fuzz

.gitignore

@@ -1,3 +1,6 @@
 /target
 /Cargo.lock
-/.idea
+/.idea
+/fuzz/corpus/
+/fuzz/Cargo.lock
+/fuzz/target/

fuzz/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "fips203-fuzz"
+version = "0.0.0"
+publish = false
+edition = "2021"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+
+[dependencies.fips203]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[profile.release]
+debug = 1
+
+[[bin]]
+name = "fuzz_all"
+path = "fuzz_targets/fuzz_all.rs"
+test = false
+doc = false

fuzz/fuzz_targets/fuzz_all.rs

@@ -0,0 +1,18 @@
+#![no_main]
+// rustup default nightly
+// head -c 3200 </dev/urandom > seed1
+// cargo fuzz run fuzz_all -j 4
+
+use fips203::ml_kem_512;
+use fips203::traits::{Decaps, Encaps, SerDes};
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: [u8; 1632+800+768]| { // dk_len + ek+len + ct_len = 3200
+
+ let ek = ml_kem_512::EncapsKey::try_from_bytes(data[0..800].try_into().unwrap()).unwrap();
+ let dk = ml_kem_512::DecapsKey::try_from_bytes(data[800..800+1632].try_into().unwrap()).unwrap();
+ let ct = ml_kem_512::CipherText::try_from_bytes(data[800+1632..800+1632+768].try_into().unwrap()).unwrap();
+
+ let _result = ek.try_encaps_vt();
+ let _result = dk.try_decaps_vt(&ct);
+});