding Flags | 2 | |
| abasorus | XOR Starter | 10 | |
| Odds | ASCII | 5 | |
| Odds | Great Snakes | 3 | |
| nji4bmc5l | Keyed Permutations | 5 | |
| alsofiani | Confusion through Substitution | 25 | |
| 25521051 | Modular Arithmetic 1 | 20 | |
| Bendakid | Bytes and Big Integers | 10 | |
| nicolasromito330 | You either know, XOR you don't | 30 | |
| ShadowXX | Great Snakes | 3 | |
| muhamme | Great Snakes | 3 | |
| Odds | Finding Flags | 2 | |
| ShadowXX | Finding Flags | 2 | |
| KryptoUser | Modular Arithmetic 2 | 20 | |
| muhamme | Finding Flags | 2 | |
| alsofiani | Computing Public Values | 25 | |
| KryptoUser | Modular Arithmetic 1 | 20 | |
| Bendakid | Base64 | 10 | |
| Bendakid | Hex | 5 | |
| 25521051 | Extended GCD | 20 | |
| nicolasromito330 | Favourite byte | 20 | |
| Bendakid | ASCII | 5 | |
| alsofiani | RSA Signatures | 25 | |
| Bendakid | Great Snakes | 3 | |
| Bendakid | Finding Flags | 2 | |
| 25521051 | Greatest Common Divisor | 15 | |
| KryptoUser | Extended GCD | 20 |
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