fuzzing
This commit is contained in:
parent
8df560aaa8
commit
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GPG Key ID:
AD9F0F08E855ED88
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artifacts
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"arbitrary",
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"libfuzzer-sys",
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"pow_sha256",
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"sha2",
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name = "version_check"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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|
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@ -0,0 +1,28 @@
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[package]
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name = "pow_sha256-fuzz"
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version = "0.0.0"
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authors = ["Automatically generated"]
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publish = false
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edition = "2018"
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[package.metadata]
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cargo-fuzz = true
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[dependencies]
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libfuzzer-sys = "0.4"
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sha2 = "0.9"
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arbitrary = { version = "1", features = ["derive"] }
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[dependencies.pow_sha256]
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path = ".."
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# Prevent this from interfering with workspaces
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[workspace]
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members = ["."]
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[[bin]]
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name = "fuzz_target_1"
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path = "fuzz_targets/fuzz_target_1.rs"
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test = false
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doc = false
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@ -0,0 +1,17 @@
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#![no_main]
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use libfuzzer_sys::fuzz_target;
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use pow_sha256::dev::score;
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use sha2::{Digest, Sha256};
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||||
#[derive(Clone, Debug, arbitrary::Arbitrary)]
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struct Data {
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salt: Vec<u8>,
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message: Vec<u8>,
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count: u64,
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}
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fuzz_target!(|data: Data| {
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// fuzzed code goes here
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let prefix_sha = Sha256::new().chain(&data.salt).chain(&data.message);
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let _result = score(prefix_sha.clone(), data.count);
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});
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51
src/lib.rs
51
src/lib.rs
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@ -23,7 +23,7 @@
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use std::marker::PhantomData;
|
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use derive_builder::Builder;
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use num::Num;
|
||||
//use num::Num;
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use serde::{Deserialize, Serialize};
|
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use sha2::{Digest, Sha256};
|
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@ -73,7 +73,7 @@ impl Config {
|
|||
let difficulty = get_difficulty(difficulty);
|
||||
while result < difficulty {
|
||||
n += 1;
|
||||
result = score(prefix_sha.clone(), n);
|
||||
result = dev::score(prefix_sha.clone(), n);
|
||||
}
|
||||
PoW {
|
||||
nonce: n,
|
||||
|
|
@ -96,7 +96,7 @@ impl Config {
|
|||
where
|
||||
T: Serialize,
|
||||
{
|
||||
score(Sha256::new().chain(&self.salt).chain(target), pow.nonce)
|
||||
dev::score(Sha256::new().chain(&self.salt).chain(target), pow.nonce)
|
||||
}
|
||||
|
||||
/// Verifies that the PoW is indeed generated out of the phrase provided.
|
||||
|
|
@ -128,27 +128,32 @@ impl Config {
|
|||
}
|
||||
}
|
||||
|
||||
fn score(prefix_sha: Sha256, nonce: u64) -> u128 {
|
||||
first_bytes_as_u128(
|
||||
prefix_sha
|
||||
.chain(&nonce.to_be_bytes()) // to_be_bytes() converts to network endian
|
||||
.finalize()
|
||||
.as_slice(),
|
||||
)
|
||||
}
|
||||
pub mod dev {
|
||||
use super::*;
|
||||
|
||||
/// # Panics
|
||||
///
|
||||
/// panics if inp.len() < 16
|
||||
fn first_bytes_as_u128(inp: &[u8]) -> u128 {
|
||||
use bincode::config::*;
|
||||
DefaultOptions::new()
|
||||
.with_fixint_encoding()
|
||||
.allow_trailing_bytes()
|
||||
.with_no_limit()
|
||||
.with_big_endian()
|
||||
.deserialize(&inp)
|
||||
.unwrap()
|
||||
pub fn score(prefix_sha: Sha256, nonce: u64) -> u128 {
|
||||
first_bytes_as_u128(
|
||||
prefix_sha
|
||||
.chain(&nonce.to_string()) //used to be: to_be_bytes() converts to network endian
|
||||
// chain() expexets something that can be converted to &[u8], String is fine
|
||||
.finalize()
|
||||
.as_slice(),
|
||||
)
|
||||
}
|
||||
|
||||
/// # Panics
|
||||
///
|
||||
/// panics if inp.len() < 16
|
||||
fn first_bytes_as_u128(inp: &[u8]) -> u128 {
|
||||
use bincode::config::*;
|
||||
DefaultOptions::new()
|
||||
.with_fixint_encoding()
|
||||
.allow_trailing_bytes()
|
||||
.with_no_limit()
|
||||
.with_big_endian()
|
||||
.deserialize(&inp)
|
||||
.unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
// utility function to get u128 difficulty factor from u32
|
||||
|
|
|
|||
Loading…
Reference in New Issue