| Date | User | Challenge | Score |
| bobsobek | ASCII | 5 | |
| bobsobek | Great Snakes | 3 | |
| bobsobek | Finding Flags | 2 | |
| dishan | You either know, XOR you don't | 30 | |
| Op4l_ | Quadratic Residues | 25 | |
| bookfan | Token Appreciation | 5 | |
| Manos91 | XOR Starter | 10 | |
| xxxsimonxxx | Deriving Symmetric Keys | 40 | |
| xxxsimonxxx | Computing Shared Secrets | 30 | |
| xxxsimonxxx | Computing Public Values | 25 | |
| xxxsimonxxx | Generators of Groups | 20 | |
| jimsteph | ECB Oracle | 60 | |
| xxxsimonxxx | Working with Fields | 10 | |
| xxxsimonxxx | Modulus Inutilis | 50 | |
| xxxsimonxxx | Salty | 20 | |
| mintoni1679 | Great Snakes | 3 | |
| xxxsimonxxx | Manyprime | 40 | |
| vnrluh | Favourite byte | 20 | |
| dishan | Favourite byte | 20 | |
| dishan | XOR Properties | 15 | |
| dishan | XOR Starter | 10 | |
| xxxsimonxxx | Monoprime | 30 | |
| twang | Quadratic Residues | 25 | |
| xxxsimonxxx | Factoring | 15 | |
| xxxsimonxxx | RSA Signatures | 25 | |
| vijaykondapalli | You either know, XOR you don't | 30 | |
| xxxsimonxxx | RSA Decryption | 20 | |
| xxxsimonxxx | Private Keys | 20 | |
| xxxsimonxxx | Euler's Totient | 20 | |
| xxxsimonxxx | Public Keys | 15 | |
| xxxsimonxxx | Modular Exponentiation | 10 | |
| s_aoki | XOR Starter | 10 | |
| talidam | You either know, XOR you don't | 30 | |
| s_aoki | Bytes and Big Integers | 10 | |
| Soisina | Keyed Permutations | 5 | |
| hackerd | XOR Starter | 10 | |
| xxxsimonxxx | Bean Counter | 60 | |
| joko | Montgomery Curves | 30 | |
| FuFon | Base64 | 10 | |
| xxxsimonxxx | Symmetry | 50 | |
| talidam | Favourite byte | 20 | |
| vijaykondapalli | Favourite byte | 20 | |
| FuFon | Transparency | 50 | |
| xxxsimonxxx | Flipping Cookie | 60 | |
| joko | Image Point Arithmetic | 30 | |
| Op4l_ | Modular Inverting | 25 | |
| FuFon | Privacy-Enhanced Mail? | 25 | |
| xxxsimonxxx | ECB CBC WTF | 55 | |
| FuFon | CERTainly not | 30 | |
| FuFon | SSH Keys | 35 |
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