| Date | User | Challenge | Score |
| arraynfeeza | Bytes and Big Integers | 10 | |
| Yaggkelv1212 | Base64 | 10 | |
| Yaggkelv1212 | Hex | 5 | |
| Yaggkelv1212 | ASCII | 5 | |
| johann507 | ASCII | 5 | |
| Yaggkelv1212 | Great Snakes | 3 | |
| laptrack42 | You either know, XOR you don't | 30 | |
| johann507 | Great Snakes | 3 | |
| Yaggkelv1212 | Finding Flags | 2 | |
| johann507 | Finding Flags | 2 | |
| r0b3nh00d | Bytes and Big Integers | 10 | |
| zrm9901 | Greatest Common Divisor | 15 | |
| laptrack42 | Favourite byte | 20 | |
| arraynfeeza | Base64 | 10 | |
| jagotu | Oh SNAP | 120 | |
| kretestusername | Keyed Permutations | 5 | |
| nhuhung37 | LWE Intro | 10 | |
| arraynfeeza | Hex | 5 | |
| yeetoh | Base64 | 10 | |
| Freitagen | You either know, XOR you don't | 30 | |
| arraynfeeza | ASCII | 5 | |
| laptrack42 | XOR Properties | 15 | |
| invers | Manyprime | 40 | |
| invers | Monoprime | 30 | |
| invers | Factoring | 15 | |
| invers | RSA Signatures | 25 | |
| invers | RSA Decryption | 20 | |
| invers | Private Keys | 20 | |
| invers | Euler's Totient | 20 | |
| invers | Public Keys | 15 | |
| invers | Modular Exponentiation | 10 | |
| r0b3nh00d | Base64 | 10 | |
| invers | Bean Counter | 60 | |
| invers | Symmetry | 50 | |
| invers | Flipping Cookie | 60 | |
| Pearce | XOR Starter | 10 | |
| invers | ECB CBC WTF | 55 | |
| invers | ECB Oracle | 60 | |
| mimi09 | Finding Flags | 2 | |
| invers | Passwords as Keys | 50 | |
| invers | Modes of Operation Starter | 15 | |
| invers | Bringing It All Together | 50 | |
| invers | Diffusion through Permutation | 30 | |
| invers | Confusion through Substitution | 25 | |
| invers | Round Keys | 20 | |
| arraynfeeza | Network Attacks | 5 | |
| invers | Structure of AES | 15 | |
| invers | Resisting Bruteforce | 10 | |
| invers | Keyed Permutations | 5 | |
| invers | Modular Binomials | 80 |
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