800 lines
36 KiB
PHP
800 lines
36 KiB
PHP
<?php
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/**
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* Pure-PHP implementation of ChaCha20.
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*
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* PHP version 5
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*
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2019 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://phpseclib.sourceforge.net
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*/
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namespace phpseclib3\Crypt;
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use phpseclib3\Exception\BadDecryptionException;
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use phpseclib3\Exception\InsufficientSetupException;
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/**
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* Pure-PHP implementation of ChaCha20.
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*
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* @author Jim Wigginton <terrafrost@php.net>
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*/
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class ChaCha20 extends Salsa20
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{
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/**
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* The OpenSSL specific name of the cipher
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*
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* @var string
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*/
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protected $cipher_name_openssl = 'chacha20';
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/**
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* Test for engine validity
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*
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* This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
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*
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* @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
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* @param int $engine
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* @return bool
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*/
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protected function isValidEngineHelper($engine)
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{
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switch ($engine) {
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case self::ENGINE_LIBSODIUM:
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// PHP 7.2.0 (30 Nov 2017) added support for libsodium
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// we could probably make it so that if $this->counter == 0 then the first block would be done with either OpenSSL
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// or PHP and then subsequent blocks would then be done with libsodium but idk - it's not a high priority atm
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// we could also make it so that if $this->counter == 0 and $this->continuousBuffer then do the first string
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// with libsodium and subsequent strings with openssl or pure-PHP but again not a high priority
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return function_exists('sodium_crypto_aead_chacha20poly1305_ietf_encrypt') &&
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$this->key_length == 32 &&
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(($this->usePoly1305 && !isset($this->poly1305Key) && $this->counter == 0) || $this->counter == 1) &&
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!$this->continuousBuffer;
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case self::ENGINE_OPENSSL:
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// OpenSSL 1.1.0 (released 25 Aug 2016) added support for chacha20.
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// PHP didn't support OpenSSL 1.1.0 until 7.0.19 (11 May 2017)
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// if you attempt to provide openssl with a 128 bit key (as opposed to a 256 bit key) openssl will null
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// pad the key to 256 bits and still use the expansion constant for 256-bit keys. the fact that
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// openssl treats the IV as both the counter and nonce, however, let's us use openssl in continuous mode
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// whereas libsodium does not
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if ($this->key_length != 32) {
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return false;
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}
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}
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return parent::isValidEngineHelper($engine);
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}
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/**
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* Encrypts a message.
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*
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* @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
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* @see self::crypt()
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* @param string $plaintext
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* @return string $ciphertext
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*/
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public function encrypt($plaintext)
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{
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$this->setup();
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if ($this->engine == self::ENGINE_LIBSODIUM) {
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return $this->encrypt_with_libsodium($plaintext);
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}
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return parent::encrypt($plaintext);
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}
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/**
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* Decrypts a message.
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*
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* $this->decrypt($this->encrypt($plaintext)) == $this->encrypt($this->encrypt($plaintext)).
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* At least if the continuous buffer is disabled.
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*
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* @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
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* @see self::crypt()
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* @param string $ciphertext
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* @return string $plaintext
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*/
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public function decrypt($ciphertext)
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{
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$this->setup();
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if ($this->engine == self::ENGINE_LIBSODIUM) {
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return $this->decrypt_with_libsodium($ciphertext);
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}
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return parent::decrypt($ciphertext);
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}
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/**
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* Encrypts a message with libsodium
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*
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* @see self::encrypt()
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* @param string $plaintext
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* @return string $text
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*/
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private function encrypt_with_libsodium($plaintext)
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{
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$params = [$plaintext, $this->aad, $this->nonce, $this->key];
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$ciphertext = strlen($this->nonce) == 8 ?
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sodium_crypto_aead_chacha20poly1305_encrypt(...$params) :
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sodium_crypto_aead_chacha20poly1305_ietf_encrypt(...$params);
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if (!$this->usePoly1305) {
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return substr($ciphertext, 0, strlen($plaintext));
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}
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$newciphertext = substr($ciphertext, 0, strlen($plaintext));
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$this->newtag = $this->usingGeneratedPoly1305Key && strlen($this->nonce) == 12 ?
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substr($ciphertext, strlen($plaintext)) :
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$this->poly1305($newciphertext);
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return $newciphertext;
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}
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/**
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* Decrypts a message with libsodium
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*
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* @see self::decrypt()
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* @param string $ciphertext
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* @return string $text
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*/
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private function decrypt_with_libsodium($ciphertext)
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{
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$params = [$ciphertext, $this->aad, $this->nonce, $this->key];
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if (isset($this->poly1305Key)) {
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if ($this->oldtag === false) {
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throw new InsufficientSetupException('Authentication Tag has not been set');
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}
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if ($this->usingGeneratedPoly1305Key && strlen($this->nonce) == 12) {
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$plaintext = sodium_crypto_aead_chacha20poly1305_ietf_decrypt(...$params);
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$this->oldtag = false;
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if ($plaintext === false) {
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throw new BadDecryptionException('Derived authentication tag and supplied authentication tag do not match');
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}
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return $plaintext;
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}
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$newtag = $this->poly1305($ciphertext);
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if ($this->oldtag != substr($newtag, 0, strlen($this->oldtag))) {
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$this->oldtag = false;
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throw new BadDecryptionException('Derived authentication tag and supplied authentication tag do not match');
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}
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$this->oldtag = false;
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}
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$plaintext = strlen($this->nonce) == 8 ?
