PHP对称加密类及案例

By admin 2016年8月12日 PHP

3457

项目中很多时间会用到一些加密数据请求,下面是一个案例,请求方加密,接受方解密,处理数据。

该类提供方法可以将字符串转为加密字符串,方法中会用到key,解密时,必须以知道key作为解密

参数解密。

类文件代码:

<?PHP
/*
 * @filename: AES.php
 * @author: Jessica.yang
 * @data: 2007.07.20
 * @note: In version 4 of PHP, the function "__construct" is not executed, and it doesn't approve the private key words.
 */
class Aes{
    var $rcon = array (
        0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
        0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4,
        0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91);

    // S盒变换
    var $S = array(
        99, 124, 119, 123, 242, 107, 111, 197,  48,   1, 103,  43, 254, 215, 171, 118,
        202, 130, 201, 125, 250,  89,  71, 240, 173, 212, 162, 175, 156, 164, 114, 192,
        183, 253, 147,  38,  54,  63, 247, 204,  52, 165, 229, 241, 113, 216,  49,  21,
        4, 199,  35, 195,  24, 150,   5, 154,   7,  18, 128, 226, 235,  39, 178, 117,
        9, 131,  44,  26,  27, 110,  90, 160,  82,  59, 214, 179,  41, 227,  47, 132,
        83, 209,   0, 237,  32, 252, 177,  91, 106, 203, 190,  57,  74,  76,  88, 207,
        208, 239, 170, 251,  67,  77,  51, 133,  69, 249,   2, 127,  80,  60, 159, 168,
        81, 163,  64, 143, 146, 157,  56, 245, 188, 182, 218,  33,  16, 255, 243, 210,
        205,  12,  19, 236,  95, 151,  68,  23, 196, 167, 126,  61, 100,  93,  25, 115,
        96, 129,  79, 220,  34,  42, 144, 136,  70, 238, 184,  20, 222,  94,  11, 219,
        224,  50,  58,  10,  73,   6,  36,  92, 194, 211, 172,  98, 145, 149, 228, 121,
        231, 200,  55, 109,	141, 213,  78, 169, 108,  86, 244, 234, 101, 122, 174,   8,
        186, 120,  37,  46,  28, 166, 180, 198, 232, 221, 116,  31,  75, 189, 139, 138,
        112,  62, 181, 102,  72,   3, 246,  14,  97,  53,  87, 185, 134, 193,  29, 158,
        225, 248, 152,  17, 105, 217, 142, 148, 155,  30, 135, 233, 206,  85,  40, 223,
        140, 161, 137,  13, 191, 230,  66, 104,  65, 153,  45,  15, 176,  84, 187,  22
    );

    // S盒逆变换
    var $Si = array(
        82,   9, 106, 213,  48,  54, 165,  56, 191,  64, 163, 158, 129, 243, 215, 251,
        124, 227,  57, 130, 155,  47, 255, 135,  52, 142,  67,  68, 196, 222, 233, 203,
        84, 123, 148,  50, 166, 194,  35,  61, 238,  76, 149,  11,  66, 250, 195,  78,
        8,  46, 161, 102,  40, 217,  36, 178, 118,  91, 162,  73, 109, 139, 209,  37,
        114, 248, 246, 100, 134, 104, 152,  22, 212, 164,  92, 204,  93, 101, 182, 146,
        108, 112,  72,  80, 253, 237, 185, 218,  94,  21,  70,  87, 167, 141, 157, 132,
        144, 216, 171,   0, 140, 188, 211,  10, 247, 228,  88,   5, 184, 179,  69,   6,
        208,  44,  30, 143, 202,  63,  15,   2, 193, 175, 189,   3,   1,  19, 138, 107,
        58, 145,  17,  65,  79, 103, 220, 234, 151, 242, 207, 206, 240, 180, 230, 115,
        150, 172, 116,  34, 231, 173,  53, 133, 226, 249,  55, 232,  28, 117, 223, 110,
        71, 241,  26, 113,  29,  41, 197, 137, 111, 183,  98,  14, 170,  24, 190,  27,
        252,  86,  62,  75, 198, 210, 121,  32, 154, 219, 192, 254, 120, 205,  90, 244,
        31, 221, 168,  51, 136,   7, 199,  49, 177,  18,  16,  89,  39, 128, 236,  95,
        96,  81, 127, 169,  25, 181,  74,  13,  45, 229, 122, 159, 147, 201, 156, 239,
        160, 224,  59,  77, 174,  42, 245, 176, 200, 235, 187,  60, 131,  83, 153,  97,
        23,  43,   4, 126, 186, 119, 214,  38, 225, 105,  20,  99,  85,	 33,  12, 125
    );

