openssl_sign
(PHP 4 >= 4.0.4, PHP 5)
openssl_sign — Generate signature
说明
bool openssl_sign ( string $data , string &$signature , mixed $priv_key_id [, int $signature_alg = OPENSSL_ALGO_SHA1 ] )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.
参数
- data
-
- signature
-
If the call was successful the signature is returned in signature.
- priv_key_id
-
- signature_alg
-
For more information see the list of Signature Algorithms.
返回值
成功时返回 TRUE， 或者在失败时返回 FALSE.
更新日志
| 版本 | 说明 |
|---|---|
| 5.0.0 | The signature_alg parameter was added. |
范例
Example #1 openssl_sign() example
<?php
// $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);
?>
参见
- openssl_verify() - Verify signature
