Add fuzzer for ZkBinary::decode()

fuzz/Cargo.toml

@@ -36,3 +36,9 @@ name = "zkas-lexer"
 path = "fuzz_targets/zkas_lexer.rs"
 test = false
 doc = false
+
+[[bin]]
+name = "zkas-decoder"
+path = "fuzz_targets/zkas_decoder.rs"
+test = false
+doc = false

fuzz/fuzz_targets/zkas_decoder.rs

@@ -0,0 +1,27 @@
+/* This file is part of DarkFi (https://dark.fi)
+ *
+ * Copyright (C) 2020-2023 Dyne.org foundation
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#![no_main]
+use libfuzzer_sys::fuzz_target;
+
+use darkfi::zkas::ZkBinary;
+
+fuzz_target!(|data: &[u8]| {
+        let _dec = ZkBinary::decode(data);
+    }
+);