openssl_open
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
openssl_open — Open sealed data
Description
openssl_open ( string $sealed_data , string &$open_data , string $env_key , mixed $priv_key_id [, string $method = "RC4" [, string $iv ]] ) : bool
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.
Parameters
-
sealed_data -
open_data -
If the call is successful the opened data is returned in this parameter.
-
env_key -
priv_key_id -
method -
The cipher method.
CautionThe default value (
'RC4') is considered insecure. It is strongly recommended to explicitly specify a secure cipher method. -
iv -
The initialization vector.
Return Values
Returns true on success or false on failure.
Examples
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);
?> See Also
- openssl_seal() - Seal (encrypt) data
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.openssl-open.php