int read_security_data(const u8 metadata_resource[],
u64 metadata_resource_len, struct wim_security_data **sd_p);
void print_security_data(const struct wim_security_data *sd);
u8 *write_security_data(const struct wim_security_data *sd, u8 *p);
void free_security_data(struct wim_security_data *sd);
int read_security_data(const u8 metadata_resource[],
u64 metadata_resource_len, struct wim_security_data **sd_p);
void print_security_data(const struct wim_security_data *sd);
u8 *write_security_data(const struct wim_security_data *sd, u8 *p);
void free_security_data(struct wim_security_data *sd);