| Date | User | Challenge | Score |
| thkim | Private Keys | 20 | |
| thkim | RSA Decryption | 20 | |
| EthanIn | Modular Arithmetic 1 | 20 | |
| odysseus444 | Modular Inverting | 25 | |
| Superior | Blind (ECSC 2023 (Norway)) | 0 | |
| jjangda | RSA Decryption | 20 | |
| Maypark | XOR Properties | 15 | |
| ashwan | Public Keys | 15 | |
| sbfmt | RSA Decryption | 20 | |
| Roldat | Public Keys | 15 | |
| prussianblue | You either know, XOR you don't | 30 | |
| jjangda | Private Keys | 20 | |
| chocopoco | RSA Decryption | 20 | |
| skiller3478 | Network Attacks | 5 | |
| thkim | Euler's Totient | 20 | |
| Jaewon852 | XOR Starter | 10 | |
| furansupan | Private Keys | 20 | |
| Roldat | Euler's Totient | 20 | |
| skiller3478 | Great Snakes | 3 | |
| ashwan | Modular Exponentiation | 10 | |
| furansupan | Euler's Totient | 20 | |
| skiller3478 | Finding Flags | 2 | |
| rkdalsjun | Euler's Totient | 20 | |
| dasdfasdfasdf | Euler's Totient | 20 | |
| erwne | Modular Exponentiation | 10 | |
| nkia | Modular Exponentiation | 10 | |
| furansupan | Public Keys | 15 | |
| dasdfasdfasdf | Public Keys | 15 | |
| dasdfasdfasdf | Modular Exponentiation | 10 | |
| Roldat | Modular Exponentiation | 10 | |
| furansupan | Modular Exponentiation | 10 | |
| Kipngeno_Brian | Bean Counter | 60 | |
| burp | Great Snakes | 3 | |
| Kipngeno_Brian | Symmetry | 50 | |
| sankk | Modular Binomials | 80 | |
| Kipngeno_Brian | Flipping Cookie | 60 | |
| itg6j | Background Reading | 5 | |
| sankk | Adrien's Signs | 80 | |
| Kipngeno_Brian | ECB CBC WTF | 55 | |
| Hailemariam | Base64 | 10 | |
| Kipngeno_Brian | ECB Oracle | 60 | |
| Jaewon852 | Bytes and Big Integers | 10 | |
| Kipngeno_Brian | Passwords as Keys | 50 | |
| burp | Finding Flags | 2 | |
| Kipngeno_Brian | Modes of Operation Starter | 15 | |
| sankk | Chinese Remainder Theorem | 40 | |
| N_Josiah | Quadratic Residues | 25 | |
| Kipngeno_Brian | Bringing It All Together | 50 | |
| sankk | Modular Square Root | 35 | |
| traktor | Point Negation | 10 |
You are now level Current level