<?php
ini_set('display_errors', 1);
$config = array(
"config" => 'D:\wamp\bin\php\php5.5.12\extras\ssl\openssl.cnf',
"private_key_bits" => 2048,
"private_key_type" => OPENSSL_KEYTYPE_RSA,
);
// Create the private and public key
$res = openssl_pkey_new($config);
if ($res === false) die('Failed to generate key pair.'."\n");
if (!openssl_pkey_export($res, $privKey, "phrase", $config)) die('Failed to retrieve private key.'."\n");
// Extract the private key from $res to $privKey
openssl_pkey_export($res, $privKey, "phrase", $config);
echo "<br/>";
echo "Private Key = ".$privKey;
echo "<br/>";
// Extract the public key from $res to $pubKey
$pubKey = openssl_pkey_get_details($res);
$pubKey = $pubKey["key"];
echo "<br/>";
echo "Public Key = ".$pubKey;
echo "<br/>";
$data = 'plaintext data goes here';
// Encrypt the data to $encrypted using the public key
openssl_public_encrypt($data, $encrypted, $pubKey);
echo "<br/>";
echo "Encrypted Data = ".$encrypted;
echo "<br/>";
// Decrypt the data using the private key and store the results in $decrypted
openssl_private_decrypt($encrypted, $decrypted, openssl_pkey_get_private($privKey, "phrase"));
echo "<br/>";
echo "Decrypted Data = ".$decrypted;
echo "<br/>";
?>
