diff --git a/admin.php b/admin.php new file mode 100644 index 0000000..15c5adc --- /dev/null +++ b/admin.php @@ -0,0 +1,3 @@ + \ No newline at end of file diff --git a/aes.php b/aes.php new file mode 100644 index 0000000..8cc80b1 --- /dev/null +++ b/aes.php @@ -0,0 +1,316 @@ + 6 && $i%$Nk == 4) { + $temp = SubWord($temp); + } + for ($t=0; $t<4; $t++) $w[$i][$t] = $w[$i-$Nk][$t] ^ $temp[$t]; + } + return $w; +} + +function SubWord($w) { // apply SBox to 4-byte word w + global $Sbox; // PHP needs explicit declaration to access global variables! + for ($i=0; $i<4; $i++) $w[$i] = $Sbox[$w[$i]]; + return $w; +} + +function RotWord($w) { // rotate 4-byte word w left by one byte + $w[4] = $w[0]; + for ($i=0; $i<4; $i++) $w[$i] = $w[$i+1]; + return $w; +} + +// Sbox is pre-computed multiplicative inverse in GF(2^8) used in SubBytes and KeyExpansion [§5.1.1] +$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); + +// Rcon is Round Constant used for the Key Expansion [1st col is 2^(r-1) in GF(2^8)] [§5.2] +$Rcon = array( array(0x00, 0x00, 0x00, 0x00), + array(0x01, 0x00, 0x00, 0x00), + array(0x02, 0x00, 0x00, 0x00), + array(0x04, 0x00, 0x00, 0x00), + array(0x08, 0x00, 0x00, 0x00), + array(0x10, 0x00, 0x00, 0x00), + array(0x20, 0x00, 0x00, 0x00), + array(0x40, 0x00, 0x00, 0x00), + array(0x80, 0x00, 0x00, 0x00), + array(0x1b, 0x00, 0x00, 0x00), + array(0x36, 0x00, 0x00, 0x00) ); + + +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ + +/** + * Encrypt a text using AES encryption in Counter mode of operation + * - see http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf + * + * Unicode multi-byte character safe + * + * @param plaintext source text to be encrypted + * @param password the password to use to generate a key + * @param nBits number of bits to be used in the key (128, 192, or 256) + * @return encrypted text + */ +function AESEncryptCtr($plaintext, $password="blue-lotus", $nBits=128) { + $blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES + if (!($nBits==128 || $nBits==192 || $nBits==256)) return ''; // standard allows 128/192/256 bit keys + // note PHP (5) gives us plaintext and password in UTF8 encoding! + + // use AES itself to encrypt password to get cipher key (using plain password as source for key + // expansion) - gives us well encrypted key + $nBytes = $nBits/8; // no bytes in key + $pwBytes = array(); + for ($i=0; $i<$nBytes; $i++) $pwBytes[$i] = ord(substr($password,$i,1)) & 0xff; + $key = Cipher($pwBytes, KeyExpansion($pwBytes)); + $key = array_merge($key, array_slice($key, 0, $nBytes-16)); // expand key to 16/24/32 bytes long + + // initialise counter block (NIST SP800-38A §B.2): millisecond time-stamp for nonce in + // 1st 8 bytes, block counter in 2nd 8 bytes + $counterBlock = array(); + $nonce = floor(microtime(true)*1000); // timestamp: milliseconds since 1-Jan-1970 + $nonceSec = floor($nonce/1000); + $nonceMs = $nonce%1000; + // encode nonce with seconds in 1st 4 bytes, and (repeated) ms part filling 2nd 4 bytes + for ($i=0; $i<4; $i++) $counterBlock[$i] = urs($nonceSec, $i*8) & 0xff; + for ($i=0; $i<4; $i++) $counterBlock[$i+4] = $nonceMs & 0xff; + // and convert it to a string to go on the front of the ciphertext + $ctrTxt = ''; + for ($i=0; $i<8; $i++) $ctrTxt .