extern void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned long *size);
extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
extern int write_sha1_file(char *buf, unsigned len, unsigned char *return_sha1);
-extern int check_sha1_signature(unsigned char *sha1, void *buf, unsigned long size);
+extern int check_sha1_signature(unsigned char *sha1, void *buf, unsigned long size, const char *type);
/* Convert to/from hex/sha1 representation */
extern int get_sha1_hex(const char *hex, unsigned char *sha1);