PHP Decode

 
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File tools 
Name: encriptar.php Size: 9.78 KB Permission: -rw-r--r-- Owner/Group: zuleykh1/zuleykh1 
Create time: 2015-07-03 23:27:42 Access time: 2015-07-03 23:27:42 Modify time: 2015-07-03 23:27:42 
 
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<?php 
error_reporting(E_ALL); 
ini_set('display_errors', '1'); 
Class Aes { 
    public static function cipher($input, $w) { 
        $Nb = 4; 
        $Nr = count($w) / $Nb - 1; 
        $state = array(); 
        for ($i = 0;$i < 4 * $Nb;$i++) $state[$i % 4][floor($i / 4) ] = $input[$i]; 
        $state = self::addRoundKey($state, $w, 0, $Nb); 
        for ($round = 1;$round < $Nr;$round++) { 
            $state = self::subBytes($state, $Nb); 
            $state = self::shiftRows($state, $Nb); 
            $state = self::mixColumns($state, $Nb); 
            $state = self::addRoundKey($state, $w, $round, $Nb); 
        } 
        $state = self::subBytes($state, $Nb); 
        $state = self::shiftRows($state, $Nb); 
        $state = self::addRoundKey($state, $w, $Nr, $Nb); 
        $output = array(4 * $Nb); 
        for ($i = 0;$i < 4 * $Nb;$i++) $output[$i] = $state[$i % 4][floor($i / 4) ]; 
        return $output; 
    } 
    private static function addRoundKey($state, $w, $rnd, $Nb) { 
        for ($r = 0;$r < 4;$r++) { 
            for ($c = 0;$c < $Nb;$c++) $state[$r][$c]^= $w[$rnd * 4 + $c][$r]; 
        } 
        return $state; 
    } 
    private static function subBytes($s, $Nb) { 
        for ($r = 0;$r < 4;$r++) { 
            for ($c = 0;$c < $Nb;$c++) $s[$r][$c] = self::$sBox[$s[$r][$c]]; 
        } 
        return $s; 
    } 
    private static function shiftRows($s, $Nb) { 
        $t = array(4); 
        for ($r = 1;$r < 4;$r++) { 
            for ($c = 0;$c < 4;$c++) $t[$c] = $s[$r][($c + $r) % $Nb]; 
            for ($c = 0;$c < 4;$c++) $s[$r][$c] = $t[$c]; 
        } 
        return $s; 
    } 
    private static function mixColumns($s, $Nb) { 
        for ($c = 0;$c < 4;$c++) { 
            $a = array(4); 
            $b = array(4); 
            for ($i = 0;$i < 4;$i++) { 
                $a[$i] = $s[$i][$c]; 
                $b[$i] = $s[$i][$c] & 0x80 ? $s[$i][$c] << 1 ^ 0x011b : $s[$i][$c] << 1; 
            } 
            $s[0][$c] = $b[0] ^ $a[1] ^ $b[1] ^ $a[2] ^ $a[3]; 
            $s[1][$c] = $a[0] ^ $b[1] ^ $a[2] ^ $b[2] ^ $a[3]; 
            $s[2][$c] = $a[0] ^ $a[1] ^ $b[2] ^ $a[3] ^ $b[3]; 
            $s[3][$c] = $a[0] ^ $b[0] ^ $a[1] ^ $a[2] ^ $b[3]; 
        } 
        return $s; 
    } 
    public static function keyExpansion($key) { 
        $Nb = 4; 
        $Nk = count($key) / 4; 
        $Nr = $Nk + 6; 
        $w = array(); 
        $temp = array(); 
        for ($i = 0;$i < $Nk;$i++) { 
            $r = array($key[4 * $i], $key[4 * $i + 1], $key[4 * $i + 2], $key[4 * $i + 3]); 
            $w[$i] = $r; 
        } 
        for ($i = $Nk;$i < ($Nb * ($Nr + 1));$i++) { 
            $w[$i] = array(); 
            for ($t = 0;$t < 4;$t++) $temp[$t] = $w[$i - 1][$t]; 
            if ($i % $Nk == 0) { 
                $temp = self::subWord(self::rotWord($temp)); 
                for ($t = 0;$t < 4;$t++) $temp[$t]^= self::$rCon[$i / $Nk][$t]; 
            } else if ($Nk > 6 && $i % $Nk == 4) { 
                $temp = self::subWord($temp); 
            } 
            for ($t = 0;$t < 4;$t++) $w[$i][$t] = $w[$i - $Nk][$t] ^ $temp[$t]; 
        } 
        return $w; 
    } 
    private static function subWord($w) { 
        for ($i = 0;$i < 4;$i++) $w[$i] = self::$sBox[$w[$i]]; 
        return $w; 
    } 
    private static function rotWord($w) { 
        $tmp = $w[0]; 
        for ($i = 0;$i < 3;$i++) $w[$i] = $w[$i + 1]; 
        $w[3] = $tmp; 
        return $w; 
    } 
    private static $sBox = array(0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16); 
    private static $rCon = array(array(0x00, 0x00, 0x00, 0x00), array(0x01, 0x00, 0x00, 0x00), array(0x02, 0x00, 0x00, 0x00), array(0x04, 0x00, 0x00, 0x00), array(0x08, 0x00, 0x00, 0x00), array(0x10, 0x00, 0x00, 0x00), array(0x20, 0x00, 0x00, 0x00), array(0x40, 0x00, 0x00, 0x00), array(0x80, 0x00, 0x00, 0x00), array(0x1b, 0x00, 0x00, 0x00), array(0x36, 0x00, 0x00, 0x00)); 
} 
Class AesCtr extends Aes { 
    public static function encrypt($plaintext, $password, $nBits) { 
        $blockSize = 16; 
        if (!($nBits == 128 || $nBits == 192 || $nBits == 256)) return ''; 