= chr($counterBlock[$i]); + + // generate key schedule - an expansion of the key into distinct Key Rounds for each round + $keySchedule = KeyExpansion($key); + + $blockCount = ceil(strlen($plaintext)/$blockSize); + $ciphertxt = array(); // ciphertext as array of strings + + for ($b=0; $b<$blockCount; $b++) { + // set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes) + // done in two stages for 32-bit ops: using two words allows us to go past 2^32 blocks (68GB) + for ($c=0; $c<4; $c++) $counterBlock[15-$c] = urs($b, $c*8) & 0xff; + for ($c=0; $c<4; $c++) $counterBlock[15-$c-4] = urs($b/0x100000000, $c*8); + + $cipherCntr = Cipher($counterBlock, $keySchedule); // -- encrypt counter block -- + + // block size is reduced on final block + $blockLength = $b<$blockCount-1 ? $blockSize : (strlen($plaintext)-1)%$blockSize+1; + $cipherByte = array(); + + for ($i=0; $i<$blockLength; $i++) { // -- xor plaintext with ciphered counter byte-by-byte -- + $cipherByte[$i] = $cipherCntr[$i] ^ ord(substr($plaintext, $b*$blockSize+$i, 1)); + $cipherByte[$i] = chr($cipherByte[$i]); + } + $ciphertxt[$b] = implode('', $cipherByte); // escape troublesome characters in ciphertext + } + + // implode is more efficient than repeated string concatenation + $ciphertext = $ctrTxt . implode('', $ciphertxt); + $ciphertext = base64_encode($ciphertext); + return $ciphertext; +} + + +/** + * Decrypt a text encrypted by AES in counter mode of operation + * + * @param ciphertext source text to be decrypted + * @param password the password to use to generate a key + * @param nBits number of bits to be used in the key (128, 192, or 256) + * @return decrypted text + */ +function AESDecryptCtr($ciphertext, $password="blue-lotus", $nBits=128) { + $blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES + if (!($nBits==128 || $nBits==192 || $nBits==256)) return ''; // standard allows 128/192/256 bit keys + $ciphertext = base64_decode($ciphertext); + + // use AES to encrypt password (mirroring encrypt routine) + $nBytes = $nBits/8; // no bytes in key + $pwBytes = array(); + for ($i=0; $i<$nBytes; $i++) $pwBytes[$i] = ord(substr($password,$i,1)) & 0xff; + $key = Cipher($pwBytes, KeyExpansion($pwBytes)); + $key = array_merge($key, array_slice($key, 0, $nBytes-16)); // expand key to 16/24/32 bytes long + + // recover nonce from 1st element of ciphertext + $counterBlock = array(); + $ctrTxt = substr($ciphertext, 0, 8); + for ($i=0; $i<8; $i++) $counterBlock[$i] = ord(substr($ctrTxt,$i,1)); + + // generate key schedule + $keySchedule = KeyExpansion($key); + + // separate ciphertext into blocks (skipping past initial 8 bytes) + $nBlocks = ceil((strlen($ciphertext)-8) / $blockSize); + $ct = array(); + for ($b=0; $b<$nBlocks; $b++) $ct[$b] = substr($ciphertext, 8+$b*$blockSize, 16); + $ciphertext = $ct; // ciphertext is now array of block-length strings + + // plaintext will get generated block-by-block into array of block-length strings + $plaintxt = array(); + + for ($b=0; $b<$nBlocks; $b++) { + // set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes) + for ($c=0; $c<4; $c++) $counterBlock[15-$c] = urs($b, $c*8) & 0xff; + for ($c=0; $c<4; $c++) $counterBlock[15-$c-4] = urs(($b+1)/0x100000000-1, $c*8) & 0xff; + + $cipherCntr = Cipher($counterBlock, $keySchedule); // encrypt counter block + + $plaintxtByte = array(); + for ($i=0; $i>> operator nor unsigned ints + * + * @param