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sodium_crypto_aead_chacha20poly1305_encrypt(...$params) :
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sodium_crypto_aead_chacha20poly1305_ietf_encrypt(...$params);
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return substr($plaintext, 0, strlen($ciphertext));
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}
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/**
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* Sets the nonce.
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*
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* @param string $nonce
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*/
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public function setNonce($nonce)
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{
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if (!is_string($nonce)) {
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throw new \UnexpectedValueException('The nonce should be a string');
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}
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/*
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from https://tools.ietf.org/html/rfc7539#page-7
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"Note also that the original ChaCha had a 64-bit nonce and 64-bit
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block count. We have modified this here to be more consistent with
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recommendations in Section 3.2 of [RFC5116]."
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*/
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switch (strlen($nonce)) {
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case 8: // 64 bits
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case 12: // 96 bits
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break;
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default:
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throw new \LengthException('Nonce of size ' . strlen($nonce) . ' not supported by this algorithm. Only 64-bit nonces or 96-bit nonces are supported');
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}
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$this->nonce = $nonce;
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$this->changed = true;
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$this->setEngine();
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}
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/**
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* Setup the self::ENGINE_INTERNAL $engine
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*
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* (re)init, if necessary, the internal cipher $engine
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*
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* _setup() will be called each time if $changed === true
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* typically this happens when using one or more of following public methods:
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*
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* - setKey()
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*
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* - setNonce()
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*
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* - First run of encrypt() / decrypt() with no init-settings
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*
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* @see self::setKey()
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* @see self::setNonce()
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* @see self::disableContinuousBuffer()
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*/
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protected function setup()
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{
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if (!$this->changed) {
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return;
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}
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$this->enbuffer = $this->debuffer = ['ciphertext' => '', 'counter' => $this->counter];
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$this->changed = $this->nonIVChanged = false;
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if ($this->nonce === false) {
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throw new InsufficientSetupException('No nonce has been defined');
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}
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if ($this->key === false) {
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throw new InsufficientSetupException('No key has been defined');
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}
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if ($this->usePoly1305 && !isset($this->poly1305Key)) {
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$this->usingGeneratedPoly1305Key = true;
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if ($this->engine == self::ENGINE_LIBSODIUM) {
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return;
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}
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$this->createPoly1305Key();
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}
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$key = $this->key;
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if (strlen($key) == 16) {
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$constant = 'expand 16-byte k';
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$key .= $key;
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} else {
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$constant = 'expand 32-byte k';
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}
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$this->p1 = $constant . $key;
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$this->p2 = $this->nonce;
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if (strlen($this->nonce) == 8) {
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$this->p2 = "\0\0\0\0" . $this->p2;
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}
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}
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/**
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* The quarterround function
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*
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* @param int $a
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* @param int $b
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* @param int $c
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* @param int $d
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*/
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protected static function quarterRound(&$a, &$b, &$c, &$d)
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{
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// in https://datatracker.ietf.org/doc/html/rfc7539#section-2.1 the addition,
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// xor'ing and rotation are all on the same line so i'm keeping it on the same
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// line here as well
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// @codingStandardsIgnoreStart
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$a+= $b; $d = self::leftRotate(intval($d) ^ intval($a), 16);
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$c+= $d; $b = self::leftRotate(intval($b) ^ intval($c), 12);
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$a+= $b; $d = self::leftRotate(intval($d) ^ intval($a), 8);
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$c+= $d; $b = self::leftRotate(intval($b) ^ intval($c), 7);
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// @codingStandardsIgnoreEnd
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}
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/**
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* The doubleround function
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*
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* @param int $x0 (by reference)
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* @param int $x1 (by reference)
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* @param int $x2 (by reference)
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* @param int $x3 (by reference)
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* @param int $x4 (by reference)
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* @param int $x5 (by reference)
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* @param int $x6 (by reference)
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* @param int $x7 (by reference)
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* @param int $x8 (by reference)
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* @param int $x9 (by reference)
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* @param int $x10 (by reference)
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* @param int $x11 (by reference)
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* @param int $x12 (by reference)
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* @param int $x13 (by reference)
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* @param int $x14 (by reference)
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* @param int $x15 (by reference)
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*/
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protected static function doubleRound(&$x0, &$x1, &$x2, &$x3, &$x4, &$x5, &$x6, &$x7, &$x8, &$x9, &$x10, &$x11, &$x12, &$x13, &$x14, &$x15)
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{
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// columnRound
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static::quarterRound($x0, $x4, $x8, $x12);
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static::quarterRound($x1, $x5, $x9, $x13);
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static::quarterRound($x2, $x6, $x10, $x14);
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static::quarterRound($x3, $x7, $x11, $x15);
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// rowRound
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static::quarterRound($x0, $x5, $x10, $x15);
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static::quarterRound($x1, $x6, $x11, $x12);
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static::quarterRound($x2, $x7, $x8, $x13);
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static::quarterRound($x3, $x4, $x9, $x14);
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}
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/**
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* The Salsa20 hash function function
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*
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* On my laptop this loop unrolled / function dereferenced version of parent::salsa20 encrypts 1mb of text in
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* 0.65s vs the 0.85s that it takes with the parent method.
