| Date | User | Challenge | Score |
| RezaWijayanti | Bringing It All Together | 50 | |
| radare | Hide and seek (ECSC 2023 (Norway)) | 0 | |
| Emma2266 | Modular Arithmetic 1 | 20 | |
| peter941221 | Favourite byte | 20 | |
| TikiPete | Bytes and Big Integers | 10 | |
| TikiPete | Base64 | 10 | |
| RezaWijayanti | Diffusion through Permutation | 30 | |
| joko | Hash Stuffing | 50 | |
| RezaWijayanti | Confusion through Substitution | 25 | |
| crypto101 | Extended GCD | 20 | |
| SoonOOv | Passwords as Keys | 50 | |
| RezaWijayanti | Round Keys | 20 | |
| TikiPete | Hex | 5 | |
| TikiPete | ASCII | 5 | |
| RezaWijayanti | Structure of AES | 15 | |
| phat1911 | Legendre Symbol | 35 | |
| RezaWijayanti | Resisting Bruteforce | 10 | |
| TikiPete | Great Snakes | 3 | |
| RezaWijayanti | Keyed Permutations | 5 | |
| quangntenemy | Jeff's LFSR | 150 | |
| TikiPete | Finding Flags | 2 | |
| chmakorkrich | ASCII | 5 | |
| gkaanls | Elliptic Nodes | 150 | |
| chmakorkrich | Great Snakes | 3 | |
| chmakorkrich | Finding Flags | 2 | |
| Uyanclo | Modular Binomials | 80 | |
| kurasatakada | Great Snakes | 3 | |
| kurasatakada | Finding Flags | 2 | |
| yr81 | Vote for Pedro | 150 | |
| 756TrollerLujanC | Modulus Inutilis | 50 | |
| 756TrollerLujanC | Salty | 20 | |
| 756TrollerLujanC | Manyprime | 40 | |
| 756TrollerLujanC | Monoprime | 30 | |
| lauragarcia66 | Smooth Criminal | 60 | |
| UMAyuma | Passwords as Keys | 50 | |
| 756TrollerLujanC | Factoring | 15 | |
| sp1n0z4 | Flipping Cookie | 60 | |
| rapt00r | Lazy CBC | 60 | |
| DarkinCypher | Moving Problems | 150 | |
| DarkinCypher | ProSign 3 | 100 | |
| DarkinCypher | Curveball | 100 | |
| DarkinCypher | Smooth Criminal | 60 | |
| DarkinCypher | Montgomery's Ladder | 40 | |
| DarkinCypher | Efficient Exchange | 50 | |
| DarkinCypher | Curves and Logs | 40 | |
| DarkinCypher | Export-grade | 100 | |
| DarkinCypher | Parameter Injection | 60 | |
| DarkinCypher | Deriving Symmetric Keys | 40 | |
| DarkinCypher | Computing Shared Secrets | 30 | |
| DarkinCypher | Computing Public Values | 25 |
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