mirror of
https://github.com/danog/tgseclib.git
synced 2024-11-27 04:34:45 +01:00
Merge branch 'getkeylength' into getkeylength-2.0-2
Conflicts: phpseclib/Crypt/Blowfish.php phpseclib/Crypt/DES.php phpseclib/Crypt/RC2.php phpseclib/Crypt/RC4.php phpseclib/Crypt/Rijndael.php phpseclib/Crypt/TripleDES.php phpseclib/Crypt/Twofish.php
This commit is contained in:
commit
604dddc82b
@ -440,6 +440,24 @@ abstract class Base
|
||||
*/
|
||||
var $openssl_options;
|
||||
|
||||
/**
|
||||
* Has the key length explicitly been set or should it be derived from the key, itself?
|
||||
*
|
||||
* @see setKeyLength()
|
||||
* @var bool
|
||||
* @access private
|
||||
*/
|
||||
var $explicit_key_length = false;
|
||||
|
||||
/**
|
||||
* Don't truncate / null pad key
|
||||
*
|
||||
* @see Crypt_Base::_clearBuffers
|
||||
* @var bool
|
||||
* @access private
|
||||
*/
|
||||
var $skip_key_adjustment = false;
|
||||
|
||||
/**
|
||||
* Default Constructor.
|
||||
*
|
||||
@ -512,6 +530,32 @@ abstract class Base
|
||||
$this->changed = true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key length.
|
||||
*
|
||||
* Keys with explicitly set lengths need to be treated accordingly
|
||||
*
|
||||
* @access public
|
||||
* @param int $length
|
||||
*/
|
||||
function setKeyLength($length)
|
||||
{
|
||||
$this->explicit_key_length = true;
|
||||
$this->changed = true;
|
||||
$this->_setEngine();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the current key length
|
||||
*
|
||||
* @access public
|
||||
* @return int
|
||||
*/
|
||||
function getKeyLength()
|
||||
{
|
||||
return $this->key_size << 3;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key.
|
||||
*
|
||||
@ -528,6 +572,11 @@ abstract class Base
|
||||
*/
|
||||
function setKey($key)
|
||||
{
|
||||
if (!$this->explicit_key_length) {
|
||||
$this->setKeyLength(strlen($key) << 3);
|
||||
$this->explicit_key_length = false;
|
||||
}
|
||||
|
||||
$this->key = $key;
|
||||
$this->changed = true;
|
||||
$this->_setEngine();
|
||||
@ -571,7 +620,7 @@ abstract class Base
|
||||
if (isset($func_args[5])) {
|
||||
$dkLen = $func_args[5];
|
||||
} else {
|
||||
$dkLen = $method == 'pbkdf1' ? 2 * $this->password_key_size : $this->password_key_size;
|
||||
$dkLen = $method == 'pbkdf1' ? 2 * $this->key_size : $this->key_size;
|
||||
}
|
||||
|
||||
switch (true) {
|
||||
@ -1831,6 +1880,10 @@ abstract class Base
|
||||
// mcrypt's handling of invalid's $iv:
|
||||
// $this->encryptIV = $this->decryptIV = strlen($this->iv) == $this->block_size ? $this->iv : str_repeat("\0", $this->block_size);
|
||||
$this->encryptIV = $this->decryptIV = str_pad(substr($this->iv, 0, $this->block_size), $this->block_size, "\0");
|
||||
|
||||
if (!$this->skip_key_adjustment) {
|
||||
$this->key = str_pad(substr($this->key, 0, $this->key_size), $this->key_size, "\0");
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -58,16 +58,6 @@ class Blowfish extends Base
|
||||
*/
|
||||
var $block_size = 8;
|
||||
|
||||
/**
|
||||
* The default password key_size used by setPassword()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::password_key_size
|
||||
* @see \phpseclib\Crypt\Base::setPassword()
|
||||
* @var int
|
||||
* @access private
|
||||
*/
|
||||
var $password_key_size = 56;
|
||||
|
||||
/**
|
||||
* The mcrypt specific name of the cipher
|
||||
*
|
||||
@ -283,37 +273,43 @@ class Blowfish extends Base
|
||||
var $kl;
|
||||
|
||||
/**
|
||||
* Sets the key.
