From 546d5c8f136dd4781d945ac8436ee00a77f9b073 Mon Sep 17 00:00:00 2001
From: millert <>
Date: Thu, 17 Jul 1997 05:57:37 +0000
Subject: [PATCH] Allow passing of a NULL digest to RMD160Final(3).

---
 src/lib/libc/hash/rmd160.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/lib/libc/hash/rmd160.c b/src/lib/libc/hash/rmd160.c
index 92874ab8..95b65ed6 100644
--- a/src/lib/libc/hash/rmd160.c
+++ b/src/lib/libc/hash/rmd160.c
@@ -371,12 +371,14 @@ void RMD160Final(digest, context)
 	    (context->length[1] << 3);
 	RMD160Transform(context->state, context->buffer);
 
-	for (i = 0; i < 20; i += 4) {
-		/* extracts the 8 least significant bits. */
-		digest[i]     =  context->state[i>>2];
-		digest[i + 1] = (context->state[i>>2] >>  8);
-		digest[i + 2] = (context->state[i>>2] >> 16);
-		digest[i + 3] = (context->state[i>>2] >> 24);
+	if (digest != NULL) {
+		for (i = 0; i < 20; i += 4) {
+			/* extracts the 8 least significant bits. */
+			digest[i]     =  context->state[i>>2];
+			digest[i + 1] = (context->state[i>>2] >>  8);
+			digest[i + 2] = (context->state[i>>2] >> 16);
+			digest[i + 3] = (context->state[i>>2] >> 24);
+		}
 	}
 }