hokak
12th place
3459 points
Solves
| Challenge | Category | Value | Time |
|---|---|---|---|
| LSB oracle | RSA - Chosen ciphertext | 464 | |
| wiener attack | RSA - Private exponent | 223 | |
| useful nonce | Symmetric cipher - Stream cipher | 500 | |
| know high bits | RSA - Modulu | 499 | |
| common modulus | RSA - Modulu | 244 | |
| factor attack 3 | RSA - Modulu | 464 | |
| factor attack 2 | RSA - Modulu | 265 | |
| factor attack | RSA - Modulu | 200 | |
| secret game | Symmetric cipher - Stream cipher | 500 | |
| RC4 | Symmetric cipher - Stream cipher | 100 |