From 03ecb026ff4d0e545cf21d463807b40265441bb3 Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Fri, 9 Feb 2024 19:19:03 +0100
Subject: fuzz: improve fuzzing coverage (#2309)

---
 fuzz/fuzz_alg_crc32_md5.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'fuzz/fuzz_alg_crc32_md5.c')

diff --git a/fuzz/fuzz_alg_crc32_md5.c b/fuzz/fuzz_alg_crc32_md5.c
index 265bc0417..15c817989 100644
--- a/fuzz/fuzz_alg_crc32_md5.c
+++ b/fuzz/fuzz_alg_crc32_md5.c
@@ -1,7 +1,9 @@
 #include "ndpi_api.h"
+#include "ndpi_md5.h"
 
 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   u_char hash[16];
+  ndpi_MD5_CTX ctx;
   struct ndpi_popcount popcount;
   char *str;
 
@@ -14,8 +16,14 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   ndpi_crc16_xmodem(data, size);
   ndpi_crc16_x25(data, size);
   ndpi_crc32(data, size);
+
   ndpi_md5(data, size, hash);
 
+  ndpi_MD5Init(&ctx);
+  ndpi_MD5Update(&ctx, data, size / 2);
+  ndpi_MD5Update(&ctx, data + size / 2, size - size / 2);
+  ndpi_MD5Final(hash, &ctx);
+
   ndpi_murmur_hash((const char *)data, size);
   ndpi_quick_hash(data, size);
 
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