#ifndef HEX__H_INCLUDED
#define HEX__H_INCLUDED
-const char *tohex(uint8 *data, int len, char *buf);
-void unhex(const char *what, const char *txt, uint8 *datar, int *lenr,
+#include <stdint.h>
+
+const char *tohex(uint8_t *data, int len, char *buf);
+void unhex(const char *what, const char *txt, uint8_t *datar, int *lenr,
int minlen, int maxlen);
#endif