int rv;
int ret;
SECKEY_HasKeyDBPassword(SECKEYKeyDBHandle *handle){    DBT checkkey, checkdata;    int rv;    if (handle == NULL) {	return(SECFailure);    }    checkkey.data = KEYDB_PW_CHECK_STRING;    checkkey.size = KEYDB_PW_CHECK_LEN;        rv = (* handle->db->get)(handle->db, &checkkey, &checkdata, 0 );    if ( rv ) {	return(SECFailure);    }    return(SECSuccess);}