| Date | User | Challenge | Score |
| marthaha | Euler's Totient | 20 | |
| flapjack990 | XOR Starter | 10 | |
| supercatex | Quadratic Residues | 25 | |
| kai06 | Round Keys | 20 | |
| Nejc_24 | Round Keys | 20 | |
| nmhuei | Decrypting TLS 1.2 | 30 | |
| Tbs12455 | XOR Starter | 10 | |
| blahajEnjoyer | Base64 | 10 | |
| marthaha | Public Keys | 15 | |
| Nejc_24 | Structure of AES | 15 | |
| ADDADDA | Montgomery's Ladder | 40 | |
| marthaha | Modular Exponentiation | 10 | |
| reny | Working with Fields | 10 | |
| Tbs12455 | Hex | 5 | |
| kai06 | Structure of AES | 15 | |
| Tbs12455 | ASCII | 5 | |
| yrachynska | Blinding Light | 120 | |
| Nejc_24 | Resisting Bruteforce | 10 | |
| kai06 | Resisting Bruteforce | 10 | |
| Nejc_24 | Keyed Permutations | 5 | |
| TrappedMouse | Greatest Common Divisor | 15 | |
| nmhuei | Saying Hello | 20 | |
| ramdn_99 | XOR Properties | 15 | |
| osamaashraf | Quadratic Residues | 25 | |
| nmhuei | TLS Handshake | 15 | |
| xArshhh | You either know, XOR you don't | 30 | |
| kai06 | Keyed Permutations | 5 | |
| zahra_kvr | Resisting Bruteforce | 10 | |
| zahra_kvr | Keyed Permutations | 5 | |
| Nyunseo | Deriving Symmetric Keys | 40 | |
| zahra_kvr | Modular Binomials | 80 | |
| Hackappatoio | Base64 | 10 | |
| xArshhh | Favourite byte | 20 | |
| ramdn_99 | XOR Starter | 10 | |
| ramdn_99 | Bytes and Big Integers | 10 | |
| adidiuarte | Parameter Injection | 60 | |
| OtterRose | Adrien's Signs | 80 | |
| yrachynska | Parameter Injection | 60 | |
| MrMati | MDFlag | 125 | |
| victoryst | Quadratic Residues | 25 | |
| Userka69 | You either know, XOR you don't | 30 | |
| Userka69 | Favourite byte | 20 | |
| xArshhh | XOR Properties | 15 | |
| Userka69 | XOR Properties | 15 | |
| Userka69 | XOR Starter | 10 | |
| Userka69 | Bytes and Big Integers | 10 | |
| Userka69 | Base64 | 10 | |
| Userka69 | Hex | 5 | |
| Userka69 | ASCII | 5 | |
| Userka69 | Great Snakes | 3 |
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