added fuzzing script

fuzz.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+#
+# Usage:
+# fuzz.sh <t>
+#
+# t: How many seconds to fuzz
+set -e
+
+# Cleanup on exit
+trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT
+
+# How many seconds to fuzz
+T=${1?param missing - time to fuzz}
+
+FUZZ="cargo +nightly fuzz"
+$FUZZ build
+
+# Fuzz all targets
+targets=$($FUZZ list)
+for target in $targets; do
+    $FUZZ run $target -- -max_total_time=$T &
+done
+
+# Stop as soon as a fuzzer job fails
+wait -n

src/error.rs

@@ -58,7 +58,7 @@ pub enum KemError {
 
 pub type KemResult<T> = Result<T, KemError>;
 
-// Errors that can happen during DH operations
+/// Errors that can happen during DH operations
 #[derive(Debug, Error, Display)]
 pub enum DhError {
     /// Error generating keys