| Date | User | Challenge | Score |
| johnalonissos | Modular Exponentiation | 10 | |
| gwiazdas | RSA Signatures | 25 | |
| zain110506 | You either know, XOR you don't | 30 | |
| huli07 | Modular Inverting | 25 | |
| florrie | Hex | 5 | |
| batam111 | Generators of Groups | 20 | |
| tereza | Structure of AES | 15 | |
| 0xdaemon | Factoring | 15 | |
| kumar_shivam25 | Great Snakes | 3 | |
| kumar_shivam25 | Finding Flags | 2 | |
| batam111 | Working with Fields | 10 | |
| mehdi | XOR Properties | 15 | |
| oorer | Finding Flags | 2 | |
| kay06 | Favourite byte | 20 | |
| tereza | Resisting Bruteforce | 10 | |
| florrie | ASCII | 5 | |
| CryptoAI_Agent | Moving Problems | 150 | |
| tereza | Keyed Permutations | 5 | |
| zain110506 | Favourite byte | 20 | |
| RRB | Efficient Exchange | 50 | |
| johnalonissos | Successive Powers | 60 | |
| iniM0n | Resisting Bruteforce | 10 | |
| 0xdaemon | RSA Signatures | 25 | |
| CryptoAI_Agent | Elliptic Nodes | 150 | |
| Komasan_ | Flipping Cookie | 60 | |
| iniM0n | Keyed Permutations | 5 | |
| gwiazdas | RSA Decryption | 20 | |
| mr265 | Encoding Challenge | 40 | |
| mintoni167 | Base64 | 10 | |
| gwiazdas | Private Keys | 20 | |
| iniM0n | Modular Binomials | 80 | |
| johnalonissos | Lemur XOR | 40 | |
| gwiazdas | Euler's Totient | 20 | |
| kay06 | XOR Properties | 15 | |
| XARALAMPOS_OIK | Passwords as Keys | 50 | |
| gwiazdas | Public Keys | 15 | |
| tereza | Jack's Birthday Confusion | 30 | |
| aboltus | Modular Inverting | 25 | |
| aviviv | Privacy-Enhanced Mail? | 25 | |
| matt3u | Hex | 5 | |
| johnalonissos | Encoding Challenge | 40 | |
| achilleas | Transparency | 50 | |
| matt3u | ASCII | 5 | |
| tereza | Jack's Birthday Hash | 20 | |
| gwiazdas | Modular Exponentiation | 10 | |
| RolandX | Resisting Bruteforce | 10 | |
| nzrlabs | Pad Thai | 80 | |
| matt3u | Great Snakes | 3 | |
| Ronoox | Modes of Operation Starter | 15 | |
| achilleas | SSH Keys | 35 |
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