| Date | User | Challenge | Score |
| GUMAYUSI | Resisting Bruteforce | 10 | |
| Zakyboss | Base64 | 10 | |
| A_M_E | Round Keys | 20 | |
| ENOENT | Long Story Short | 60 | |
| JunaidAboo | Bringing It All Together | 50 | |
| R3 | Factoring | 15 | |
| xemafe6824 | RSA Decryption | 20 | |
| JunaidAboo | Diffusion through Permutation | 30 | |
| xemafe6824 | Private Keys | 20 | |
| KMuJu | Null or Never | 100 | |
| Damsssss | Transparency | 50 | |
| Dendy | XOR Properties | 15 | |
| xemafe6824 | Euler's Totient | 20 | |
| xemafe6824 | Public Keys | 15 | |
| yingxiaowo | Bytes and Big Integers | 10 | |
| lagerat | Chinese Remainder Theorem | 40 | |
| xemafe6824 | Modular Exponentiation | 10 | |
| mej | Passwords as Keys | 50 | |
| JunaidAboo | Confusion through Substitution | 25 | |
| JunaidAboo | Round Keys | 20 | |
| JunaidAboo | Structure of AES | 15 | |
| Zakyboss | Hex | 5 | |
| Sahilkhanna50 | Gotta Go Fast | 40 | |
| A_M_E | Structure of AES | 15 | |
| JunaidAboo | Resisting Bruteforce | 10 | |
| JunaidAboo | Keyed Permutations | 5 | |
| SirRockhead | Modular Arithmetic 1 | 20 | |
| Sahilkhanna50 | Collider | 50 | |
| arindam_046 | Great Snakes | 3 | |
| __mat13__ | Base64 | 10 | |
| Zakyboss | ASCII | 5 | |
| aiberus | Base64 | 10 | |
| varixius | Round Keys | 20 | |
| Sahilkhanna50 | Jack's Birthday Confusion | 30 | |
| Sahilkhanna50 | Jack's Birthday Hash | 20 | |
| Damsssss | SSH Keys | 35 | |
| agr0chal | Modular Arithmetic 1 | 20 | |
| arindam_046 | Finding Flags | 2 | |
| Zakyboss | Great Snakes | 3 | |
| ENOENT | Seventy-Two | 50 | |
| __mat13__ | Hex | 5 | |
| aiberus | Hex | 5 | |
| kakobtg | Paper Plane | 120 | |
| AbstractArt | Finding Flags | 2 | |
| Sahilkhanna50 | Non-Interactive | 35 | |
| Sahilkhanna50 | ZKP Introduction | 5 | |
| Sahilkhanna50 | Triple DES | 60 | |
| Sahilkhanna50 | Lazy CBC | 60 | |
| Sahilkhanna50 | Flipping Cookie | 60 | |
| Sahilkhanna50 | ECB Oracle | 60 |
You are now level Current level