| Date | User | Challenge | Score |
| benito255 | RSA or HMAC? Part 2 | 100 | |
| rishiKraven | XOR Properties | 15 | |
| KintaZi | Structure of AES | 15 | |
| sanya338 | Round Keys | 20 | |
| benito255 | WOTS Up 2 | 90 | |
| mbexy | Quadratic Residues | 25 | |
| benito255 | WOTS Up | 75 | |
| sanya338 | Structure of AES | 15 | |
| benito255 | Merkle Trees | 25 | |
| xseris | Transparency | 50 | |
| KintaZi | Resisting Bruteforce | 10 | |
| dustincaesar | Lemur XOR | 40 | |
| landerson_ | Confusion through Substitution | 25 | |
| Sxpck1 | Base64 | 10 | |
| caipeicheng | Greatest Common Divisor | 15 | |
| landerson_ | Round Keys | 20 | |
| sanya338 | Resisting Bruteforce | 10 | |
| sixsquareAI | Checkpoint | 150 | |
| KintaZi | Keyed Permutations | 5 | |
| sanya338 | Keyed Permutations | 5 | |
| xseris | Cofactor Cofantasy | 150 | |
| jac0 | Scalar Multiplication | 35 | |
| YouDecide | Script Kiddie | 70 | |
| landerson_ | Structure of AES | 15 | |
| frostzz | Bean Counter | 60 | |
| Sxpck1 | Hex | 5 | |
| wangfu | Diffusion through Permutation | 30 | |
| JuliannSS | Symmetry | 50 | |
| ELmomo | Great Snakes | 3 | |
| frostzz | Symmetry | 50 | |
| Sxpck1 | ASCII | 5 | |
| JuliannSS | Flipping Cookie | 60 | |
| KintaZi | Modular Binomials | 80 | |
| JuliannSS | ECB CBC WTF | 55 | |
| frostzz | Flipping Cookie | 60 | |
| ISKANDARLAN | Signing Server | 60 | |
| nous | OR Proof (CryptoHack) | 0 | |
| frostzz | ECB CBC WTF | 55 | |
| ELmomo | Finding Flags | 2 | |
| marconata | Finding Flags | 2 | |
| frostzz | ECB Oracle | 60 | |
| lololololokol | Square Eyes | 35 | |
| hodinhtri30 | Quadratic Residues | 25 | |
| Ledebutant | Greatest Common Divisor | 15 | |
| xseris | Prime and Prejudice | 200 | |
| JuliannSS | ECB Oracle | 60 | |
| hodinhtri30 | Modular Inverting | 25 | |
| Sxpck1 | Great Snakes | 3 | |
| jac0 | Inferius Prime | 30 | |
| DhamoZx | Passwords as Keys | 50 |
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