|
||||
* The Key Length
|
||||
*
|
||||
* Keys can be of any length. Blowfish, itself, requires the use of a key between 32 and max. 448-bits long.
|
||||
* If the key is less than 32-bits we NOT fill the key to 32bit but let the key as it is to be compatible
|
||||
* with mcrypt because mcrypt act this way with blowfish key's < 32 bits.
|
||||
* @see setKeyLength()
|
||||
* @var int
|
||||
* @access private
|
||||
* @internal The max value is 256 / 8 = 32, the min value is 128 / 8 = 16. Exists in conjunction with $Nk
|
||||
* because the encryption / decryption / key schedule creation requires this number and not $key_size. We could
|
||||
* derive this from $key_size or vice versa, but that'd mean we'd have to do multiple shift operations, so in lieu
|
||||
* of that, we'll just precompute it once.
|
||||
*/
|
||||
var $key_size = 16;
|
||||
|
||||
/**
|
||||
* Sets the key length.
|
||||
*
|
||||
* If the key is more than 448-bits, we trim the excess bits.
|
||||
*
|
||||
* If the key is not explicitly set, or empty, it'll be assumed a 128 bits key to be all null bytes.
|
||||
* Key lengths can be between 32 and 448 bits.
|
||||
*
|
||||
* @access public
|
||||
* @see \phpseclib\Crypt\Base::setKey()
|
||||
* @param string $key
|
||||
* @param int $length
|
||||
*/
|
||||
function setKey($key)
|
||||
function setKeyLength($length)
|
||||
{
|
||||
$keylength = strlen($key);
|
||||
|
||||
if (!$keylength) {
|
||||
$key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
|
||||
} elseif ($keylength > 56) {
|
||||
$key = substr($key, 0, 56);
|
||||
if ($length < 32) {
|
||||
$this->key_size = 7;
|
||||
} elseif ($length > 448) {
|
||||
$this->key_size = 56;
|
||||
} else {
|
||||
$this->key_size = $length >> 3;
|
||||
}
|
||||
|
||||
parent::setKey($key);
|
||||
parent::setKeyLength($length);
|
||||
}
|
||||
|
||||
/**
|
||||
* Test for engine validity
|
||||
*
|
||||
* This is mainly just a wrapper to set things up for Crypt_Base::isValidEngine()
|
||||
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::isValidEngine()
|
||||
* @param int $engine
|
||||
@ -323,7 +319,7 @@ class Blowfish extends Base
|
||||
function isValidEngine($engine)
|
||||
{
|
||||
if ($engine == self::ENGINE_OPENSSL) {
|
||||
if (strlen($this->key) != 16) {
|
||||
if ($this->key_size != 16) {
|
||||
return false;
|
||||
}
|
||||
$this->cipher_name_openssl_ecb = 'bf-ecb';
|
||||
|
@ -78,24 +78,13 @@ class DES extends Base
|
||||
var $block_size = 8;
|
||||
|
||||
/**
|
||||
* The Key
|
||||
* Key Length
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::key
|
||||
* @see setKey()
|
||||
* @var string
|
||||
* @access private
|
||||
*/
|
||||
var $key = "\0\0\0\0\0\0\0\0";
|
||||
|
||||
/**
|
||||
* The default password key_size used by setPassword()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::password_key_size
|
||||
* @see \phpseclib\Crypt\Base::setPassword()
|
||||
* @see \phpseclib\Crypt\Base::setKeyLength()
|
||||
* @var int
|
||||
* @access private
|
||||
*/
|
||||
var $password_key_size = 8;
|
||||
var $key_size = 8;
|
||||
|
||||
/**
|
||||
