| Date | User | Challenge | Score |
| YCHuang | Monoprime | 30 | |
| h4ppE | Modular Inverting | 25 | |
| h4ppE | Modular Arithmetic 2 | 20 | |
| YWzhong | Efficient Exchange | 50 | |
| anagharamadas | Base64 | 10 | |
| dackelberg | XOR Starter | 10 | |
| h4ppE | Modular Arithmetic 1 | 20 | |
| pc417 | Gotta Go Fast | 40 | |
| registers_ninja | XOR Starter | 10 | |
| anagharamadas | Hex | 5 | |
| h4ppE | Extended GCD | 20 | |
| h4ppE | Greatest Common Divisor | 15 | |
| tink29phu23 | Legendre Symbol | 35 | |
| dlhxfy | Parameter Injection | 60 | |
| anagharamadas | ASCII | 5 | |
| EcheExpert | Bringing It All Together | 50 | |
| LatteVanille | Base64 | 10 | |
| crowcell | Chinese Remainder Theorem | 40 | |
| YWzhong | Curves and Logs | 40 | |
| LatteVanille | Hex | 5 | |
| registers_ninja | Bytes and Big Integers | 10 | |
| elgasing21 | Round Keys | 20 | |
| YCHuang | Inferius Prime | 30 | |
| gittyasois | Curves and Logs | 40 | |
| EcheExpert | Diffusion through Permutation | 30 | |
| Dessert | Transparency | 50 | |
| LatteVanille | ASCII | 5 | |
| Blue_ | Moving Problems | 150 | |
| YWzhong | Scalar Multiplication | 35 | |
| jdejuan | ASCII | 5 | |
| LatteVanille | Great Snakes | 3 | |
| cigamaLTT | Extended GCD | 20 | |
| luwofi | Efficient Exchange | 50 | |
| gittyasois | Scalar Multiplication | 35 | |
| gittyasois | Point Addition | 30 | |
| oongyi | Modular Square Root | 35 | |
| jdejuan | Great Snakes | 3 | |
| gittyasois | Point Negation | 10 | |
| gittyasois | Background Reading | 5 | |
| elgasing21 | Structure of AES | 15 | |
| luwofi | Curves and Logs | 40 | |
| crowcell | Modular Square Root | 35 | |
| mohanch | ASCII | 5 | |
| registers_ninja | Base64 | 10 | |
| sai0742 | Base64 | 10 | |
| thang2006 | Greatest Common Divisor | 15 | |
| Superior | SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated (HTB Cyber Apocalypse) | 0 | |
| Dessert | SSH Keys | 35 | |
| thang2006 | Lemur XOR | 40 | |
| mohanch | Great Snakes | 3 |
You are now level Current level