(PHP 4 >= 4.0.4, PHP 5, PHP 7)
openssl_open — Open sealed data
$sealed_data
, string &$open_data
, string $env_key
, mixed $priv_key_id
[, string $method = "RC4"
[, string $iv
]] )
openssl_open() opens (decrypts)
sealed_data using the private key associated with
the key identifier priv_key_id and the envelope key
env_key, and fills
open_data with the decrypted data.
The envelope key is generated when the
data are sealed and can only be used by one specific private key. See
openssl_seal() for more information.
sealed_data
open_dataIf the call is successful the opened data is returned in this parameter.
env_key
priv_key_id
methodThe cipher method.
ivThe initialization vector.
Returns TRUE on success or FALSE on failure.
| Version | Description |
|---|---|
| 7.0.0 |
The iv has been added.
|
| 5.3.0 |
The method has been added.
|
Example #1 openssl_open() example
<?php
// $sealed and $env_key are assumed to contain the sealed data
// and our envelope key, both given to us by the sealer.
// 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);
// decrypt the data and store it in $open
if (openssl_open($sealed, $open, $env_key, $pkeyid)) {
echo "here is the opened data: ", $open;
} else {
echo "failed to open data";
}
// free the private key from memory
openssl_free_key($pkeyid);
?>