    // 线性混合层列变换矩阵
    var $T2 = array(
        0,   2,   4,   6,   8,  10,  12,  14,  16,  18,  20,  22,  24,  26,  28, 30,
        32,  34,  36,  38,  40,  42,  44,  46,  48,  50,  52,  54,  56,  58,  60, 62,
        64,  66,  68,  70,  72,  74,  76,  78,  80,  82,  84,  86,  88,  90,  92, 94,
        96,  98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126,
        128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158,
        160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186, 188, 190,
        192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 220, 222,
        224, 226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 248, 250, 252, 254,
        27,  25,  31,  29,  19, 17, 23, 21,
        11, 9, 15, 13, 3, 1, 7, 5, 59, 57, 63, 61, 51, 49, 55,
        53, 43, 41, 47, 45, 35, 33, 39, 37, 91, 89, 95, 93, 83, 81,
        87, 85, 75, 73, 79, 77, 67, 65, 71, 69, 123, 121, 127, 125, 115,
        113, 119, 117, 107, 105, 111, 109, 99, 97, 103, 101, 155, 153, 159, 157,
        147, 145, 151, 149, 139, 137, 143, 141, 131, 129, 135, 133, 187, 185, 191,
        189, 179, 177, 183, 181, 171, 169, 175, 173, 163, 161, 167, 165, 219, 217,
        223, 221, 211, 209, 215, 213, 203, 201, 207, 205, 195, 193, 199, 197, 251,
        249, 255, 253, 243, 241, 247, 245, 235, 233, 239, 237, 227, 225, 231, 229 );
    var $T3 = array(
        0, 3, 6, 5, 12, 15, 10, 9, 24, 27, 30, 29, 20, 23, 18, 17,
        48, 51, 54, 53, 60, 63, 58, 57, 40, 43, 46, 45, 36, 39, 34,
        33, 96, 99, 102, 101, 108, 111, 106, 105, 120, 123, 126, 125, 116, 119,
        114, 113, 80, 83, 86, 85, 92, 95, 90, 89, 72, 75, 78, 77, 68,
        71, 66, 65, 192, 195, 198, 197, 204, 207, 202, 201, 216, 219, 222, 221,
        212, 215, 210, 209, 240, 243, 246, 245, 252, 255, 250, 249, 232, 235, 238,
        237, 228, 231, 226, 225, 160, 163, 166, 165, 172, 175, 170, 169, 184, 187,
        190, 189, 180, 183, 178, 177, 144, 147, 150, 149, 156, 159, 154, 153, 136,
        139, 142, 141, 132, 135, 130, 129, 155, 152, 157, 158, 151, 148, 145, 146,
        131, 128, 133, 134, 143, 140, 137, 138, 171, 168, 173, 174, 167, 164, 161,
        162, 179, 176, 181, 182, 191, 188, 185, 186, 251, 248, 253, 254, 247, 244,
        241, 242, 227, 224, 229, 230, 239, 236, 233, 234, 203, 200, 205, 206, 199,
        196, 193, 194, 211, 208, 213, 214, 223, 220, 217, 218, 91, 88, 93, 94,
        87, 84, 81, 82, 67, 64, 69, 70, 79, 76, 73, 74, 107, 104, 109,
        110, 103, 100, 97, 98, 115, 112, 117, 118, 127, 124, 121, 122, 59, 56,
        61, 62, 55, 52, 49, 50, 35, 32, 37, 38, 47, 44, 41, 42, 11,
        8, 13, 14, 7, 4, 1, 2, 19, 16, 21, 22, 31, 28, 25, 26 );

