Description
bool
openssl_sign ( string data,
string signature, mixed priv_key_id)
警告 |
這個函數是
實驗性質的。這個函數的行為、名稱、 和關於此函數的任何其他文件
在未來PHP的發行中可能會在不通知的情況下改變。 使用此延伸需自行承擔風險。
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成功回傳TRUE失敗回傳FALSE。 If successful the signature is
returned in signature.
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.
範例 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);
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See also openssl_verify().