* The mcrypt specific name of the cipher
|
||||
@ -594,7 +583,7 @@ class DES extends Base
|
||||
/**
|
||||
* Test for engine validity
|
||||
*
|
||||
* This is mainly just a wrapper to set things up for Crypt_Base::isValidEngine()
|
||||
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::isValidEngine()
|
||||
* @param int $engine
|
||||
|
@ -77,14 +77,22 @@ class RC2 extends Base
|
||||
var $orig_key;
|
||||
|
||||
/**
|
||||
* The default password key_size used by setPassword()
|
||||
* Don't truncate / null pad key
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::password_key_size
|
||||
* @see \phpseclib\Crypt\Base::setPassword()
|
||||
* @see \phpseclib\Crypt\Base::_clearBuffers
|
||||
* @var bool
|
||||
* @access private
|
||||
*/
|
||||
var $skip_key_adjustment = true;
|
||||
|
||||
/**
|
||||
* Key Length
|
||||
*
|
||||
* @see \phpseclib\Crypt\RC2::setKeyLength()
|
||||
* @var int
|
||||
* @access private
|
||||
*/
|
||||
var $password_key_size = 16; // = 128 bits
|
||||
var $key_size = 16; // = 128 bits
|
||||
|
||||
/**
|
||||
* The mcrypt specific name of the cipher
|
||||
@ -256,9 +264,9 @@ class RC2 extends Base
|
||||
/**
|
||||
* Test for engine validity
|
||||
*
|
||||
* This is mainly just a wrapper to set things up for Crypt_Base::isValidEngine()
|
||||
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::Crypt_Base()
|
||||
* @see \phpseclib\Crypt\Base::__construct()
|
||||
* @param int $engine
|
||||
* @access public
|
||||
* @return bool
|
||||
@ -267,7 +275,7 @@ class RC2 extends Base
|
||||
{
|
||||
switch ($engine) {
|
||||
case self::ENGINE_OPENSSL:
|
||||
if ($this->current_key_length != 128 || strlen($this->orig_key) != 16) {
|
||||
if ($this->current_key_length != 128 || strlen($this->orig_key) < 16) {
|
||||
return false;
|
||||
}
|
||||
$this->cipher_name_openssl_ecb = 'rc2-ecb';
|
||||
@ -278,7 +286,7 @@ class RC2 extends Base
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key length
|
||||
* Sets the key length.
|
||||
*
|
||||
* Valid key lengths are 1 to 1024.
|
||||
* Calling this function after setting the key has no effect until the next
|
||||
@ -294,6 +302,17 @@ class RC2 extends Base
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the current key length
|
||||
*
|
||||
* @access public
|
||||
* @return int
|
||||
*/
|
||||
function getKeyLength()
|
||||
{
|
||||
return $this->current_key_length;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key.
|
||||
*
|
||||
@ -349,13 +368,14 @@ class RC2 extends Base
|
||||
// Prepare the key for mcrypt.
|
||||
$l[0] = $this->invpitable[$l[0]];
|
||||
array_unshift($l, 'C*');
|
||||
|
||||
parent::setKey(call_user_func_array('pack', $l));
|
||||
}
|
||||
|
||||
/**
|
||||
* Encrypts a message.
|
||||
*
|
||||
* Mostly a wrapper for Crypt_Base::encrypt, with some additional OpenSSL handling code
|
||||
* Mostly a wrapper for \phpseclib\Crypt\Base::encrypt, with some additional OpenSSL handling code
|
||||
*
|
||||
* @see decrypt()
|
||||
* @access public
|
||||
@ -378,7 +398,7 @@ class RC2 extends Base
|
||||
/**
|
||||
* Decrypts a message.