    // 线性混合层列变换逆矩阵
    var $T9 = array(
        0, 9, 18, 27, 36, 45, 54, 63, 72, 65, 90, 83, 108, 101, 126, 119,
        144, 153, 130, 139, 180, 189, 166, 175, 216, 209, 202, 195, 252, 245, 238,
        231, 59, 50, 41, 32, 31, 22, 13, 4, 115, 122, 97, 104, 87, 94,
        69, 76, 171, 162, 185, 176, 143, 134, 157, 148, 227, 234, 241, 248, 199,
        206, 213, 220, 118, 127, 100, 109, 82, 91, 64, 73, 62, 55, 44, 37,
        26, 19, 8, 1, 230, 239, 244, 253, 194, 203, 208, 217, 174, 167, 188,
        181, 138, 131, 152, 145, 77, 68, 95, 86, 105, 96, 123, 114, 5, 12,
        23, 30, 33, 40, 51, 58, 221, 212, 207, 198, 249, 240, 235, 226, 149,
        156, 135, 142, 177, 184, 163, 170, 236, 229, 254, 247, 200, 193, 218, 211,
        164, 173, 182, 191, 128, 137, 146, 155, 124, 117, 110, 103, 88, 81, 74,
        67, 52, 61, 38, 47, 16, 25, 2, 11, 215, 222, 197, 204, 243, 250,
        225, 232, 159, 150, 141, 132, 187, 178, 169, 160, 71, 78, 85, 92, 99,
        106, 113, 120, 15, 6, 29, 20, 43, 34, 57, 48, 154, 147, 136, 129,
        190, 183, 172, 165, 210, 219, 192, 201, 246, 255, 228, 237, 10, 3, 24,
        17, 46, 39, 60, 53, 66, 75, 80, 89, 102, 111, 116, 125, 161, 168,
        179, 186, 133, 140, 151, 158, 233, 224, 251, 242, 205, 196, 223, 214, 49,
        56, 35, 42, 21, 28, 7, 14, 121, 112, 107, 98, 93, 84, 79, 70);

    /* Definicion de 0x0b*state[i][j] en GF(2^8)(para InvMixColumns)*/
    var $T11 = array(
        0, 11, 22, 29, 44, 39, 58, 49, 88, 83, 78, 69, 116, 127, 98, 105,
        176, 187, 166, 173, 156, 151, 138, 129, 232, 227, 254, 245, 196, 207, 210,
        217, 123, 112, 109, 102, 87, 92, 65, 74, 35, 40, 53, 62, 15, 4,
        25, 18, 203, 192, 221, 214, 231, 236, 241, 250, 147, 152, 133, 142, 191,
        180, 169, 162, 246, 253, 224, 235, 218, 209, 204, 199, 174, 165, 184, 179,
        130, 137, 148, 159, 70, 77, 80, 91, 106, 97, 124, 119, 30, 21, 8,
        3, 50, 57, 36, 47, 141, 134, 155, 144, 161, 170, 183, 188, 213, 222,
        195, 200, 249, 242, 239, 228, 61, 54, 43, 32, 17, 26, 7, 12, 101,
        110, 115, 120, 73, 66, 95, 84, 247, 252, 225, 234, 219, 208, 205, 198,
        175, 164, 185, 178, 131, 136, 149, 158, 71, 76, 81, 90, 107, 96, 125,
        118, 31, 20, 9, 2, 51, 56, 37, 46, 140, 135, 154, 145, 160, 171,
        182, 189, 212, 223, 194, 201, 248, 243, 238, 229, 60, 55, 42, 33, 16,
        27, 6, 13, 100, 111, 114, 121, 72, 67, 94, 85, 1, 10, 23, 28,
        45, 38, 59, 48, 89, 82, 79, 68, 117, 126, 99, 104, 177, 186, 167,
        172, 157, 150, 139, 128, 233, 226, 255, 244, 197, 206, 211, 216, 122, 113,
        108, 103, 86, 93, 64, 75, 34, 41, 52, 63, 14, 5, 24, 19, 202,
        193, 220, 215, 230, 237, 240, 251, 146, 153, 132, 143, 190, 181, 168, 163);

