How do I create a new key pair and save them in files? OpenSSL I guess. I have Windows 7 and Xampp, which has OpenSSL in the APache directory (although I am having some problems with openssl_pkey_new() (see Why does openssl_pkey_new() fail?).
Anyway, once I get OpenSSL configured, what does the code look like to create a new key pair and save them in files?
To generate a key pair:
<?php
/* Create the private and public key */
$res = openssl_pkey_new();
/* Extract the private key from $res to $privKey */
openssl_pkey_export($res, $privKey);
/* Extract the public key from $res to $pubKey */
$pubKey = openssl_pkey_get_details($res);
$pubKey = $pubKey["key"];
?>
To save the key to a target file:
file_put_contents($file, $key);