|
||||
*
|
||||
* Mostly a wrapper for Crypt_Base::decrypt, with some additional OpenSSL handling code
|
||||
* Mostly a wrapper for \phpseclib\Crypt\Base::decrypt, with some additional OpenSSL handling code
|
||||
*
|
||||
* @see encrypt()
|
||||
* @access public
|
||||
|
@ -76,14 +76,13 @@ class RC4 extends Base
|
||||
var $block_size = 0;
|
||||
|
||||
/**
|
||||
* The default password key_size used by setPassword()
|
||||
* Key Length
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::password_key_size
|
||||
* @see \phpseclib\Crypt\Base::setPassword()
|
||||
* @see \phpseclib\Crypt\RC4::setKeyLength()
|
||||
* @var int
|
||||
* @access private
|
||||
*/
|
||||
var $password_key_size = 128; // = 1024 bits
|
||||
var $key_size = 128; // = 1024 bits
|
||||
|
||||
/**
|
||||
* The mcrypt specific name of the cipher
|
||||
@ -138,9 +137,9 @@ class RC4 extends Base
|
||||
/**
|
||||
* Test for engine validity
|
||||
*
|
||||
* This is mainly just a wrapper to set things up for Crypt_Base::isValidEngine()
|
||||
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
|
||||
*
|
||||
* @see Crypt_Base::Crypt_Base()
|
||||
* @see \phpseclib\Crypt\Base::__construct()
|
||||
* @param int $engine
|
||||
* @access public
|
||||
* @return bool
|
||||
@ -191,18 +190,24 @@ class RC4 extends Base
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key.
|
||||
* Sets the key length
|
||||
*
|
||||
* Keys can be between 1 and 256 bytes long. If they are longer then 256 bytes, the first 256 bytes will
|
||||
* be used. If no key is explicitly set, it'll be assumed to be a single null byte.
|
||||
* Keys can be between 1 and 256 bytes long.
|
||||
*
|
||||
* @access public
|
||||
* @see \phpseclib\Crypt\Base::setKey()
|
||||
* @param string $key
|
||||
* @param int $length
|
||||
*/
|
||||
function setKey($key)
|
||||
function setKeyLength($length)
|
||||
{
|
||||
parent::setKey(substr($key, 0, 256));
|
||||
if ($length < 8) {
|
||||
$this->key_size = 1;
|
||||
} elseif ($length > 2048) {
|
||||
$this->key_size = 248;
|
||||
} else {
|
||||
$this->key_size = $length >> 3;
|
||||
}
|
||||
|
||||
parent::setKeyLength($length);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -65,16 +65,6 @@ use phpseclib\Crypt\Base;
|
||||
*/
|
||||
class Rijndael extends Base
|
||||
{
|
||||
/**
|
||||
* The default password key_size used by setPassword()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::password_key_size
|
||||
* @see \phpseclib\Crypt\Base::setPassword()
|
||||
* @var int
|
||||
* @access private
|
||||
*/
|
||||
var $password_key_size = 16;
|
||||
|
||||
/**
|
||||
* The mcrypt specific name of the cipher
|
||||
*
|
||||
@ -101,15 +91,6 @@ class Rijndael extends Base
|
||||
*/
|
||||
var $password_default_salt = 'phpseclib';
|
||||
|
||||
/**
|
||||
* Has the key length explicitly been set or should it be derived from the key, itself?
|
||||
*
|
||||
* @see setKeyLength()
|
||||
* @var bool
|
||||
* @access private
|
||||
*/
|
||||
var $explicit_key_length = false;
|
||||
|
||||
/**
|
||||
* The Key Schedule
|
||||
*
|
||||
@ -190,48 +171,7 @@ class Rijndael extends Base
|
||||
var $kl;
|
||||
|
||||
/**
|
||||
* Sets the key.
|
||||
*
|
||||
* Keys can be of any length. Rijndael, itself, requires the use of a key that's between 128-bits and 256-bits long and
|
||||
* whose length is a multiple of 32. If the key is less than 256-bits and the key length isn't set, we round the length
|
||||
* up to the closest valid key length, padding $key with null bytes. If the key is more than 256-bits, we trim the
|
||||
* excess bits.
|
||||
*
|
||||
* If the key is not explicitly set, it'll be assumed to be all null bytes.
|
||||
*
|
||||
* Note: 160/224-bit keys must explicitly set by setKeyLength(), otherwise they will be round/pad up to 192/256 bits.
