#ifndef __TINC_UTILS_H__
#define __TINC_UTILS_H__
-extern void hex2bin(char *src, char *dst, int length);
-extern void 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(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);
#define sockinuse(x) ((x) == EADDRINUSE)
#endif
-extern unsigned int bitfield_to_int(void *bitfield, size_t size);
+extern unsigned int bitfield_to_int(const void *bitfield, size_t size);
#endif /* __TINC_UTILS_H__ */