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Merge branch 'cipher-revamp'

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This commit is contained in:
terrafrost 2016-03-14 23:00:21 -05:00
commit 574d36fb7d
10 changed files with 36 additions and 17 deletions
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3
phpseclib/Crypt/AES.php
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@ -65,6 +65,7 @@ class AES extends Rijndael
*
* @see \phpseclib\Crypt\Rijndael::setBlockLength()
* @access public
* @param int $length
* @throws \BadMethodCallException anytime it's called
*/
function setBlockLength($length)
@ -90,7 +91,7 @@ class AES extends Rijndael
case 256:
break;
default:
throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported');
throw new \LengthException('Key of size ' . $length . ' not supported by this algorithm. Only keys of sizes 128, 192 or 256 supported');
}
parent::setKeyLength($length);
}

28
phpseclib/Crypt/Base.php
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@ -793,7 +793,7 @@ abstract class Base
$this->changed = false;
}
if ($this->enchanged) {
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
mcrypt_generic_init($this->enmcrypt, $this->key, $this->_getIV($this->encryptIV));
$this->enchanged = false;
}
@ -856,7 +856,7 @@ abstract class Base
$ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
mcrypt_generic_init($this->enmcrypt, $this->key, $this->_getIV($this->encryptIV));
}
return $ciphertext;
@ -1010,8 +1010,8 @@ abstract class Base
*/
function decrypt($ciphertext)
{
if ($this->paddable) {
throw new \LengthException('The ciphertext length (' . strlen($ciphertext) . ') needs to be a multiple of the block size (' . $this->block_length . ')');
if ($this->paddable && strlen($ciphertext) % $this->block_size) {
throw new \LengthException('The ciphertext length (' . strlen($ciphertext) . ') needs to be a multiple of the block size (' . $this->block_size . ')');
}
if ($this->engine === self::ENGINE_OPENSSL) {
@ -1104,7 +1104,7 @@ abstract class Base
$this->changed = false;
}
if ($this->dechanged) {
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
mcrypt_generic_init($this->demcrypt, $this->key, $this->_getIV($this->decryptIV));
$this->dechanged = false;
}
@ -1149,7 +1149,7 @@ abstract class Base
$plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
if (!$this->continuousBuffer) {
mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
mcrypt_generic_init($this->demcrypt, $this->key, $this->_getIV($this->decryptIV));
}
return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
@ -1286,6 +1286,22 @@ abstract class Base
return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
}
/**
* Get the IV
*
* mcrypt requires an IV even if ECB is used
*
* @see self::encrypt()
* @see self::decrypt()
* @param string $iv
* @return string
* @access private
*/
function _getIV($iv)
{
return $this->mode == self::MODE_ECB ? str_repeat("\0", $this->block_size) : $iv;
}
/**
* OpenSSL CTR Processor
*

2
phpseclib/Crypt/RC4.php
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@ -209,7 +209,7 @@ class RC4 extends Base
throw new \LengthException('Key size of ' . $length . ' bytes is not supported by RC4. Keys must be between 1 and 256 bytes long');
}
parent::setKey($length);
parent::setKey($key);
}
/**

2
phpseclib/Crypt/RSA/PKCS.php
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@ -264,7 +264,7 @@ abstract class PKCS
return false;
}
$crypto = new DES();
$crypto = new DES(DES::MODE_CBC);
$crypto->setPassword($password, 'pbkdf1', 'md5', $salt, $iterationCount);
$key = $crypto->decrypt($key);
if ($key === false) {

2
phpseclib/Crypt/RSA/PKCS8.php
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@ -107,7 +107,7 @@ class PKCS8 extends PKCS
$salt = Random::string(8);
$iterationCount = 2048;
$crypto = new DES();
$crypto = new DES(DES::MODE_CBC);
$crypto->setPassword($password, 'pbkdf1', 'md5', $salt, $iterationCount);
$RSAPrivateKey = $crypto->encrypt($RSAPrivateKey);

2
phpseclib/Crypt/RSA/PuTTY.php
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@ -126,7 +126,7 @@ class PuTTY
switch ($encryption) {
case 'aes256-cbc':
$symkey = static::generateSymmetricKey($password, 32);
$crypto = new AES();
$crypto = new AES(AES::MODE_CBC);
}
if ($encryption != 'none') {

2
phpseclib/Crypt/TripleDES.php
View File

@ -275,7 +275,7 @@ class TripleDES extends DES
$this->changed = true;
$this->_setEngine();
if ($this->mode_3cbc && $length > 8) {
if ($this->mode_3cbc) {
$this->des[0]->setKey(substr($key, 0, 8));
$this->des[1]->setKey(substr($key, 8, 8));
$this->des[2]->setKey(substr($key, 16, 8));

2
phpseclib/Net/SSH1.php
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@ -662,6 +662,7 @@ class SSH1
$this->crypto->disablePadding();
$this->crypto->enableContinuousBuffer();
$this->crypto->setKey(substr($session_key, 0, 8));
// "The iv (initialization vector) is initialized to all zeroes."
$this->crypto->setIV(str_repeat("\0", 8));
break;
case self::CIPHER_3DES:
@ -669,6 +670,7 @@ class SSH1
$this->crypto->disablePadding();
$this->crypto->enableContinuousBuffer();
$this->crypto->setKey(substr($session_key, 0, 24));
// "All three initialization vectors are initialized to zero."
$this->crypto->setIV(str_repeat("\0", 8));
break;
//case self::CIPHER_RC4:

8
phpseclib/Net/SSH2.php
View File

@ -1815,26 +1815,26 @@ class SSH2
{
switch ($algorithm) {
case '3des-cbc':
return new TripleDES();
return new TripleDES(Base::MODE_CBC);
case '3des-ctr':
return new TripleDES(Base::MODE_CTR);
case 'aes256-cbc':
case 'aes192-cbc':
case 'aes128-cbc':
return new Rijndael();
return new Rijndael(Base::MODE_CBC);
case 'aes256-ctr':
case 'aes192-ctr':
case 'aes128-ctr':
return new Rijndael(Base::MODE_CTR);
case 'blowfish-cbc':
return new Blowfish();
return new Blowfish(Base::MODE_CBC);
case 'blowfish-ctr':
return new Blowfish(Base::MODE_CTR);
case 'twofish128-cbc':
case 'twofish192-cbc':
case 'twofish256-cbc':
case 'twofish-cbc':
return new Twofish();
return new Twofish(Base::MODE_CBC);
case 'twofish128-ctr':
case 'twofish192-ctr':
case 'twofish256-ctr':

2
tests/Unit/Crypt/AES/TestCase.php
View File

@ -388,7 +388,7 @@ abstract class Unit_Crypt_AES_TestCase extends PhpseclibTestCase
*/
public function testContinuousBuffer()
{
$aes = new AES();
$aes = new AES(AES::MODE_CBC);
$aes->disablePadding();
$aes->enableContinuousBuffer();
$aes->setIV(pack('H*', '0457bdb4a6712986688349a29eb82535'));