| Date | User | Challenge | Score |
| tiankunpeng | RSA Decryption | 20 | |
| kingjdg | XOR Starter | 10 | |
| Ikamar | ECB CBC WTF | 55 | |
| tiankunpeng | Computing Public Values | 25 | |
| tristanpetrovich | Greatest Common Divisor | 15 | |
| ippo717273 | Favourite byte | 20 | |
| miawheker | You either know, XOR you don't | 30 | |
| HunterJA | Finding Flags | 2 | |
| tiankunpeng | Round Keys | 20 | |
| ahmed_1ACR | Greatest Common Divisor | 15 | |
| tiankunpeng | ZKP Introduction | 5 | |
| miawheker | Favourite byte | 20 | |
| Ikamar | ECB Oracle | 60 | |
| Ikamar | Passwords as Keys | 50 | |
| ippo717273 | XOR Properties | 15 | |
| renzo75 | Bruce Schneier's Password | 100 | |
| Ikamar | Modes of Operation Starter | 15 | |
| tiankunpeng | Gaussian Reduction | 50 | |
| Ikamar | Bringing It All Together | 50 | |
| miawheker | XOR Properties | 15 | |
| tiankunpeng | What's a Lattice? | 40 | |
| Ikamar | Diffusion through Permutation | 30 | |
| lmdr | You either know, XOR you don't | 30 | |
| tiankunpeng | Gram Schmidt | 30 | |
| Ikamar | Confusion through Substitution | 25 | |
| renzo75 | Gotta Go Fast | 40 | |
| miawheker | XOR Starter | 10 | |
| Ikamar | Round Keys | 20 | |
| tiankunpeng | Size and Basis | 15 | |
| miawheker | Bytes and Big Integers | 10 | |
| Ikamar | Structure of AES | 15 | |
| tiankunpeng | Vectors | 10 | |
| Ikamar | Resisting Bruteforce | 10 | |
| Ikamar | Keyed Permutations | 5 | |
| tiankunpeng | JWT Sessions | 10 | |
| miawheker | Base64 | 10 | |
| tiankunpeng | Jack's Birthday Confusion | 30 | |
| miawheker | Hex | 5 | |
| miawheker | ASCII | 5 | |
| miawheker | Great Snakes | 3 | |
| tiankunpeng | Jack's Birthday Hash | 20 | |
| miawheker | Finding Flags | 2 | |
| depiedrascript | Finding Flags | 2 | |
| kingjdg | Bytes and Big Integers | 10 | |
| tiankunpeng | Curves and Logs | 40 | |
| ippo717273 | XOR Starter | 10 | |
| tiankunpeng | Scalar Multiplication | 35 | |
| tiankunpeng | Point Addition | 30 | |
| lmdr | Favourite byte | 20 | |
| tiankunpeng | Background Reading | 5 |
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