56 lines
1.2 KiB
PHP
56 lines
1.2 KiB
PHP
<?php
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namespace PHPCensor\Helper;
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use PHPCensor\Config;
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/**
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* Helper class for dealing with SSH keys.
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*/
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class SshKey
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{
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/**
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* Uses ssh-keygen to generate a public/private key pair.
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*
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* @return array
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*/
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public function generate()
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{
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$tempPath = sys_get_temp_dir() . '/';
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$keyFile = $tempPath . md5(microtime(true));
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if (!is_dir($tempPath)) {
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mkdir($tempPath);
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}
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$return = ['private_key' => '', 'public_key' => ''];
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$sshStrength = Config::getInstance()->get('php-censor.ssh.strength', 2048);
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$sshComment = Config::getInstance()->get('php-censor.ssh.comment', 'admin@php-censor');
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$output = @shell_exec(
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sprintf(
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'ssh-keygen -t rsa -b %s -f %s -N "" -C "%s"',
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$sshStrength,
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$keyFile,
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$sshComment
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)
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);
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if (!empty($output)) {
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$pub = file_get_contents($keyFile . '.pub');
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$prv = file_get_contents($keyFile);
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if (!empty($pub)) {
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$return['public_key'] = $pub;
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}
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if (!empty($prv)) {
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$return['private_key'] = $prv;
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}
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}
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return $return;
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}
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}
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