    /* Definicion de 0x0d*state[i][j] en GF(2^8) (para InvMixColumns)*/
    var $T13 = array(
        0, 13, 26, 23, 52, 57, 46, 35, 104, 101, 114, 127, 92, 81, 70, 75,
        208, 221, 202, 199, 228, 233, 254, 243, 184, 181, 162, 175, 140, 129, 150,
        155, 187, 182, 161, 172, 143, 130, 149, 152, 211, 222, 201, 196, 231, 234,
        253, 240, 107, 102, 113, 124, 95, 82, 69, 72, 3, 14, 25, 20, 55,
        58, 45, 32, 109, 96, 119, 122, 89, 84, 67, 78, 5, 8, 31, 18,
        49, 60, 43, 38, 189, 176, 167, 170, 137, 132, 147, 158, 213, 216, 207,
        194, 225, 236, 251, 246, 214, 219, 204, 193, 226, 239, 248, 245, 190, 179,
        164, 169, 138, 135, 144, 157, 6, 11, 28, 17, 50, 63, 40, 37, 110,
        99, 116, 121, 90, 87, 64, 77, 218, 215, 192, 205, 238, 227, 244, 249,
        178, 191, 168, 165, 134, 139, 156, 145, 10, 7, 16, 29, 62, 51, 36,
        41, 98, 111, 120, 117, 86, 91, 76, 65, 97, 108, 123, 118, 85, 88,
        79, 66, 9, 4, 19, 30, 61, 48, 39, 42, 177, 188, 171, 166, 133,
        136, 159, 146, 217, 212, 195, 206, 237, 224, 247, 250, 183, 186, 173, 160,
        131, 142, 153, 148, 223, 210, 197, 200, 235, 230, 241, 252, 103, 106, 125,
        112, 83, 94, 73, 68, 15, 2, 21, 24, 59, 54, 33, 44, 12, 1,
        22, 27, 56, 53, 34, 47, 100, 105, 126, 115, 80, 93, 74, 71, 220,
        209, 198, 203, 232, 229, 242, 255, 180, 185, 174, 163, 128, 141, 154, 151);
    var $T14 = array (
        0, 14, 28, 18, 56, 54, 36, 42, 112, 126, 108, 98, 72, 70, 84, 90,
        224, 238, 252, 242, 216, 214, 196, 202, 144, 158, 140, 130, 168, 166, 180,
        186, 219, 213, 199, 201, 227, 237, 255, 241, 171, 165, 183, 185, 147, 157,
        143, 129, 59, 53, 39, 41, 3, 13, 31, 17, 75, 69, 87, 89, 115,
        125, 111, 97, 173, 163, 177, 191, 149, 155, 137, 135, 221, 211, 193, 207,
        229, 235, 249, 247, 77, 67, 81, 95, 117, 123, 105, 103, 61, 51, 33,
        47, 5, 11, 25, 23, 118, 120, 106, 100, 78, 64, 82, 92, 6, 8,
        26, 20, 62, 48, 34, 44, 150, 152, 138, 132, 174, 160, 178, 188, 230,
        232, 250, 244, 222, 208, 194, 204, 65, 79, 93, 83, 121, 119, 101, 107,
        49, 63, 45, 35, 9, 7, 21, 27, 161, 175, 189, 179, 153, 151, 133,
        139, 209, 223, 205, 195, 233, 231, 245, 251, 154, 148, 134, 136, 162, 172,
        190, 176, 234, 228, 246, 248, 210, 220, 206, 192, 122, 116, 102, 104, 66,
        76, 94, 80, 10, 4, 22, 24, 50, 60, 46, 32, 236, 226, 240, 254,
        212, 218, 200, 198, 156, 146, 128, 142, 164, 170, 184, 182, 12, 2, 16,
        30, 52, 58, 40, 38, 124, 114, 96, 110, 68, 74, 88, 86, 55, 57,
        43, 37, 15, 1, 19, 29, 71, 73, 91, 85, 127, 113, 99, 109, 215,
        217, 203, 197, 239, 225, 243, 253, 167, 169, 187, 181, 159, 145, 131, 141);

