int parse_aes_key(char *key, uint8_t *bin_key);
-extern int fw_printenv(int argc, char *argv[]);
-extern char *fw_getenv (char *name);
-extern int fw_setenv (int argc, char *argv[]);
-extern int fw_parse_script(char *fname);
-extern int fw_env_open(void);
-extern int fw_env_write(char *name, char *value);
-extern int fw_env_close(void);
+int fw_printenv(int argc, char *argv[]);
+char *fw_getenv(char *name);
+int fw_setenv(int argc, char *argv[]);
+int fw_parse_script(char *fname);
+int fw_env_open(void);
+int fw_env_write(char *name, char *value);
+int fw_env_close(void);
-extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned);
+unsigned long crc32(unsigned long, const unsigned char *, unsigned);