| Date | User | Challenge | Score |
| sangmyeongsheon | Bean Counter | 60 | |
| Denis000 | ASCII | 5 | |
| sangmyeongsheon | Symmetry | 50 | |
| misfitx | XOR Starter | 10 | |
| sangmyeongsheon | Flipping Cookie | 60 | |
| crypto_knight | Favourite byte | 20 | |
| sangmyeongsheon | ECB CBC WTF | 55 | |
| bqa100507 | Monoprime | 30 | |
| reticent_ain | Chinese Remainder Theorem | 40 | |
| sangmyeongsheon | ECB Oracle | 60 | |
| znur | Efficient Exchange | 50 | |
| Farkladin | ECB CBC WTF | 55 | |
| Haxan | Greatest Common Divisor | 15 | |
| mk4akash | You either know, XOR you don't | 30 | |
| Theodo | Too Many Errors | 100 | |
| bqa100507 | Inferius Prime | 30 | |
| sangmyeongsheon | Passwords as Keys | 50 | |
| Danial123 | Adrien's Signs | 80 | |
| crypto_knight | XOR Properties | 15 | |
| usamaAbid | Chinese Remainder Theorem | 40 | |
| sangmyeongsheon | Modes of Operation Starter | 15 | |
| Dilnazddd | XOR Properties | 15 | |
| reticent_ain | Modular Square Root | 35 | |
| sangmyeongsheon | Bringing It All Together | 50 | |
| raheel | Factoring | 15 | |
| usamaAbid | Modular Square Root | 35 | |
| Farkladin | ECB Oracle | 60 | |
| sangmyeongsheon | Diffusion through Permutation | 30 | |
| raheel | Public Keys | 15 | |
| AceNk | Point Negation | 10 | |
| raheel | Modular Exponentiation | 10 | |
| Bolt | Modular Square Root | 35 | |
| sangmyeongsheon | Confusion through Substitution | 25 | |
| ali393TIGER | Chinese Remainder Theorem | 40 | |
| Zlatik123 | Chinese Remainder Theorem | 40 | |
| enlik | Chinese Remainder Theorem | 40 | |
| Danial123 | Chinese Remainder Theorem | 40 | |
| ali393TIGER | Modular Square Root | 35 | |
| Zlatik123 | Modular Square Root | 35 | |
| enlik | Modular Square Root | 35 | |
| znur | Curves and Logs | 40 | |
| enlik | Legendre Symbol | 35 | |
| Danial123 | Modular Square Root | 35 | |
| raheel | Structure of AES | 15 | |
| ali393TIGER | Legendre Symbol | 35 | |
| Zlatik123 | Legendre Symbol | 35 | |
| raheel | Resisting Bruteforce | 10 | |
| EndlessTurtle | Modular Square Root | 35 | |
| AKJ_JADOON | Modular Square Root | 35 | |
| usamaAbid | Legendre Symbol | 35 |
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