    var $Nr = 10;// 轮变换圈数
    var $Nb = 4;// 存放中间结果状态的矩阵列数
    var $Nk = 4;
    var $state = array(array());// 存放中间结果状态
    var $shifts_r = array(array(0, 1, 2, 3),array(3, 0, 1, 2),array(2, 3, 0, 1),array(1, 2, 3, 0));
    var $shifts_l = array(array(0, 1, 2, 3),array(1, 2, 3, 0),array(2, 3, 0, 1),array(3, 0, 1, 2));
    var $debug = false;
    var $toHex = false;

    /* 
     * 构造函数
     * @param: hex 结果是否以十六进制显示，true：显示
     * @param: debug 是否打印调试信息 true：打印调试信息
     */
    function AES($hex = false, $debug = false)
    {
        $this->debug = $debug;
        $this->toHex = $hex;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function toHexString 把字符串中的每个字符转换成十六进制数
     */
    private function toHexString ($sa)
    {
        $buf = "";
        for ($i = 0; $i < strlen($sa); $i++)
        {
            $val = dechex(ord($sa{$i}));
            if(strlen($val)< 2)
                $val = "0".$val;
            $buf .= $val;
        }
        return $buf;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function fromHexString 把十六进制数转换成字符串
     */
    private function fromHexString($sa)
    {
        $buf = "";
        for($i = 0; $i < strlen($sa); $i += 2)
        {
            $val = chr(hexdec(substr($sa, $i, 2)));
            $buf .= $val;
        }
        return $buf;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function showInt 输出调试信息
     */
    private function showInt($texto)
    {
        if($this->debug)
        {
            echo($texto.": ");
            for($i = 0; $i<4; $i++)
            {
                for($j = 0; $j<4; $j++)
                {
                    echo(dechex($this->state[$j][$i])." ");
                }
            }
            echo ("<br/>");
        }
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function makeKey 密钥扩展(128bit)
     * @param hash　密钥
     * @return array　返回三维数组
     */
    public function makeKey($hash)
    {
        if(strlen($hash) < 16)
            for($i = strlen($hash); $i < 16; $i++)
                $hash .= " ";
        $rconpocharer = 0;
        $tk = array(array());;
        $rk = array(array(array()));
        for($j = 0; $j < $this->Nk; $j++)
            for($i = 0; $i < 4; $i++)
                $tk[$i][$j] = ord($hash[$j*4+$i]) > 256 ? ord($hash[$j*4+$i])%256 : ord($hash[$j*4+$i]);// 转换成ASCII码值
        $t = 0;
        for($j = 0; ($j < $this->Nk) && ($t < ($this->Nr+1)*$this->Nb); $j++, $t++)
            for($i = 0; $i < 4; $i++)
                $rk[$t / $this->Nb][$i][$t % $this->Nb] = $tk[$i][$j];

        while ($t < ($this->Nr+1)*$this->Nb)
        {
            for($i = 0; $i < 4; $i++)
                $tk[$i][0] ^= $this->S[$tk[($i+1)%4][$this->Nk-1]];
            $tk[0][0] ^= $this->rcon[$rconpocharer++];
            for($j = 1; $j < $this->Nk; $j++)
                for($i = 0; $i < 4; $i++)
                    $tk[$i][$j] ^= $tk[$i][$j-1];

