NSA ICPC Challenge 2021
Problems
| Name | Solved / Tries | Average tries | Average tries to solve | |
|---|---|---|---|---|
| A | Crazy Base64 | 20/42 (48%) | 1.75 | 1.80 |
| B | Parse The Data | 23/32 (72%) | 1.39 | 1.39 |
| C | Not-So-Straightforward Stream Cipher | 15/16 (94%) | 1.07 | 1.07 |
| D | Key Exhaust | 5/11 (45%) | 2.20 | 2.20 |
| E | Key "Hash" | 15/21 (71%) | 1.40 | 1.40 |
| F | A Block Cipher | 12/15 (80%) | 1.25 | 1.25 |
| G | A La Mode | 7/14 (50%) | 2.00 | 2.00 |
| H | File Recovery | 1/1 (100%) | 1.00 | 1.00 |