| Date | User | Challenge | Score |
| Lukoobus | Finding Flags | 2 | |
| Jragon | You either know, XOR you don't | 30 | |
| hultsa | XOR Starter | 10 | |
| hultsa | Bytes and Big Integers | 10 | |
| hultsa | RSA Signatures | 25 | |
| hultsa | RSA Decryption | 20 | |
| hultsa | Private Keys | 20 | |
| hultsa | Euler's Totient | 20 | |
| hultsa | Public Keys | 15 | |
| hultsa | Modular Exponentiation | 10 | |
| DetectiveBunny11 | Modular Arithmetic 1 | 20 | |
| Grey12321 | XOR Starter | 10 | |
| DetectiveBunny11 | Extended GCD | 20 | |
| factual117 | ECB Oracle | 60 | |
| Raymond | Bean Counter | 60 | |
| Raymond | Symmetry | 50 | |
| Raymond | Flipping Cookie | 60 | |
| cosminm53 | XOR Starter | 10 | |
| curtmack | Base64 | 10 | |
| terrencyy | Modular Binomials | 80 | |
| curtmack | Hex | 5 | |
| Raymond | ECB CBC WTF | 55 | |
| Bigfoot1924 | XOR Properties | 15 | |
| fucla | Quadratic Residues | 25 | |
| Raymond | ECB Oracle | 60 | |
| ahm0dg | Hex | 5 | |
| mjm | Resisting Bruteforce | 10 | |
| cosminm53 | Bytes and Big Integers | 10 | |
| terrencyy | Chinese Remainder Theorem | 40 | |
| terrencyy | Modular Square Root | 35 | |
| curtmack | ASCII | 5 | |
| terrencyy | Legendre Symbol | 35 | |
| curtmack | Great Snakes | 3 | |
| curtmack | Finding Flags | 2 | |
| terrencyy | Quadratic Residues | 25 | |
| terrencyy | Modular Inverting | 25 | |
| terrencyy | Modular Arithmetic 2 | 20 | |
| terrencyy | Modular Arithmetic 1 | 20 | |
| mjm | Keyed Permutations | 5 | |
| ahm0dg | ASCII | 5 | |
| terrencyy | Extended GCD | 20 | |
| terrencyy | Greatest Common Divisor | 15 | |
| fucla | Transparency | 50 | |
| mjm | Network Attacks | 5 | |
| kyalo | Quadratic Residues | 25 | |
| ahm0dg | Great Snakes | 3 | |
| KatanuKwinga | Bean Counter | 60 | |
| KatanuKwinga | Symmetry | 50 | |
| fucla | SSH Keys | 35 | |
| KatanuKwinga | Flipping Cookie | 60 |
You are now level Current level