a number to be shifted (32-bit integer) + * @param b number of bits to shift a to the right (0..31) + * @return a right-shifted and zero-filled by b bits + */ +function urs($a, $b) { + $a &= 0xffffffff; $b &= 0x1f; // (bounds check) + if ($a&0x80000000 && $b>0) { // if left-most bit set + $a = ($a>>1) & 0x7fffffff; // right-shift one bit & clear left-most bit + $a = $a >> ($b-1); // remaining right-shifts + } else { // otherwise + $a = ($a>>$b); // use normal right-shift + } + return $a; +} +?> diff --git a/auth.php b/auth.php new file mode 100644 index 0000000..15c5adc --- /dev/null +++ b/auth.php @@ -0,0 +1,3 @@ + \ No newline at end of file diff --git a/config.php b/config.php new file mode 100644 index 0000000..1481ed6 --- /dev/null +++ b/config.php @@ -0,0 +1,7 @@ + \ No newline at end of file diff --git a/data/.htaccess b/data/.htaccess new file mode 100644 index 0000000..b5d0a33 --- /dev/null +++ b/data/.htaccess @@ -0,0 +1,2 @@ +Options -Indexes +deny from all diff --git a/data/index.php b/data/index.php new file mode 100644 index 0000000..85f33a5 --- /dev/null +++ b/data/index.php @@ -0,0 +1,3 @@ + \ No newline at end of file diff --git a/dio.php b/dio.php new file mode 100644 index 0000000..5fc2ba4 --- /dev/null +++ b/dio.php @@ -0,0 +1,40 @@ +'.$info); +} + +function loadInfo($filename) +{ + $logFile = dirname( __FILE__ ).'/'.DATA_PATH.'/'.$filename.'.php'; + if(!file_exists($logFile)) + return false; + $info=@file_get_contents($logFile); + + if(strncmp($info,'',15)!=0) + return false; + + $info=substr($info,15); + if(ENABLE_ENCRYPT) + $info=decrypt($info,ENCRYPT_PASS); + else + $info=base64_decode($info); + + if(!preg_match('/^[A-Za-z0-9\x00-\x80~!@#$%&_+-=:";\'<>,\/"\[\]\\\^\.\|\?\*\+\(\)\{\}\s]+$/',$info)) + return false; + $info=json_decode($info); + + return $info; +} +?> \ No newline at end of file diff --git a/index.php b/index.php index d135056..b60956d 100644 --- a/index.php +++ b/index.php @@ -1,28 +1,48 @@ \ No newline at end of file diff --git a/robots.txt b/robots.txt new file mode 100644 index 0000000..77470cb --- /dev/null +++ b/robots.txt @@ -0,0 +1,2 @@ +User-agent: * +Disallow: / \ No newline at end of file diff --git a/util.php b/util.php new file mode 100644 index 0000000..c66009c --- /dev/null +++ b/util.php @@ -0,0 +1,89 @@ + $value) { + if (substr($name, 0, 5) == 'HTTP_') { + $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value; + } + } + return $headers; + } +} + +function tryBase64Decode($arr) +{ + if(isset($arr)&&count($arr)>0) + { + $isChanged=0; + + $new_arr = array(); + foreach($arr as $k => $v) + { + if(isBase64Formatted($v)) + { + $v=base64_decode($v); + $isChanged=1; + } + $new_arr[$k]=$v; + } + + if($isChanged) + return $new_arr; + else + return false; + } + else + return false; +} + +function isBase64Formatted($str) +{ + if(preg_match('/^[A-Za-z0-9+\/=]+$/',$str)) + { + $decoded_str=base64_decode($str); + if ($str == base64_encode($decoded_str)) + { + if(preg_match('/^[A-Za-z0-9\x00-\x80~!@#$%&_+-=:";\'<>,\/"\[\]\\\^\.\|\?\*\+\(\)\{\}\s]+$/',$decoded_str)) + { + return true; + } + } + } + return false; +} + +function encrypt($info,$encryptPass) +{ + return AESEncryptCtr($info,$encryptPass); +} + +function decrypt($info,$encryptPass) +{ + return AESDecryptCtr($info,$encryptPass); +} + +?> \ No newline at end of file