<?php

namespace PHPCensor\Helper;

/**

* Helper class for dealing with SSH keys.

*/

class SshKey

{

/**

* Uses ssh-keygen to generate a public/private key pair.

* @return array

*/

public function generate()

{

$tempPath = sys_get_temp_dir() . '/';

$keyFile = $tempPath . md5(microtime(true));

if (!is_dir($tempPath)) {

mkdir($tempPath);

}

$return = ['private_key' => '', 'public_key' => ''];

$output = @shell_exec('ssh-keygen -t rsa -b 2048 -f '.$keyFile.' -N "" -C "deploy@php-censor"');

if (!empty($output)) {

$pub = file_get_contents($keyFile . '.pub');

$prv = file_get_contents($keyFile);

if (!empty($pub)) {

$return['public_key'] = $pub;

}

if (!empty($prv)) {

$return['private_key'] = $prv;

}

}

return $return;

}

}