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Merge branch '2.0'

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This commit is contained in:
terrafrost 2015-10-12 23:10:15 -05:00
commit 177b52088d
10 changed files with 267 additions and 218 deletions
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6
phpseclib/Crypt/AES.php
View File

@ -114,13 +114,13 @@ class AES extends Rijndael
$length = strlen($key);
switch (true) {
case $length <= 16:
$this->key_size = 16;
$this->key_length = 16;
break;
case $length <= 24:
$this->key_size = 24;
$this->key_length = 24;
break;
default:
$this->key_size = 32;
$this->key_length = 32;
}
$this->_setEngine();
}

75
phpseclib/Crypt/Base.php
View File

@ -378,15 +378,6 @@ abstract class Base
*/
var $cipher_name_openssl_ecb;
/**
* The default password key_size used by setPassword()
*
* @see \phpseclib\Crypt\Base::setPassword()
* @var int
* @access private
*/
var $password_key_size = 32;
/**
* The default salt used by setPassword()
*
@ -440,6 +431,24 @@ abstract class Base
*/
var $openssl_options;
/**
* Has the key length explicitly been set or should it be derived from the key, itself?
*
* @see self::setKeyLength()
* @var bool
* @access private
*/
var $explicit_key_length = false;
/**
* Don't truncate / null pad key
*
* @see self::_clearBuffers()
* @var bool
* @access private
*/
var $skip_key_adjustment = false;
/**
* Default Constructor.
*
@ -512,6 +521,43 @@ 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 in bits
*
* @access public
* @return int
*/
function getKeyLength()
{
return $this->key_length << 3;
}
/**
* Returns the current block length in bits
*
* @access public
* @return int
*/
function getBlockLength()
{
return $this->block_size << 3;
}
/**
* Sets the key.
*
@ -528,6 +574,11 @@ abstract class Base
*/
function setKey($key)
{
if (!$this->explicit_key_length) {
$this->setKeyLength(strlen($key) << 3);
$this->explicit_key_length = false;
}
$this->key = $key;
$this->changed = true;
$this->_setEngine();
@ -572,7 +623,7 @@ abstract class Base
if (isset($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_length : $this->key_length;
}
switch (true) {
@ -1832,6 +1883,10 @@ 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_length), $this->key_length, "\0");
}
}
/**

54
phpseclib/Crypt/Blowfish.php
View File

@ -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 (in bytes)
*
* 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 \phpseclib\Crypt\Base::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_length. We could
* derive this from $key_length 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_length = 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) {
$this->key_length = 7;
} elseif ($length > 448) {
$this->key_length = 56;
} else {
$this->key_length = $length >> 3;
}
parent::setKey($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_length != 16) {
return false;
}
$this->cipher_name_openssl_ecb = 'bf-ecb';

27
phpseclib/Crypt/DES.php
View File

@ -78,24 +78,13 @@ class DES extends Base
var $block_size = 8;
/**
* The Key
* Key Length (in bytes)
*
* @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_length = 8;
/**
* The mcrypt specific name of the cipher
@ -149,7 +138,7 @@ class DES extends Base
* @var string
* @access private
*/
var $key_size_max = 8;
var $key_length_max = 8;
/**
* The Key Schedule
@ -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 $engine
@ -603,7 +592,7 @@ class DES extends Base
*/
function isValidEngine($engine)
{
if ($this->key_size_max == 8) {
if ($this->key_length_max == 8) {
if ($engine == self::ENGINE_OPENSSL) {
$this->cipher_name_openssl_ecb = 'des-ecb';
$this->cipher_name_openssl = 'des-' . $this->_openssl_translate_mode();
@ -632,8 +621,8 @@ class DES extends Base
{
// We check/cut here only up to max length of the key.
// Key padding to the proper length will be done in _setupKey()
if (strlen($key) > $this->key_size_max) {
$key = substr($key, 0, $this->key_size_max);
if (strlen($key) > $this->key_length_max) {
$key = substr($key, 0, $this->key_length_max);
}
// Sets the key

40
phpseclib/Crypt/RC2.php
View File

@ -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 (in bytes)
*
* @see \phpseclib\Crypt\RC2::setKeyLength()
* @var int
* @access private
*/
var $password_key_size = 16; // = 128 bits
var $key_length = 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

31
phpseclib/Crypt/RC4.php
View File

@ -76,14 +76,13 @@ class RC4 extends Base
var $block_size = 0;
/**
* The default password key_size used by setPassword()
* Key Length (in bytes)
*
* @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_length = 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) {
$this->key_length = 1;
} elseif ($length > 2048) {
$this->key_length = 248;
} else {
$this->key_length = $length >> 3;
}
parent::setKeyLength($length);
}
/**

