# Crate kctf_pow[−][src]

Expand description

A library to solve, check, and generate proof-of-work challenges using kCTF’s scheme.

```use kctf_pow::KctfPow;

fn main() {
let pow = KctfPow::new();
// decoding then solving a challenge
let chall = pow.decode_challenge("s.AAAAMg==.H+fPiuL32DPbfN97cpd0nA==").unwrap();
println!("{}", chall.solve());
// decoding then checking a challenge
let chall = pow.decode_challenge("s.AAAAMg==.NDtqORW1uZlIgzszbdMGZA==").unwrap();
let sol = "s.NUH3arymnKB+ysUGdv+67ypDamn4wOKCPORB2ivWE1Yhinam2v4S6q4nAoC5LP97LScdVoq+NuFVF++Win5mNRYZS6bJAs8fk0h8XgvfcC/7JfmFISqeCIo/CIUgIucVAM+eGDjqitRULGXqIOyviJoJjW8DMouMRuJM/3eg/z18kutQHkX0N3sqPeF7Nzkk8S3Bs6aiHUORM30syUKYug==";
assert_eq!(chall.check(sol), Ok(true));
assert_eq!(chall.check("s.asdf"), Ok(false));
// generating a random challenge of difficulty 50
let chall = pow.generate_challenge(50);
println!("{}", chall);
}```

## Structs

 Challenge A proof-of-work challenge. ChallengeParams The parameters for a proof-of-work challenge. KctfPow A proof-of-work system for kCTF.