| Date | User | Challenge | Score |
| 0xsmk | Hex | 5 | |
| s1340003 | Modular Arithmetic 1 | 20 | |
| 0xsmk | ASCII | 5 | |
| 0xsmk | Great Snakes | 3 | |
| 0xsmk | Finding Flags | 2 | |
| LingLing_at_CH | Private Keys | 20 | |
| monycc | Finding Flags | 2 | |
| Exodus5578 | Hex | 5 | |
| jimmy20180130 | RSA Signatures | 25 | |
| LingLing_at_CH | Euler's Totient | 20 | |
| LingLing_at_CH | Public Keys | 15 | |
| andreahodl | Modular Arithmetic 2 | 20 | |
| thisnello | Adrien's Signs | 80 | |
| LingLing_at_CH | Modular Exponentiation | 10 | |
| Loidx | Round Keys | 20 | |
| andreahodl | Modular Arithmetic 1 | 20 | |
| andreahodl | Extended GCD | 20 | |
| ArdorBlossom | Point Negation | 10 | |
| jimmy20180130 | RSA Decryption | 20 | |
| Aiman005 | Base64 | 10 | |
| jimmy20180130 | Private Keys | 20 | |
| andreahodl | Greatest Common Divisor | 15 | |
| LEILAH | XOR Properties | 15 | |
| Doemae | Legendre Symbol | 35 | |
| jimmy20180130 | Euler's Totient | 20 | |
| diwakar | XOR Starter | 10 | |
| ltwind_v2 | Noise Cheap | 90 | |
| diwakar | Bytes and Big Integers | 10 | |
| BigChonk | Factoring | 15 | |
| jimmy20180130 | Public Keys | 15 | |
| Aiman005 | Hex | 5 | |
| lauretti | ECB CBC WTF | 55 | |
| diwakar | Base64 | 10 | |
| BigChonk | RSA Signatures | 25 | |
| jimmy20180130 | Modular Exponentiation | 10 | |
| diwakar | Hex | 5 | |
| Doemae | Quadratic Residues | 25 | |
| P3ekaboo | Modes of Operation Starter | 15 | |
| diwakar | ASCII | 5 | |
| Aiman005 | ASCII | 5 | |
| diwakar | Great Snakes | 3 | |
| BigChonk | RSA Decryption | 20 | |
| diwakar | Finding Flags | 2 | |
| Doemae | Modular Inverting | 25 | |
| BigChonk | Private Keys | 20 | |
| BigChonk | Euler's Totient | 20 | |
| Doemae | Modular Arithmetic 2 | 20 | |
| BigChonk | Public Keys | 15 | |
| Aiman005 | Great Snakes | 3 | |
| BigChonk | Modular Exponentiation | 10 |
You are now level Current level