| Date | User | Challenge | Score |
| k8lyn1298 | XOR Properties | 15 | |
| Kelakotana | Finding Flags | 2 | |
| antoario | Lemur XOR | 40 | |
| VxRabbit | XOR Properties | 15 | |
| elgatik | Euler's Totient | 20 | |
| Ciberhunter | Great Snakes | 3 | |
| Ciberhunter | Finding Flags | 2 | |
| Sugr33va | Bytes and Big Integers | 10 | |
| antoario | You either know, XOR you don't | 30 | |
| kotoha_knth | Private Keys | 20 | |
| kotoha_knth | Euler's Totient | 20 | |
| antoario | Favourite byte | 20 | |
| antoario | XOR Properties | 15 | |
| squ4r00t | Diffusion through Permutation | 30 | |
| kotoha_knth | Public Keys | 15 | |
| kotoha_knth | Modular Exponentiation | 10 | |
| k8lyn1298 | XOR Starter | 10 | |
| Chiaz98 | Finding Flags | 2 | |
| At0mxploit | Transparency | 50 | |
| At0mxploit | SSH Keys | 35 | |
| antoario | XOR Starter | 10 | |
| At0mxploit | CERTainly not | 30 | |
| k8lyn1298 | Bytes and Big Integers | 10 | |
| antoario | Encoding Challenge | 40 | |
| At0mxploit | Privacy-Enhanced Mail? | 25 | |
| At0mxploit | Lemur XOR | 40 | |
| At0mxploit | Encoding Challenge | 40 | |
| quantum_cracking | ECB CBC WTF | 55 | |
| At0mxploit | Network Attacks | 5 | |
| m0r1 | Checkpoint | 150 | |
| k8lyn1298 | Base64 | 10 | |
| 0x00696e6964756f | No Way Back Home | 100 | |
| drtijij | Base64 | 10 | |
| k8lyn1298 | Hex | 5 | |
| drtijij | Hex | 5 | |
| trcmaster | ECB CBC WTF | 55 | |
| interrupt | Modes of Operation Starter | 15 | |
| k8lyn1298 | ASCII | 5 | |
| jeroencryptohack | Montgomery's Ladder | 40 | |
| drtijij | ASCII | 5 | |
| interrupt | Bringing It All Together | 50 | |
| k8lyn1298 | Great Snakes | 3 | |
| tutututu | You either know, XOR you don't | 30 | |
| anacin27 | Modular Binomials | 80 | |
| LTaki | Modular Square Root | 35 | |
| k8lyn1298 | Finding Flags | 2 | |
| drtijij | Great Snakes | 3 | |
| A2RU | Deriving Symmetric Keys | 40 | |
| A2RU | Computing Shared Secrets | 30 | |
| A2RU | Computing Public Values | 25 |
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