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base:setKey()
|
||||
* @see setKeyLength()
|
||||
* @access public
|
||||
* @param string $key
|
||||
*/
|
||||
function setKey($key)
|
||||
{
|
||||
if (!$this->explicit_key_length) {
|
||||
$length = strlen($key);
|
||||
switch (true) {
|
||||
case $length <= 16:
|
||||
$this->key_size = 16;
|
||||
break;
|
||||
case $length <= 20:
|
||||
$this->key_size = 20;
|
||||
break;
|
||||
case $length <= 24:
|
||||
$this->key_size = 24;
|
||||
break;
|
||||
case $length <= 28:
|
||||
$this->key_size = 28;
|
||||
break;
|
||||
default:
|
||||
$this->key_size = 32;
|
||||
}
|
||||
}
|
||||
parent::setKey($key);
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key length
|
||||
* Sets the key length.
|
||||
*
|
||||
* Valid key lengths are 128, 160, 192, 224, and 256. If the length is less than 128, it will be rounded up to
|
||||
* 128. If the length is greater than 128 and invalid, it will be rounded down to the closest valid amount.
|
||||
@ -253,25 +193,23 @@ class Rijndael extends Base
|
||||
function setKeyLength($length)
|
||||
{
|
||||
switch (true) {
|
||||
case $length == 160:
|
||||
$this->key_size = 20;
|
||||
break;
|
||||
case $length == 224:
|
||||
$this->key_size = 28;
|
||||
break;
|
||||
case $length <= 128:
|
||||
$this->key_size = 16;
|
||||
break;
|
||||
case $length <= 160:
|
||||
$this->key_size = 20;
|
||||
break;
|
||||
case $length <= 192:
|
||||
$this->key_size = 24;
|
||||
break;
|
||||
case $length <= 224:
|
||||
$this->key_size = 28;
|
||||
break;
|
||||
default:
|
||||
$this->key_size = 32;
|
||||
}
|
||||
|
||||
$this->explicit_key_length = true;
|
||||
$this->changed = true;
|
||||
$this->_setEngine();
|
||||
parent::setKeyLength($length);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -302,7 +240,7 @@ class Rijndael extends Base
|
||||
*
|
||||
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::Crypt_Base()
|
||||
* @see \phpseclib\Crypt\Base::__construct()
|
||||
* @param int $engine
|
||||
* @access public
|
||||
* @return bool
|
||||
@ -328,18 +266,6 @@ class Rijndael extends Base
|
||||
return parent::isValidEngine($engine);
|
||||
}
|
||||
|
||||
/**
|
||||
* Setup the \phpseclib\Crypt\Base::ENGINE_MCRYPT $engine
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::_setupMcrypt()
|
||||
* @access private
|
||||
*/
|
||||
function _setupMcrypt()
|
||||
{
|
||||
$this->key = str_pad(substr($this->key, 0, $this->key_size), $this->key_size, "\0");
|
||||
parent::_setupMcrypt();
|
||||
}
|
||||
|
||||
/**
|
||||
* Encrypts a block
|
||||
*
|
||||
@ -550,8 +476,6 @@ class Rijndael extends Base
|
||||
0x7D000000, 0xFA000000, 0xEF000000, 0xC5000000, 0x91000000
|
||||
);
|
||||
|
||||
$this->key = str_pad(substr($this->key, 0, $this->key_size), $this->key_size, "\0");
|
||||
|
||||
if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->key_size === $this->kl['key_size'] && $this->block_size === $this->kl['block_size']) {
|
||||
// already expanded
|
||||
return;
|
||||
@ -668,9 +592,9 @@ class Rijndael extends Base
|
||||
/**
|
||||
* Provides the mixColumns and sboxes tables
|
||||
*
|
||||
* @see Crypt_Rijndael:_encryptBlock()
|
||||
* @see Crypt_Rijndael:_setupInlineCrypt()
|
||||
* @see Crypt_Rijndael:_subWord()
