1 files changed, 3 insertions, 9 deletions

diff --git a/src/lib/libcrypto/md5/md5.c b/src/lib/libcrypto/md5/md5.c
index 744c66f005..3bc558f0f2 100644
--- a/src/lib/libcrypto/md5/md5.c
+++ b/src/lib/libcrypto/md5/md5.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: md5.c,v 1.23 2024/06/01 07:36:16 tb Exp $ */
+/* $OpenBSD: md5.c,v 1.24 2025/01/19 07:51:41 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -278,19 +278,13 @@ MD5_Update(MD5_CTX *c, const void *data_, size_t len)
 {
         const unsigned char *data = data_;
         unsigned char *p;
-        MD5_LONG l;
         size_t n;
 
         if (len == 0)
                 return 1;
 
-        l = (c->Nl + (((MD5_LONG)len) << 3))&0xffffffffUL;
-        /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to
-         * Wei Dai <weidai@eskimo.com> for pointing it out. */
-        if (l < c->Nl) /* overflow */
-                c->Nh++;
-        c->Nh+=(MD5_LONG)(len>>29);     /* might cause compiler warning on 16-bit */
-        c->Nl = l;
+        /* Update message bit counter. */
+        crypto_add_u32dw_u64(&c->Nh, &c->Nl, (uint64_t)len << 3);
 
         n = c->num;
         if (n != 0) {