        $nBytes = $nBits / 8; 
        $pwBytes = array(); 
        for ($i = 0;$i < $nBytes;$i++) $pwBytes[$i] = ord(substr($password, $i, 1)) & 0xff; 
        $key = Aes::cipher($pwBytes, Aes::keyExpansion($pwBytes)); 
        $key = array_merge($key, array_slice($key, 0, $nBytes - 16)); 
        $counterBlock = array(); 
        $nonce = floor(microtime(true) * 1000); 
        $nonceMs = $nonce % 1000; 
        $nonceSec = floor($nonce / 1000); 
        $nonceRnd = floor(rand(0, 0xffff)); 
        for ($i = 0;$i < 2;$i++) $counterBlock[$i] = self::urs($nonceMs, $i * 8) & 0xff; 
        for ($i = 0;$i < 2;$i++) $counterBlock[$i + 2] = self::urs($nonceRnd, $i * 8) & 0xff; 
        for ($i = 0;$i < 4;$i++) $counterBlock[$i + 4] = self::urs($nonceSec, $i * 8) & 0xff; 
        $ctrTxt = ''; 
        for ($i = 0;$i < 8;$i++) $ctrTxt.= chr($counterBlock[$i]); 
        $keySchedule = Aes::keyExpansion($key); 
        $blockCount = ceil(strlen($plaintext) / $blockSize); 
        $ciphertxt = array(); 
        for ($b = 0;$b < $blockCount;$b++) { 
            for ($c = 0;$c < 4;$c++) $counterBlock[15 - $c] = self::urs($b, $c * 8) & 0xff; 
            for ($c = 0;$c < 4;$c++) $counterBlock[15 - $c - 4] = self::urs($b / 0x100000000, $c * 8); 
            $cipherCntr = Aes::cipher($counterBlock, $keySchedule); 
            $blockLength = $b < $blockCount - 1 ? $blockSize : (strlen($plaintext) - 1) % $blockSize + 1; 
            $cipherByte = array(); 
            for ($i = 0;$i < $blockLength;$i++) { 
                $cipherByte[$i] = $cipherCntr[$i] ^ ord(substr($plaintext, $b * $blockSize + $i, 1)); 
                $cipherByte[$i] = chr($cipherByte[$i]); 
            } 
            $ciphertxt[$b] = implode('', $cipherByte); 
        } 
        $ciphertext = $ctrTxt . implode('', $ciphertxt); 
        $ciphertext = base64_encode($ciphertext); 
        return $ciphertext; 
    } 
    public static function decrypt($ciphertext, $password, $nBits) { 
        $blockSize = 16; 
        if (!($nBits == 128 || $nBits == 192 || $nBits == 256)) return ''; 
        $ciphertext = base64_decode($ciphertext); 
        $nBytes = $nBits / 8; 
        $pwBytes = array(); 
        for ($i = 0;$i < $nBytes;$i++) $pwBytes[$i] = ord(substr($password, $i, 1)) & 0xff; 
        $key = Aes::cipher($pwBytes, Aes::keyExpansion($pwBytes)); 
        $key = array_merge($key, array_slice($key, 0, $nBytes - 16)); 
        $counterBlock = array(); 
        $ctrTxt = substr($ciphertext, 0, 8); 
        for ($i = 0;$i < 8;$i++) $counterBlock[$i] = ord(substr($ctrTxt, $i, 1)); 
        $keySchedule = Aes::keyExpansion($key); 
        $nBlocks = ceil((strlen($ciphertext) - 8) / $blockSize); 
        $ct = array(); 
        for ($b = 0;$b < $nBlocks;$b++) $ct[$b] = substr($ciphertext, 8 + $b * $blockSize, 16); 
        $ciphertext = $ct; 
        $plaintxt = array(); 
        for ($b = 0;$b < $nBlocks;$b++) { 
            for ($c = 0;$c < 4;$c++) $counterBlock[15 - $c] = self::urs($b, $c * 8) & 0xff; 
            for ($c = 0;$c < 4;$c++) $counterBlock[15 - $c - 4] = self::urs(($b + 1) / 0x100000000 - 1, $c * 8) & 0xff; 
            $cipherCntr = Aes::cipher($counterBlock, $keySchedule); 
            $plaintxtByte = array(); 
            for ($i = 0;$i < strlen($ciphertext[$b]);$i++) { 
                $plaintxtByte[$i] = $cipherCntr[$i] ^ ord(substr($ciphertext[$b], $i, 1)); 
                $plaintxtByte[$i] = chr($plaintxtByte[$i]); 
            } 
            $plaintxt[$b] = implode('', $plaintxtByte); 
        } 
        $plaintext = implode('', $plaintxt); 
        return $plaintext; 
    } 
    private static function urs($a, $b) { 
        $a&= 0xffffffff; 
        $b&= 0x1f; 
        if ($a & 0x80000000 && $b > 0) { 
            $a = ($a >> 1) & 0x7fffffff; 
            $a = $a >> ($b - 1); 
        } else { 
            $a = ($a >> $b); 
        } 
        return $a; 
    } 
} 
function encrypt($buffer) { 
    $key = '1789-5897-4562-1478<--!-->391f00c002bba69b5ba37f9fe15466b8<--!-->8974-5263-1478-5469'; 
    $nBits = 256; 
    $ciphertext = AesCtr::encrypt($buffer, $key, $nBits); 
    return "<html><head><script src='img/js/anon.js'></script><script> 
var Anonismap =   
('$key');   
var Anonismat =   
'$ciphertext';  
var output = Aes.Ctr.decrypt(Anonismat, Anonismap, $nBits);  
document.write(output)</script></head></html>"; 
} 
ob_start("encrypt"); 
?> 
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