|
||||
* @see \phpseclib\Crypt\Rijndael:_encryptBlock()
|
||||
* @see \phpseclib\Crypt\Rijndael:_setupInlineCrypt()
|
||||
* @see \phpseclib\Crypt\Rijndael:_subWord()
|
||||
* @access private
|
||||
* @return array &$tables
|
||||
*/
|
||||
@ -757,9 +681,9 @@ class Rijndael extends Base
|
||||
/**
|
||||
* Provides the inverse mixColumns and inverse sboxes tables
|
||||
*
|
||||
* @see Crypt_Rijndael:_decryptBlock()
|
||||
* @see Crypt_Rijndael:_setupInlineCrypt()
|
||||
* @see Crypt_Rijndael:_setupKey()
|
||||
* @see \phpseclib\Crypt\Rijndael:_decryptBlock()
|
||||
* @see \phpseclib\Crypt\Rijndael:_setupInlineCrypt()
|
||||
* @see \phpseclib\Crypt\Rijndael:_setupKey()
|
||||
* @access private
|
||||
* @return array &$tables
|
||||
*/
|
||||
|
@ -64,15 +64,13 @@ class TripleDES extends DES
|
||||
const MODE_CBC3 = Base::MODE_CBC;
|
||||
|
||||
/**
|
||||
* The default password key_size used by setPassword()
|
||||
* Key Length
|
||||
*
|
||||
* @see \phpseclib\Crypt\DES::password_key_size
|
||||
* @see \phpseclib\Crypt\Base::password_key_size
|
||||
* @see \phpseclib\Crypt\Base::setPassword()
|
||||
* @see \phpseclib\Crypt\TripleDES::setKeyLength()
|
||||
* @var int
|
||||
* @access private
|
||||
*/
|
||||
var $password_key_size = 24;
|
||||
var $key_size = 24;
|
||||
|
||||
/**
|
||||
* The default salt used by setPassword()
|
||||
@ -189,7 +187,7 @@ class TripleDES extends DES
|
||||
*
|
||||
* This is mainly just a wrapper to set things up for \phpseclib\Crypt\Base::isValidEngine()
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::Crypt_Base()
|
||||
* @see \phpseclib\Crypt\Base::__construct()
|
||||
* @param int $engine
|
||||
* @access public
|
||||
* @return bool
|
||||
@ -225,6 +223,32 @@ class TripleDES extends DES
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key length.
|
||||
*
|
||||
* Valid key lengths are 64, 128 and 192
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base:setKeyLength()
|
||||
* @access public
|
||||
* @param int $length
|
||||
*/
|
||||
function setKeyLength($length)
|
||||
{
|
||||
$length >>= 3;
|
||||
switch (true) {
|
||||
case $length <= 8:
|
||||
$this->key_size = 8;
|
||||
break;
|
||||
case $length <= 16:
|
||||
$this->key_size = 16;
|
||||
break;
|
||||
default:
|
||||
$this->key_size = 24;
|
||||
}
|
||||
|
||||
parent::setKeyLength($length);
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the key.
|
||||
*
|
||||
@ -242,7 +266,7 @@ class TripleDES extends DES
|
||||
*/
|
||||
function setKey($key)
|
||||
{
|
||||
$length = strlen($key);
|
||||
$length = $this->explicit_key_length ? $this->key_size : strlen($key);
|
||||
if ($length > 8) {
|
||||
$key = str_pad(substr($key, 0, 24), 24, chr(0));
|
||||
// if $key is between 64 and 128-bits, use the first 64-bits as the last, per this:
|
||||
@ -421,7 +445,7 @@ class TripleDES extends DES
|
||||
/**
|
||||
* Sets the internal crypt engine
|
||||
*
|
||||
* @see \phpseclib\Crypt\Base::Crypt_Base()
|
||||
* @see \phpseclib\Crypt\Base::__construct()
|
||||
* @see \phpseclib\Crypt\Base::setPreferredEngine()
|
||||
* @param int $engine
|
||||
* @access public
|
||||
|
@ -362,35 +362,27 @@ class Twofish extends Base
|
||||
var $kl;
|
||||
|
||||
/**
|
||||
* Sets the key.
