/*
- Copyright 2015 IoT.bzh
+ Copyright 2015, 2016, 2017 IoT.bzh
author: José Bollo <jose.bollo@iot.bzh>
*/
-extern char *base64encw(const char *buffer, int length, int width);
-extern char *base64enc(const char *buffer, int length);
-extern int base64dec(const char *buffer, char **output);
+extern char *base64encw(const char *buffer, size_t length, unsigned width);
+extern char *base64enc(const char *buffer, size_t length);
+extern ssize_t base64dec(const char *buffer, char **output);
extern int base64eq(const char *buf1, const char *buf2);