X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Futils.h;h=67c94f3d3927330ed0f0ca9bd2c0547f8c9f3a3f;hb=fa4a01e4a27dd4b3a57077acbd0e69f95d55944a;hp=648a60717a0e9c8bd1ce6c931d9783076dab182d;hpb=06b8271ed5d56c9bd3de459d95907d0ef4f0ea3c;p=tinc

diff --git a/src/utils.h b/src/utils.h
index 648a6071..67c94f3d 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -21,11 +21,11 @@
 #ifndef __TINC_UTILS_H__
 #define __TINC_UTILS_H__
 
-extern int hex2bin(char *src, char *dst, int length);
-extern int bin2hex(char *src, char *dst, int length);
+extern int hex2bin(const char *src, char *dst, int length);
+extern int bin2hex(const char *src, char *dst, int length);
 
-extern int b64encode(char *src, char *dst, int length);
-extern int b64decode(char *src, char *dst, int length);
+extern int b64encode(const char *src, char *dst, int length);
+extern int b64decode(const char *src, char *dst, int length);
 
 #ifdef HAVE_MINGW
 extern const char *winerror(int);