|
||||
* Sets the key length.
|
||||
*
|
||||
* Keys can be of any length. Twofish, itself, requires the use of a key that's 128, 192 or 256-bits long.
|
||||
* If the key is less than 256-bits we round the length up to the closest valid key length,
|
||||
* padding $key with null bytes. If the key is more than 256-bits, we trim the excess bits.
|
||||
*
|
||||
* If the key is not explicitly set, it'll be assumed a 128 bits key to be all null bytes.
|
||||
* Valid key lengths are 128, 192 or 256 bits
|
||||
*
|
||||
* @access public
|
||||
* @see \phpseclib\Crypt\Base::setKey()
|
||||
* @param string $key
|
||||
* @param int $length
|
||||
*/
|
||||
function setKey($key)
|
||||
function setKeyLength($length)
|
||||
{
|
||||
$keylength = strlen($key);
|
||||
switch (true) {
|
||||
case $keylength <= 16:
|
||||
$key = str_pad($key, 16, "\0");
|
||||
case $length <= 128:
|
||||
$this->key_size = 16;
|
||||
break;
|
||||
case $keylength <= 24:
|
||||
$key = str_pad($key, 24, "\0");
|
||||
case $length <= 192:
|
||||
$this->key_size = 24;
|
||||
break;
|
||||
case $keylength < 32:
|
||||
$key = str_pad($key, 32, "\0");
|
||||
break;
|
||||
case $keylength > 32:
|
||||
$key = substr($key, 0, 32);
|
||||
default:
|
||||
$this->key_size = 32;
|
||||
}
|
||||
parent::setKey($key);
|
||||
|
||||
parent::setKeyLength($length);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -336,4 +336,39 @@ abstract class Unit_Crypt_AES_TestCase extends PhpseclibTestCase
|
||||
$result = bin2hex($aes->encrypt(pack('H*', '91fbef2d15a97816060bee1feaa49afe')));
|
||||
$this->assertSame($result, '1bc704f1bce135ceb810341b216d7abe');
|
||||
}
|
||||
|
||||
public function testGetKeyLengthDefault()
|
||||
{
|
||||
$aes = new AES();
|
||||
$this->assertSame($aes->getKeyLength(), 128);
|
||||
}
|
||||
|
||||
public function testGetKeyLengthWith192BitKey()
|
||||
{
|
||||
$aes = new AES();
|
||||
$aes->setKey(str_repeat('a', 24));
|
||||
$this->assertSame($aes->getKeyLength(), 192);
|
||||
}
|
||||
|
||||
public function testSetKeyLengthWithLargerKey()
|
||||
{
|
||||
$aes = new AES();
|
||||
$aes->setKeyLength(128);
|
||||
$aes->setKey(str_repeat('a', 24));
|
||||
$this->assertSame($aes->getKeyLength(), 128);
|
||||
$ciphertext = bin2hex($aes->encrypt('a'));
|
||||
$this->assertSame($ciphertext, '82b7b068dfc60ed2a46893b69fecd6c2');
|
||||
$this->assertSame($aes->getKeyLength(), 128);
|
||||
}
|
||||
|
||||
public function testSetKeyLengthWithSmallerKey()
|
||||
{
|
||||
$aes = new AES();
|
||||
$aes->setKeyLength(256);
|
||||
$aes->setKey(str_repeat('a', 16));
|
||||
$this->assertSame($aes->getKeyLength(), 256);
|
||||
$ciphertext = bin2hex($aes->encrypt('a'));
|
||||
$this->assertSame($ciphertext, 'fd4250c0d234aa7e1aa592820aa8406b');
|
||||
$this->assertSame($aes->getKeyLength(), 256);
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user