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AES: first attempt at unit tests for key padding
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<?php
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/**
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* @author Andreas Fischer <bantu@phpbb.com>
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* @copyright MMXIII Andreas Fischer
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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*/
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class Unit_Crypt_AES_ContinuousBufferTest extends Unit_Crypt_AES_TestCase
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{
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// String intented
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protected $modes = array(
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'CRYPT_AES_MODE_CTR',
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'CRYPT_AES_MODE_OFB',
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'CRYPT_AES_MODE_CFB',
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);
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protected $plaintexts = array(
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'',
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'12345678901234567', // https://github.com/phpseclib/phpseclib/issues/39
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"\xDE\xAD\xBE\xAF",
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':-):-):-):-):-):-)', // https://github.com/phpseclib/phpseclib/pull/43
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);
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protected $ivs = array(
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'',
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'test123',
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);
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protected $keys = array(
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'',
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':-8', // https://github.com/phpseclib/phpseclib/pull/43
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'FOOBARZ',
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);
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/**
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* Produces all combinations of test values.
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*
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* @return array
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*/
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public function allCombinations()
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{
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$result = array();
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// @codingStandardsIgnoreStart
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foreach ($this->modes as $mode)
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foreach ($this->plaintexts as $plaintext)
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foreach ($this->ivs as $iv)
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foreach ($this->keys as $key)
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$result[] = array($mode, $plaintext, $iv, $key);
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// @codingStandardsIgnoreEnd
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return $result;
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}
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/**
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* @dataProvider allCombinations
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*/
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public function testEncryptDecrypt($mode, $plaintext, $iv, $key)
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{
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$aes = new Crypt_AES(constant($mode));
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$aes->enableContinuousBuffer();
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$aes->setIV($iv);
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$aes->setKey($key);
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$actual = '';
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for ($i = 0, $strlen = strlen($plaintext); $i < $strlen; ++$i) {
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$actual .= $aes->decrypt($aes->encrypt($plaintext[$i]));
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}
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$this->assertEquals($plaintext, $actual);
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}
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}
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16
tests/Unit/Crypt/AES/InternalTest.php
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16
tests/Unit/Crypt/AES/InternalTest.php
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<?php
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/**
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* @author Andreas Fischer <bantu@phpbb.com>
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* @copyright MMXIII Andreas Fischer
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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*/
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class Unit_Crypt_AES_InternalTest extends Unit_Crypt_AES_TestCase
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{
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static public function setUpBeforeClass()
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{
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parent::setUpBeforeClass();
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self::ensureConstant('CRYPT_AES_MODE', CRYPT_AES_MODE_INTERNAL);
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}
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}
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@ -5,23 +5,95 @@
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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*/
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require_once 'Crypt/AES.php';
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abstract class Unit_Crypt_AES_TestCase extends PhpseclibTestCase
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abstract class Unit_Crypt_AES_Test extends PhpSeclibTestcase
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{
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static public function setUpBeforeClass()
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{
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if (!defined('CRYPT_AES_MODE')) {
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define('CRYPT_AES_MODE', CRYPT_AES_MODE_INTERNAL);
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}
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parent::setUpBeforeClass();
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self::reRequireFile('Crypt/Rijndael.php');
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self::reRequireFile('Crypt/AES.php');
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}
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public function setUp()
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/**
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* Produces all combinations of test values.
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*
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* @return array
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*/
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public function continuousBufferCombos()
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{
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if (defined('CRYPT_AES_MODE') && CRYPT_AES_MODE !== CRYPT_AES_MODE_INTERNAL) {
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$this->markTestSkipped(
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'Skipping test because CRYPT_AES_MODE is not defined as CRYPT_AES_MODE_INTERNAL.'
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$modes = array(
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'CRYPT_AES_MODE_CTR',
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'CRYPT_AES_MODE_OFB',
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'CRYPT_AES_MODE_CFB',
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);
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}
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$plaintexts = array(
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'',
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'12345678901234567', // https://github.com/phpseclib/phpseclib/issues/39
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"\xDE\xAD\xBE\xAF",
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':-):-):-):-):-):-)', // https://github.com/phpseclib/phpseclib/pull/43
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);
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$ivs = array(
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'',
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'test123',
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);
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$keys = array(
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'',
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':-8', // https://github.com/phpseclib/phpseclib/pull/43
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'FOOBARZ',
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);
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$result = array();
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// @codingStandardsIgnoreStart
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foreach ($this->modes as $mode)
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foreach ($this->plaintexts as $plaintext)
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foreach ($this->ivs as $iv)
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foreach ($this->keys as $key)
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$result[] = array($mode, $plaintext, $iv, $key);
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// @codingStandardsIgnoreEnd
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return $result;
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}
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/**
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* @dataProvider continuousBufferCombos
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*/
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public function testEncryptDecryptWithContinuousBuffer($mode, $plaintext, $iv, $key)
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{
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$aes = new Crypt_AES(constant($mode));
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$aes->enableContinuousBuffer();
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$aes->setIV($iv);
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$aes->setKey($key);
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$actual = '';
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for ($i = 0, $strlen = strlen($plaintext); $i < $strlen; ++$i) {
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$actual .= $aes->decrypt($aes->encrypt($plaintext[$i]));
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}
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$this->assertEquals($plaintext, $actual);
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}
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public function testKeyPaddingRijndael()
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{
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// this test case is from the following URL:
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// https://web.archive.org/web/20070209120224/http://fp.gladman.plus.com/cryptography_technology/rijndael/aesdvec.zip
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$aes = new Crypt_Rijndael();
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$aes->disablePadding();
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$aes->setKey(pack('H*', '2b7e151628aed2a6abf7158809cf4f3c762e7160')); // 160-bit key. Valid in Rijndael.
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$ciphertext = $aes->encrypt(pack('H*', '3243f6a8885a308d313198a2e0370734'));
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$this->assertEquals($ciphertext, pack('H*', '231d844639b31b412211cfe93712b880'));
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}
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public function testKeyPaddingAES()
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{
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// same as the above - just with a different ciphertext
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$aes = new Crypt_AES();
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$aes->disablePadding();
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$aes->setKey(pack('H*', '2b7e151628aed2a6abf7158809cf4f3c762e7160')); // 160-bit key. AES should null pad to 192-bits
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$ciphertext = $aes->encrypt(pack('H*', '3243f6a8885a308d313198a2e0370734'));
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$this->assertEquals($ciphertext, pack('H*', 'c109292b173f841b88e0ee49f13db8c0'));
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}
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}
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16
tests/Unit/Crypt/AES/mcryptTest.php
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16
tests/Unit/Crypt/AES/mcryptTest.php
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<?php
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/**
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* @author Andreas Fischer <bantu@phpbb.com>
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* @copyright MMXIII Andreas Fischer
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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*/
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class Unit_Crypt_AES_mcryptTest extends Unit_Crypt_AES_mcryptCase
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{
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static public function setUpBeforeClass()
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{
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parent::setUpBeforeClass();
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self::ensureConstant('CRYPT_AES_MODE', CRYPT_AES_MODE_MCRYPT);
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}
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}
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