From acb925f1e1db358669bcf797166efd84089f7894 Mon Sep 17 00:00:00 2001
From: Takayuki MATSUOKA <takayuki.matsuoka@gmail.com>
Date: Sun, 21 Feb 2016 23:20:47 +0900
Subject: [PATCH] Emphasis "xxHash is non-cryptographic algorithm"

Scine all short description in xxHash github repository and github.io has
"non-cryptographic", I added it for both short and long description in manpage.
---
 xxhsum.1.md | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/xxhsum.1.md b/xxhsum.1.md
index 14f1f24..68ea9d8 100644
--- a/xxhsum.1.md
+++ b/xxhsum.1.md
@@ -1,5 +1,5 @@
-xxhsum(1) -- print or check xxHash checksums
-============================================
+xxhsum(1) -- print or check xxHash non-cryptographic checksums
+==============================================================
 
 SYNOPSIS
 --------
@@ -18,6 +18,9 @@ md5sum(1).  Differences are: `xxhsum` doesn't have text/binary mode switch
 have short option switch for warning (`-w`).  `xxhsum` has hash bit width
 switch (`-H`);
 
+Since xxHash is non-cryptographic checksum algorithm, `xxhsum` should not be
+used any more for security related purposes.
+
 OPTIONS
 -------