PHP: Open sealed data

Description

bool openssl_open ( string $sealed_data , string &$open_data , string $env_key , mixed $priv_key_id )

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

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);

?>

openssl_open

Description

Parameters

Return Values

Examples

See Also