PhabricatorSSHKeyGenerator.php
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	<?php

	final class PhabricatorSSHKeyGenerator extends Phobject {

	public static function assertCanGenerateKeypair() {
	$binary = 'ssh-keygen';
	if (!Filesystem::resolveBinary($binary)) {
	throw new Exception(
	pht(
	'Can not generate keys: unable to find "%s" in PATH!',
	$binary));
	}
	}

	public static function generateKeypair() {
	self::assertCanGenerateKeypair();

	$tempfile = new TempFile();
	$keyfile = dirname($tempfile).DIRECTORY_SEPARATOR.'keytext';

	execx(
	'ssh-keygen -t rsa -N %s -f %s',
	'',
	$keyfile);

	$public_key = Filesystem::readFile($keyfile.'.pub');
	$private_key = Filesystem::readFile($keyfile);

	return array($public_key, $private_key);
	}

	}