d7_encrypt.module

<?php



function encryptData($data) {
  $plainText = json_encode($data);
print '$Plaintext = json_encode($data)' . " \nVAL:$plainText \n \n";
  $encryptionKey = 'p@SSword';
print "\$encryptionKey = 'p@SSword' \nVAL:$encryptionKey \n \n";
  $bytesToBeEncrypted = $plainText;

print "\$bytesToBeEncrypted = utf8_encode($plainText) \nVAL:$bytesToBeEncrypted \n \n";

  $passwordBytes = utf8_encode($encryptionKey);
  print '$passwordBytes = utf8_encode($encryptionKey)';
  print "\nVAL:$passwordBytes \n \n";
  $saltBytes = array(1,2,3,4,5,6,7,8);

  print '$saltBytes = array(1,2,3,4,5,6,7,8);' . "\n \n";
  $saltBytesstring = "";
  print "VAL:";
  print_r($saltBytes);
  print '$saltBytesstring = "";' . "\n \n";
  for($i=0;$i<count($saltBytes);$i++){ 
      $saltBytesstring .= chr($saltBytes[$i]);
  }

  print 'for($i=0;$i<count($saltBytes);$i++){ echo $i;
      $saltBytesstring .= chr($saltBytes[$i]);
  }' . "\n \n";

  print "\$saltBytes = \nVAL: $saltBytesstring \n";
  print "note: the value of \$saltBytesstring is not a visible ascii value \n \n";

  $dev = hash_pbkdf2('sha256', $passwordBytes, $saltBytesstring, 10000, 48, true);
  print '$dev = hash_pbkdf2(\'sha256\', $passwordBytes, $saltBytesstring, 10000, 48, true);';
  print "\n VAL:$dev \n \n";
  $key = substr($dev, 0, 32); //Keylength: 32
  print '$key = substr($dev, 0, 32); //Keylength: 32';
  print "\n VAL:$key \n \n";
  $iv = substr($dev, 32, 16); // IV-length: 16
  print '$iv = substr($dev, 32, 16); // IV-length: 16';
  print "\n VAL:$iv \n \n";

  $method = 'aes-256-cbc';
  print '$method = \'aes-256-cbc\';';
  print "\n VAL:$method \n \n";

  $encrypted = base64_encode(openssl_encrypt($bytesToBeEncrypted, $method, $key, OPENSSL_RAW_DATA, $iv));
  print '$encrypted = base64_encode(openssl_encrypt($bytesToBeEncrypted, $method, $key, OPENSSL_RAW_DATA, $iv));';
  print "\nVAL:$encrypted \n \n";

  $encrypted = UrlEncodeBase64($encrypted);
  print '$encrypted = UrlEncodeBase64($encrypted);';
  return $encrypted;
}

function UrlEncodeBase64($str) {
//  $str = str_replace('+', '.', $str);
//  $str = str_replace('/', '_', $str);
//  $str = str_replace('=', '-', $str);
  $str = str_replace('+', '-', $str);
  $str = str_replace('/', '_', $str);
  $str = str_replace('=', '.', $str);
  return $str;
}


$submission = array('Year' => 2020, 'PlanId' => 'P00000000001', 'Zipcode' => "06443", 'Expires' => '2020-10-13T23:59:59.303');
print "\n \nVAL:\n" . encryptData($submission) . "\n \n";
?>