`type` enum('client', 'server') DEFAULT NULL,
`csr_name` varchar(255) NOT NULL DEFAULT '',
+ `csr_type` enum('CSR', 'SPKAC') NOT NULL,
`crt_name` varchar(255) NOT NULL DEFAULT '',
`created` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`modified` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',