| Date | User | Challenge | Score |
| P3ekaboo | Round Keys | 20 | |
| eniga | Modes of Operation Starter | 15 | |
| phat1911 | Point Negation | 10 | |
| yasminka | Token Appreciation | 5 | |
| lazybreak | Modular Inverting | 25 | |
| yasminka | Passwords as Keys | 50 | |
| phat1911 | Background Reading | 5 | |
| Z3U55 | Gaussian Reduction | 50 | |
| QWXXHSX123 | Jack's Birthday Hash | 20 | |
| yhx | Digestive | 60 | |
| yhx | Curves and Logs | 40 | |
| yhx | Scalar Multiplication | 35 | |
| Z3U55 | What's a Lattice? | 40 | |
| lazybreak | Modular Arithmetic 2 | 20 | |
| isogenoid | Favourite byte | 20 | |
| Adekunle | Legendre Symbol | 35 | |
| isogenoid | XOR Properties | 15 | |
| lazybreak | Modular Arithmetic 1 | 20 | |
| isogenoid | XOR Starter | 10 | |
| Adekunle | Quadratic Residues | 25 | |
| Ramizz | You either know, XOR you don't | 30 | |
| Ramizz | Favourite byte | 20 | |
| isogenoid | Bytes and Big Integers | 10 | |
| Adekunle | Modular Inverting | 25 | |
| isogenoid | Base64 | 10 | |
| Adekunle | Modular Arithmetic 2 | 20 | |
| isogenoid | Hex | 5 | |
| ksm | Network Attacks | 5 | |
| isogenoid | ASCII | 5 | |
| Lex_slw | ASCII | 5 | |
| is23lame | Resisting Bruteforce | 10 | |
| Adekunle | Modular Arithmetic 1 | 20 | |
| isogenoid | Great Snakes | 3 | |
| is23lame | Keyed Permutations | 5 | |
| ksm | Great Snakes | 3 | |
| Valean | You either know, XOR you don't | 30 | |
| Blackice | XOR Starter | 10 | |
| is23lame | Transparency | 50 | |
| Alambrito1312 | Hex | 5 | |
| andrescossio | ASCII | 5 | |
| Alambrito1312 | ASCII | 5 | |
| Juank_Cordoba | XOR Starter | 10 | |
| nicolasgm10 | ASCII | 5 | |
| Heladiito | ASCII | 5 | |
| johan2892 | You either know, XOR you don't | 30 | |
| andrescossio | Great Snakes | 3 | |
| johan2892 | Favourite byte | 20 | |
| Juank_Cordoba | Bytes and Big Integers | 10 | |
| xjuanjuanx | Base64 | 10 | |
| Danna | Hex | 5 |
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