feat: Add fuzzing for libsodium allocator

.github/workflows/qc.yaml

@@ -146,3 +146,5 @@ jobs:
           cargo fuzz run fuzz_handle_msg -- -max_total_time=5
           ulimit -s 8192000 && RUST_MIN_STACK=33554432000 && cargo fuzz run fuzz_kyber_encaps -- -max_total_time=5
           cargo fuzz run fuzz_mceliece_encaps -- -max_total_time=5
+          cargo fuzz run fuzz_box_sodium_alloc -- -max_total_time=5
+          cargo fuzz run fuzz_vec_sodium_alloc -- -max_total_time=5

fuzz/Cargo.toml

@@ -47,3 +47,15 @@ name = "fuzz_kyber_encaps"
 path = "fuzz_targets/kyber_encaps.rs"
 test = false
 doc = false
+
+[[bin]]
+name = "fuzz_box_sodium_alloc"
+path = "fuzz_targets/box_sodium_alloc.rs"
+test = false
+doc = false
+
+[[bin]]
+name = "fuzz_vec_sodium_alloc"
+path = "fuzz_targets/vec_sodium_alloc.rs"
+test = false
+doc = false

fuzz/fuzz_targets/box_sodium_alloc.rs

@@ -0,0 +1,12 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+use rosenpass_sodium::{
+    alloc::{Alloc as SodiumAlloc, Box as SodiumBox},
+    init,
+};
+
+fuzz_target!(|data: &[u8]| {
+    let _ = init();
+    let _ = SodiumBox::new_in(data, SodiumAlloc::new());
+});

fuzz/fuzz_targets/vec_sodium_alloc.rs

@@ -0,0 +1,13 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+use rosenpass_sodium::{
+    alloc::{Alloc as SodiumAlloc, Vec as SodiumVec},
+    init,
+};
+
+fuzz_target!(|data: &[u8]| {
+    let _ = init();
+    let mut vec = SodiumVec::new_in(SodiumAlloc::new());
+    vec.extend_from_slice(data);
+});