136
phpseclib/Crypt/Rijndael.php
View File

@ -65,22 +65,12 @@ 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
*
* Mcrypt is useable for 128/192/256-bit $block_size/$key_size. For 160/224 not.
* Mcrypt is useable for 128/192/256-bit $block_size/$key_length. For 160/224 not.
* \phpseclib\Crypt\Rijndael determines automatically whether mcrypt is useable
* or not for the current $block_size/$key_size.
* or not for the current $block_size/$key_length.
* In case of, $cipher_name_mcrypt will be set dynamically at run time accordingly.
*
* @see \phpseclib\Crypt\Base::cipher_name_mcrypt
@ -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
*
@ -142,17 +123,17 @@ class Rijndael extends Base
var $Nb = 4;
/**
* The Key Length
* The Key Length (in bytes)
*
* @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
* because the encryption / decryption / key schedule creation requires this number and not $key_length. We could
* derive this from $key_length 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;
var $key_length = 16;
/**
* The Key Length divided by 32
@ -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;
$this->key_length = 16;
break;
case $length <= 160:
$this->key_length = 20;
break;
case $length <= 192:
$this->key_size = 24;
$this->key_length = 24;
break;
case $length <= 224:
$this->key_length = 28;
break;
default:
$this->key_size = 32;
$this->key_length = 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 $engine
* @access public
* @return bool
@ -314,12 +252,12 @@ class Rijndael extends Base
if ($this->block_size != 16) {
return false;
}
$this->cipher_name_openssl_ecb = 'aes-' . ($this->key_size << 3) . '-ecb';
$this->cipher_name_openssl = 'aes-' . ($this->key_size << 3) . '-' . $this->_openssl_translate_mode();
$this->cipher_name_openssl_ecb = 'aes-' . ($this->key_length << 3) . '-ecb';
$this->cipher_name_openssl = 'aes-' . ($this->key_length << 3) . '-' . $this->_openssl_translate_mode();
break;
case self::ENGINE_MCRYPT:
$this->cipher_name_mcrypt = 'rijndael-' . ($this->block_size << 3);
if ($this->key_size % 8) { // is it a 160/224-bit key?
if ($this->key_length % 8) { // is it a 160/224-bit key?
// mcrypt is not usable for them, only for 128/192/256-bit keys
return false;
}
@ -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
*
@ -550,15 +476,13 @@ 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 === $this->kl['block_size']) {
if (isset($this->kl['key']) && $this->key === $this->kl['key'] && $this->key_length === $this->kl['key_length'] && $this->block_size === $this->kl['block_size']) {
// already expanded
return;
}
$this->kl = array('key' => $this->key, 'key_size' => $this->key_size, 'block_size' => $this->block_size);
$this->kl = array('key' => $this->key, 'key_length' => $this->key_length, 'block_size' => $this->block_size);
$this->Nk = $this->key_size >> 2;
$this->Nk = $this->key_length >> 2;
// see Rijndael-ammended.pdf#page=44
$this->Nr = max($this->Nk, $this->Nb) + 6;
@ -668,9 +592,9 @@ class Rijndael extends Base
/**
* Provides the mixColumns and sboxes tables
*
* @see Crypt_Rijndael:_encryptBlock()
* @see Crypt_Rijndael:_setupInlineCrypt()
* @see Crypt_Rijndael:_subWord()
* @see \phpseclib\Crypt\Rijndael:_encryptBlock()
* @see \phpseclib\Crypt\Rijndael:_setupInlineCrypt()
* @see \phpseclib\Crypt\Rijndael:_subWord()
* @access private
* @return array &$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
*/

42
phpseclib/Crypt/TripleDES.php
View File

@ -64,15 +64,13 @@ class TripleDES extends DES
const MODE_CBC3 = Base::MODE_CBC;
/**
* The default password key_size used by setPassword()
* Key Length (in bytes)
*
* @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_length = 24;
/**
* The default salt used by setPassword()
@ -111,7 +109,7 @@ class TripleDES extends DES
* @var string
* @access private
*/
var $key_size_max = 24;
var $key_length_max = 24;
/**
* Internal flag whether using self::MODE_3CBC or not
@ -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_length = 8;
break;
case $length <= 16:
$this->key_length = 16;
break;
default:
$this->key_length = 24;
}
parent::setKeyLength($length);
}
/**
* Sets the key.
*
@ -242,7 +266,7 @@ class TripleDES extends DES
*/
function setKey($key)
{
$length = strlen($key);
$length = $this->explicit_key_length ? $this->key_length : strlen($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

39
phpseclib/Crypt/Twofish.php
View File

@ -362,35 +362,36 @@ class Twofish extends Base
var $kl;
/**
* Sets the key.
* The Key Length (in bytes)
*
* 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.
* @see Crypt_Twofish::setKeyLength()
* @var int
* @access private
*/
var $key_length = 16;
/**
* Sets the key length.
*
* 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_length = 16;
break;
case $keylength <= 24:
$key = str_pad($key, 24, "\0");
case $length <= 192:
$this->key_length = 24;
break;
case $keylength < 32:
$key = str_pad($key, 32, "\0");
break;
case $keylength > 32:
$key = substr($key, 0, 32);
default:
$this->key_length = 32;
}
parent::setKey($key);
parent::setKeyLength($length);
}
/**

35
tests/Unit/Crypt/AES/TestCase.php
View File

@ -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);
}
}