(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
openssl_pkcs7_encrypt — 加密一个 S/MIME 消息
$infile
, string $outfile
, mixed $recipcerts
, array $headers
, int $flags = 0
, int $cipherid = OPENSSL_CIPHER_RC2_40
) : bool
openssl_pkcs7_encrypt() 获取文件名为infile的文件内容并使用 RC2 40位的密码将之加密，以至于他们只能被预期的名为recipcerts的接收者阅读。
成功时返回 true， 或者在失败时返回 false。
示例 #1 openssl_pkcs7_encrypt() 范例
<?php
// the message you want to encrypt and send to your secret agent
// in the field, known as nighthawk. You have his certificate
// in the file nighthawk.pem
$data = <<<EOD
Nighthawk,
Top secret, for your eyes only!
The enemy is closing in! Meet me at the cafe at 8.30am
to collect your forged passport!
HQ
EOD;
// load key
$key = file_get_contents("nighthawk.pem");
// save message to file
$fp = fopen("msg.txt", "w");
fwrite($fp, $data);
fclose($fp);
// encrypt it
if (openssl_pkcs7_encrypt("msg.txt", "enc.txt", $key,
array("To" => "nighthawk@example.com", // keyed syntax
"From: HQ <hq@example.com>", // indexed syntax
"Subject" => "Eyes only"))) {
// message encrypted - send it!
exec(ini_get("sendmail_path") . " < enc.txt");
}
?>