PHP ʖ²ἯTH º󍋼/A openssl_sign Description ¾¯¸漯B openssl_sign() computes a signature for the specified data by using SHA1 for hashing followed by encryption using the private key associated with priv_key_id. Note that the data itself is not encrypted. =ד 1. openssl_sign() example // $data is assumed to contain the data to be signed // fetch private key from file and ready it $fp = fopen("/src/openssl-0.9.6/demos/sign/key.pem", "r"); $priv_key = fread($fp, 8192); fclose($fp); $pkeyid = openssl_get_privatekey($priv_key); // compute signature openssl_sign($data, $signature, $pkeyid); // free the key from memory openssl_free_key($pkeyid); º󍋼/A ưµ㼯A openssl_seal ɏһ¼¶ openssl_verify