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openpgp-php
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Merge pull request #16 from sivig/phpseclib-2 

use phpseclib 2.0
This commit is contained in:
Stephen Paul Weber 2015-11-30 14:49:15 -05:00
parent d37e91efda ff4bd67e6b
commit a1fe3a6e58
3 changed files with 16 additions and 16 deletions
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2
composer.json
View File

@ -13,7 +13,7 @@
}
],
"require": {
"phpseclib/phpseclib": "~0.3"
"phpseclib/phpseclib": "2.0.0"
},
"require-dev": {
"phpunit/phpunit": "~4.0"

6
lib/openpgp_crypt_rsa.php
View File

@ -7,7 +7,11 @@
*/
// From http://phpseclib.sourceforge.net/
require_once 'Crypt/RSA.php';
use phpseclib\Crypt\RSA as Crypt_RSA;
use phpseclib\Math\BigInteger as Math_BigInteger;
define('CRYPT_RSA_ENCRYPTION_PKCS1', Crypt_RSA::ENCRYPTION_PKCS1);
define('CRYPT_RSA_SIGNATURE_PKCS1', Crypt_RSA::SIGNATURE_PKCS1);
require_once dirname(__FILE__).'/openpgp.php';
@include_once dirname(__FILE__).'/openpgp_crypt_symmetric.php'; /* For encrypt/decrypt */

24
lib/openpgp_crypt_symmetric.php
View File

@ -1,20 +1,24 @@
<?php
use phpseclib\Crypt\TripleDES as Crypt_TripleDES;
use phpseclib\Crypt\AES as Crypt_AES;
use phpseclib\Crypt\Random;
define('CRYPT_DES_MODE_CFB', Crypt_TripleDES::MODE_CFB);
define('CRYPT_AES_MODE_CFB', Crypt_AES::MODE_CFB);
require_once dirname(__FILE__).'/openpgp.php';
@include_once dirname(__FILE__).'/openpgp_crypt_rsa.php';
@include_once dirname(__FILE__).'/openpgp_mcrypt_wrapper.php';
@include_once 'Crypt/AES.php';
@include_once 'Crypt/TripleDES.php';
require_once 'Crypt/Random.php'; // part of phpseclib is absolutely required
class OpenPGP_Crypt_Symmetric {
public static function encrypt($passphrases_and_keys, $message, $symmetric_algorithm=9) {
list($cipher, $key_bytes, $key_block_bytes) = self::getCipher($symmetric_algorithm);
if(!$cipher) throw new Exception("Unsupported cipher");
$prefix = crypt_random_string($key_block_bytes);
$prefix = Random::string($key_block_bytes);
$prefix .= substr($prefix, -2);
$key = crypt_random_string($key_bytes);
$key = Random::string($key_bytes);
$cipher->setKey($key);
$to_encrypt = $prefix . $message->to_bytes();
@ -36,7 +40,7 @@ class OpenPGP_Crypt_Symmetric {
$esk = pack('n', OpenPGP::bitlength($esk)) . $esk;
array_unshift($encrypted, new OpenPGP_AsymmetricSessionKeyPacket($pass->algorithm, $pass->fingerprint(), $esk));
} else if(is_string($pass)) {
$s2k = new OpenPGP_S2K(crypt_random_string(10));
$s2k = new OpenPGP_S2K(Random::string(10));
$cipher->setKey($s2k->make_key($pass, $key_bytes));
$esk = $cipher->encrypt(chr($symmetric_algorithm) . $key);
array_unshift($encrypted, new OpenPGP_SymmetricSessionKeyPacket($s2k, $esk, $symmetric_algorithm));
@ -143,11 +147,9 @@ class OpenPGP_Crypt_Symmetric {
$cipher = NULL;
switch($algo) {
case 2:
if(class_exists('Crypt_TripleDES')) {
$cipher = new Crypt_TripleDES(CRYPT_DES_MODE_CFB);
$key_bytes = 24;
$key_block_bytes = 8;
}
break;
case 3:
if(defined('MCRYPT_CAST_128')) {
@ -155,22 +157,16 @@ class OpenPGP_Crypt_Symmetric {
}
break;
case 7:
if(class_exists('Crypt_AES')) {
$cipher = new Crypt_AES(CRYPT_AES_MODE_CFB);
$cipher->setKeyLength(128);
}
break;
case 8:
if(class_exists('Crypt_AES')) {
$cipher = new Crypt_AES(CRYPT_AES_MODE_CFB);
$cipher->setKeyLength(192);
}
break;
case 9:
if(class_exists('Crypt_AES')) {
$cipher = new Crypt_AES(CRYPT_AES_MODE_CFB);
$cipher->setKeyLength(256);
}
break;
}
if(!$cipher) return array(NULL, NULL, NULL); // Unsupported cipher