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   1  <?php
   2  
   3  final class PhabricatorSSHKeyGenerator extends Phobject {
   4  
   5    public static function assertCanGenerateKeypair() {
   6      $binary = 'ssh-keygen';
   7      if (!Filesystem::resolveBinary($binary)) {
   8        throw new Exception(
   9          pht(
  10            'Can not generate keys: unable to find "%s" in PATH!',
  11            $binary));
  12      }
  13    }
  14  
  15    public static function generateKeypair() {
  16      self::assertCanGenerateKeypair();
  17  
  18      $tempfile = new TempFile();
  19      $keyfile = dirname($tempfile).DIRECTORY_SEPARATOR.'keytext';
  20  
  21      execx(
  22        'ssh-keygen -t rsa -N %s -f %s',
  23        '',
  24        $keyfile);
  25  
  26      $public_key = Filesystem::readFile($keyfile.'.pub');
  27      $private_key = Filesystem::readFile($keyfile);
  28  
  29      return array($public_key, $private_key);
  30    }
  31  
  32  }