| Date | User | Challenge | Score |
| cellrealll | You either know, XOR you don't | 30 | |
| AlekAgent | XOR Starter | 10 | |
| porty40 | Flipping Cookie | 60 | |
| jinseo | Chinese Remainder Theorem | 40 | |
| AlekAgent | Bytes and Big Integers | 10 | |
| ss_di | Finding Flags | 2 | |
| AlekAgent | Base64 | 10 | |
| cellrealll | Favourite byte | 20 | |
| AlekAgent | Hex | 5 | |
| 048224 | RSA Signatures | 25 | |
| cellrealll | XOR Properties | 15 | |
| AlekAgent | ASCII | 5 | |
| 048224 | RSA Decryption | 20 | |
| AlekAgent | Great Snakes | 3 | |
| cavazinf | Passwords as Keys | 50 | |
| selsoares11 | XOR Starter | 10 | |
| AlekAgent | Finding Flags | 2 | |
| 048224 | Private Keys | 20 | |
| porty40 | ECB CBC WTF | 55 | |
| 048224 | Euler's Totient | 20 | |
| jlejsdifjsl | Favourite byte | 20 | |
| 048224 | Public Keys | 15 | |
| 048224 | Modular Exponentiation | 10 | |
| selsoares11 | Bytes and Big Integers | 10 | |
| knkl384038 | Structure of AES | 15 | |
| jlejsdifjsl | XOR Properties | 15 | |
| favfrog07 | Base64 | 10 | |
| varxuwuuu | Favourite byte | 20 | |
| NitroN | Decrypting TLS 1.3 | 35 | |
| Alergush | Favourite byte | 20 | |
| europop02 | Base64 | 10 | |
| europop02 | Hex | 5 | |
| NitroN | Decrypting TLS 1.2 | 30 | |
| dkoazwlearning | Gram Schmidt | 30 | |
| europop02 | ASCII | 5 | |
| jlejsdifjsl | XOR Starter | 10 | |
| user0003 | Great Snakes | 3 | |
| selsoares11 | Base64 | 10 | |
| nicolazfrei | RSA Signatures | 25 | |
| d0577 | Encoding Challenge | 40 | |
| ADDADDA | Efficient Exchange | 50 | |
| selsoares11 | Hex | 5 | |
| jlejsdifjsl | Bytes and Big Integers | 10 | |
| varxuwuuu | XOR Properties | 15 | |
| checul | Bringing It All Together | 50 | |
| porty40 | ECB Oracle | 60 | |
| gasmer | Script Kiddie | 70 | |
| europop02 | Greatest Common Divisor | 15 | |
| selsoares11 | ASCII | 5 | |
| selsoares11 | Great Snakes | 3 |
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