rust-bitcoin-unsafe-fast/fuzz/fuzz_targets/hashes/cbor.rs

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use bitcoin::hashes::Hmac;
use bitcoin::hashes::{sha1, sha512, ripemd160, sha256d};
use honggfuzz::fuzz;
use serde::{Deserialize, Serialize};
#[derive(Deserialize, Serialize)]
struct Hmacs {
sha1: Hmac<sha1::Hash>,
sha512: Hmac<sha512::Hash>,
}
#[derive(Deserialize, Serialize)]
struct Main {
hmacs: Hmacs,
ripemd: ripemd160::Hash,
sha2d: sha256d::Hash,
}
fn do_test(data: &[u8]) {
if let Ok(m) = serde_cbor::from_slice::<Main>(data) {
let vec = serde_cbor::to_vec(&m).unwrap();
assert_eq!(data, &vec[..]);
}
}
fn main() {
loop {
fuzz!(|d| { do_test(d) });
}
}
#[cfg(test)]
mod tests {
fn extend_vec_from_hex(hex: &str, out: &mut Vec<u8>) {
let mut b = 0;
for (idx, c) in hex.as_bytes().iter().enumerate() {
b <<= 4;
match *c {
b'A'..=b'F' => b |= c - b'A' + 10,
b'a'..=b'f' => b |= c - b'a' + 10,
b'0'..=b'9' => b |= c - b'0',
_ => panic!("Bad hex"),
}
if (idx & 1) == 1 {
out.push(b);
b = 0;
}
}
}
#[test]
fn duplicate_crash() {
let mut a = Vec::new();
extend_vec_from_hex("00000", &mut a);
super::do_test(&a);
}
}