| Date | User | Challenge | Score |
| wkm015 | Bytes and Big Integers | 10 | |
| anntnt | Bytes and Big Integers | 10 | |
| rito_sand | Chinese Remainder Theorem | 40 | |
| khawla1 | RSA or HMAC? Part 2 | 100 | |
| killk1t | Modular Square Root | 35 | |
| Sqveid | Extended GCD | 20 | |
| Lucas1123 | Modular Arithmetic 2 | 20 | |
| supp3rm4n | Bean Counter | 60 | |
| minhtuanpro | XOR Starter | 10 | |
| Kagetasu | Diffusion through Permutation | 30 | |
| 4lch3mis7 | XOR Properties | 15 | |
| BADWARE | Triple DES | 60 | |
| anntnt | Base64 | 10 | |
| killk1t | Legendre Symbol | 35 | |
| Lucas1123 | Modular Arithmetic 1 | 20 | |
| frudewor | Scalar Multiplication | 35 | |
| Red_Hive_008 | Greatest Common Divisor | 15 | |
| lanxve | Favourite byte | 20 | |
| zkazute99 | Great Snakes | 3 | |
| duckdev_soumalya | Finding Flags | 2 | |
| Skypace | ECB Oracle | 60 | |
| zkazute99 | Finding Flags | 2 | |
| username_registe | Base64 | 10 | |
| Foul | Chinese Remainder Theorem | 40 | |
| mimi29_dak | ASCII | 5 | |
| username_registe | Hex | 5 | |
| taer | Hex | 5 | |
| Zayec | Bytes and Big Integers | 10 | |
| ali2241 | Quadratic Residues | 25 | |
| goatant | Quadratic Residues | 25 | |
| killk1t | Quadratic Residues | 25 | |
| username_registe | ASCII | 5 | |
| Kagetasu | Confusion through Substitution | 25 | |
| Foul | Modular Square Root | 35 | |
| goatant | Modular Inverting | 25 | |
| mimi29_dak | Great Snakes | 3 | |
| username_registe | Great Snakes | 3 | |
| 4lch3mis7 | XOR Starter | 10 | |
| gl1tt3rpuff0 | Signing Server | 60 | |
| username_registe | Finding Flags | 2 | |
| Foul | Legendre Symbol | 35 | |
| anntnt | Hex | 5 | |
| gl1tt3rpuff0 | Endless Emails | 150 | |
| ebubles | XOR Starter | 10 | |
| goatant | Modular Arithmetic 2 | 20 | |
| Quoc130370 | Crossed Wires | 100 | |
| killk1t | Modular Inverting | 25 | |
| gl1tt3rpuff0 | Crossed Wires | 100 | |
| wkm015 | Base64 | 10 | |
| gl1tt3rpuff0 | Everything is Big | 70 |
You are now level Current level