| Date | User | Challenge | Score |
| Agnumen | Export-grade | 100 | |
| Mellivora | Salty | 20 | |
| esticats | Greatest Common Divisor | 15 | |
| niSa333 | XOR Starter | 10 | |
| mochaowo | RSA or HMAC? Part 2 | 100 | |
| bschweitz | Base64 | 10 | |
| bschweitz | Hex | 5 | |
| M1r4ge | Great Snakes | 3 | |
| bschweitz | ASCII | 5 | |
| bschweitz | Great Snakes | 3 | |
| niSa333 | Bytes and Big Integers | 10 | |
| bschweitz | Finding Flags | 2 | |
| M1r4ge | Finding Flags | 2 | |
| lucy54 | Everything is Big | 70 | |
| CicAlex | ASCII | 5 | |
| cryptopython3 | Bytes and Big Integers | 10 | |
| Rugby | Great Snakes | 3 | |
| Rugby | Finding Flags | 2 | |
| Agnumen | Parameter Injection | 60 | |
| cryptopython3 | Base64 | 10 | |
| forward15 | Modular Arithmetic 1 | 20 | |
| CicAlex | Great Snakes | 3 | |
| Hattmakare | ProSign 3 | 100 | |
| pppp | Breaking SIDH | 250 | |
| Gabsadio | CTRIME | 70 | |
| cryptopython3 | Hex | 5 | |
| schmulbluck | Legendre Symbol | 35 | |
| okzyas | Bean Counter | 60 | |
| niSa333 | Base64 | 10 | |
| cryptopython3 | ASCII | 5 | |
| forward15 | Extended GCD | 20 | |
| okzyas | Symmetry | 50 | |
| okzyas | ECB Oracle | 60 | |
| Agnumen | Deriving Symmetric Keys | 40 | |
| CicAlex | Finding Flags | 2 | |
| lucy54 | Transparency | 50 | |
| okzyas | Passwords as Keys | 50 | |
| cryptopython3 | Great Snakes | 3 | |
| SF57 | Structure of AES | 15 | |
| okzyas | Modes of Operation Starter | 15 | |
| okzyas | Bringing It All Together | 50 | |
| okzyas | Diffusion through Permutation | 30 | |
| niSa333 | Hex | 5 | |
| okzyas | Confusion through Substitution | 25 | |
| okzyas | Round Keys | 20 | |
| Merci_b | Ron was Wrong, Whit is Right | 90 | |
| okzyas | Structure of AES | 15 | |
| cryptopython3 | Finding Flags | 2 | |
| okzyas | Resisting Bruteforce | 10 | |
| okzyas | Keyed Permutations | 5 |
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