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*
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* If we were free to assume that the host OS would always be 64-bits then the if condition in leftRotate could
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* be eliminated and we could knock this done to 0.60s.
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*
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* For comparison purposes, RC4 takes 0.16s and AES in CTR mode with the Eval engine takes 0.48s.
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* AES in CTR mode with the PHP engine takes 1.19s. Salsa20 / ChaCha20 do not benefit as much from the Eval
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* approach due to the fact that there are a lot less variables to de-reference, fewer loops to unroll, etc
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*
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* @param string $x
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*/
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protected static function salsa20($x)
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{
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list(, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15) = unpack('V*', $x);
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$z0 = $x0;
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$z1 = $x1;
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$z2 = $x2;
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$z3 = $x3;
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$z4 = $x4;
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$z5 = $x5;
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$z6 = $x6;
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$z7 = $x7;
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$z8 = $x8;
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$z9 = $x9;
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$z10 = $x10;
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$z11 = $x11;
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$z12 = $x12;
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$z13 = $x13;
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$z14 = $x14;
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$z15 = $x15;
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// @codingStandardsIgnoreStart
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// columnRound
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$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
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$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
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$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
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$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
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$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
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$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
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$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
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$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
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$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
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$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
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$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
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$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
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$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
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$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
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$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
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$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
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// rowRound
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$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
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$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
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$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
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$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
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$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
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$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
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$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
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$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
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$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
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$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
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$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
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$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
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$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
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$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
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$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
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$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
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// columnRound
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$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
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$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
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$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
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$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
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$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
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$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
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$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
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$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
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$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
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$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
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$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
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$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
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$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
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$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
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$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
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$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
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// rowRound
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$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
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$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
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$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
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$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
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|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
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|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
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|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
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|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
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|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
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|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
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|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
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|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
|
|
// columnRound
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 16);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 12);
|
|
$x0+= $x4; $x12 = self::leftRotate(intval($x12) ^ intval($x0), 8);
|
|
$x8+= $x12; $x4 = self::leftRotate(intval($x4) ^ intval($x8), 7);
|
|
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 16);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 12);
|
|
$x1+= $x5; $x13 = self::leftRotate(intval($x13) ^ intval($x1), 8);
|
|
$x9+= $x13; $x5 = self::leftRotate(intval($x5) ^ intval($x9), 7);
|
|
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 16);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 12);
|
|
$x2+= $x6; $x14 = self::leftRotate(intval($x14) ^ intval($x2), 8);
|
|
$x10+= $x14; $x6 = self::leftRotate(intval($x6) ^ intval($x10), 7);
|
|
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 16);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 12);
|
|
$x3+= $x7; $x15 = self::leftRotate(intval($x15) ^ intval($x3), 8);
|
|
$x11+= $x15; $x7 = self::leftRotate(intval($x7) ^ intval($x11), 7);
|
|
|
|
// rowRound
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 16);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 12);
|
|
$x0+= $x5; $x15 = self::leftRotate(intval($x15) ^ intval($x0), 8);
|
|
$x10+= $x15; $x5 = self::leftRotate(intval($x5) ^ intval($x10), 7);
|
|
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 16);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 12);
|
|
$x1+= $x6; $x12 = self::leftRotate(intval($x12) ^ intval($x1), 8);
|
|
$x11+= $x12; $x6 = self::leftRotate(intval($x6) ^ intval($x11), 7);
|
|
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 16);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 12);
|
|
$x2+= $x7; $x13 = self::leftRotate(intval($x13) ^ intval($x2), 8);
|
|
$x8+= $x13; $x7 = self::leftRotate(intval($x7) ^ intval($x8), 7);
|
|
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 16);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 12);
|
|
$x3+= $x4; $x14 = self::leftRotate(intval($x14) ^ intval($x3), 8);
|
|
$x9+= $x14; $x4 = self::leftRotate(intval($x4) ^ intval($x9), 7);
|
|
// @codingStandardsIgnoreEnd
|
|
|
|
$x0 += $z0;
|
|
$x1 += $z1;
|
|
$x2 += $z2;
|
|
$x3 += $z3;
|
|
$x4 += $z4;
|
|
$x5 += $z5;
|
|
$x6 += $z6;
|
|
$x7 += $z7;
|
|
$x8 += $z8;
|
|
$x9 += $z9;
|
|
$x10 += $z10;
|
|
$x11 += $z11;
|
|
$x12 += $z12;
|
|
$x13 += $z13;
|
|
$x14 += $z14;
|
|
$x15 += $z15;
|
|
|
|
return pack('V*', $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15);
|
|
}
|
|
}
|