The code below works as expected. BUT if you run openssl_error_string() after the openssl methods it shows error:0E06D06C:configuration file routines:NCONF_get_string:no value which is some notice I have not been able to find documentation on.
Further note that according to http://www.php.net/manual/en/function.openssl-error-string.php you could be seeing mis-leading errors as error messages are queued:
Be careful when using this function to check errors, as it seems to read from a buffer of > errors, which could include errors from another script or process that was using openssl > functions. (I was surprised to find it returing error messages before I had called any > openssl_* functions)
<?php
/* Create the private and public key */
$res = openssl_pkey_new();
openssl_error_string(); // May throw error even though its working fine!
/* Extract the private key from $res to $privKey */
openssl_pkey_export($res, $privKey);
openssl_error_string(); // May throw error even though its working fine!
/* Extract the public key from $res to $pubKey */
$pubKey = openssl_pkey_get_details($res);
$pubKey = $pubKey["key"];
$data="i.amniels.com is a great website!";
/* Encrypt the data using the public key
* The encrypted data is stored in $encrypted */
openssl_public_encrypt($data, $encrypted, $pubKey);
/* Decrypt the data using the private key and store the
* result in $decrypted. */
openssl_private_decrypt($encrypted, $decrypted, $privKey);
echo $decrypted;
?>