| Date | User | Challenge | Score |
| kokogray | Modular Inverting | 25 | |
| mahi_man | ASCII | 5 | |
| wqe___ | Passwords as Keys | 50 | |
| int80 | Additive | 70 | |
| a18 | Modular Arithmetic 2 | 20 | |
| LACiA | RSA vs RNG | 150 | |
| wqe___ | Modes of Operation Starter | 15 | |
| mahi_man | Network Attacks | 5 | |
| mahi_man | Great Snakes | 3 | |
| wqe___ | Bringing It All Together | 50 | |
| mahi_man | Finding Flags | 2 | |
| Saying | Favourite byte | 20 | |
| a18 | Modular Arithmetic 1 | 20 | |
| kaspa_chandanna | Great Snakes | 3 | |
| kaspa_chandanna | Finding Flags | 2 | |
| aanata0102 | Base64 | 10 | |
| a18 | Extended GCD | 20 | |
| bhushan | Favourite byte | 20 | |
| aanata0102 | Greatest Common Divisor | 15 | |
| wasif1 | Bytes and Big Integers | 10 | |
| Shravyab | RSA Decryption | 20 | |
| nous | Better than Linear | 85 | |
| a18 | Greatest Common Divisor | 15 | |
| ImnKan | Modular Inverting | 25 | |
| gfhd | Base64 | 10 | |
| ImnKan | Modular Arithmetic 2 | 20 | |
| ImnKan | Modular Arithmetic 1 | 20 | |
| phishnchips_ | ASCII | 5 | |
| ShiperNova | Montgomery's Ladder | 40 | |
| thisismetrying | Transparency | 50 | |
| Saying | XOR Properties | 15 | |
| KZOrP4Vl | Null or Never | 100 | |
| phishnchips_ | Great Snakes | 3 | |
| phishnchips_ | Finding Flags | 2 | |
| ShiperNova | Oracular Spectacular | 150 | |
| 25521051 | Chinese Remainder Theorem | 40 | |
| wasif1 | Base64 | 10 | |
| ShiperNova | Privacy-Enhanced Mail? | 25 | |
| Petrick | ASCII | 5 | |
| NoBirdWasHam | Better than Linear | 85 | |
| gfhd | ASCII | 5 | |
| ShiperNova | Too Honest | 50 | |
| ShiperNova | Non-Interactive | 35 | |
| Shravyab | Private Keys | 20 | |
| ShiperNova | Pairing-Based Cryptography | 50 | |
| gfhd | Great Snakes | 3 | |
| thisismetrying | SSH Keys | 35 | |
| ShiperNova | Cofactor Cofantasy | 150 | |
| thisismetrying | CERTainly not | 30 | |
| gfhd | Finding Flags | 2 |
You are now level Current level