            for($j = 0; ($j < $this->Nk) && ($t < ($this->Nr+1)*$this->Nb); $j++, $t++)
                for($i = 0; $i < 4; $i++)
                    $rk[$t / $this->Nb][$i][$t % $this->Nb] = $tk[$i][$j];
        }
        return $rk;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function: encryptString 加密字符串
     * @param: excodeStr 被加密的字符串
     * @param: expandedKeys 扩展后的密钥
     * @return: 返回加密后的字符串
     */
    public function encryptString($excodeStr, $expandedKeys)
    {
        if(strlen($excodeStr) % 16 == 0 )
            $cnt = strlen($excodeStr) /16;
        else
        {
            $cnt = ceil(strlen($excodeStr) /16);
            for($i = strlen($excodeStr); $i < $cnt *16; $i++)
                $excodeStr .= " ";
        }
        $out = "";
        for($i = 0; $i < $cnt; $i++)
            $out .= $this->blockEncrypt(substr($excodeStr,$i*16,16), $expandedKeys);

        if($this->toHex)
            $out = $this->toHexString($out);

        return $out;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function blockEncrypt　分块加密
     */
    public function blockEncrypt($in, $keys)
    {
        for ($i = 0; $i < 4; $i++)
            for ($j = 0; $j < $this->Nb; $j++)
                $this->state[$j][$i] = ord($in{$i*4+$j});
        $this->showInt("Cifrado: <br/> State Inicial");
        $this->KeyAddition($keys[0]);

        $this->showInt("Ronda 0 :: KeyAddition");
        for($r = 1; $r < $this->Nr; $r++)
        {
            $this->ByteSubShiftRow();
            $this->showInt("Ronda $r :: ByteSubShiftRow");
            $this->MixColumnKeyAddition($keys[$r]);
            $this->showInt("Ronda $r :: MixColumnKeyAddition");
        }
        $this->ByteSubShiftRow();
        $this->showInt("Ronda final :: ByteSubShiftRow");
        $this->KeyAddition($keys[$this->Nr]);
        $this->showInt("Ronda final :: KeyAddition ==> Resultado");
        $out = "";
        for($i = 0; $i < 4; $i++)
            for ($j = 0; $j < 4; $j++)
                $out .=chr($this->state[$j][$i]);
        return $out;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function: decryptString 解密字符串
     * @param: decodeStr 被解密的字符串
     * @param: expandedKeys 扩展后的密钥
     * @return: 返回解密后的字符串
     */
    public function decryptString($decodeStr, $expandedKeys)
    {
        if($this->toHex)
            $decodeStr = $this->fromHexString($decodeStr);
        if(strlen($decodeStr) % 16 == 0 )
            $cnt = strlen($decodeStr) /16;
        else
            return;
        $out = "";
        for($i = 0; $i < $cnt; $i++)
        {
            $out .= $this->blockDecrypt(substr($decodeStr,$i*16,16),$expandedKeys);
        }
        return trim($out);
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function blockDecrypt 分块解密
     */
    private function blockDecrypt($in, $keys)
    {
        for ($i = 0; $i < 4; $i++)
            for ($j = 0; $j < $this->Nb; $j++)
                $this->state[$j][$i] = ord($in{$i*4+$j});
        $this->showInt("Descifrado: <br/> State Inicial");
        $this->KeyAddition($keys[$this->Nr]);
        $this->showInt("Ronda 0 :: KeyAddition");
        for($r = $this->Nr-1; $r > 0; $r--)
        {
            $this->InvShiftRowInvByteSub();
            $this->showInt("Ronda ". ($this->Nr - $r)." :: InvShiftRowInvByteSub");
            $this->KeyAddition($keys[$r]);
            $this->showInt("Ronda ".($this->Nr - $r)." :: KeyAddition");
            $this->InvMixColumn();
            $this->showInt("Ronda ".($this->Nr - $r)." :: InvMiColumn");
        }
        $this->InvShiftRowInvByteSub();
        $this->showInt("Ronda final :: InvShiftRowInvByteSub");
        $this->KeyAddition($keys[0]);
        $this->showInt("Ronda final :: KeyAddition ==> Resultado");
        $out = "";
        for($i = 0; $i < 4; $i++)
            for ($j = 0; $j < 4; $j++)
                $out .= chr($this->state[$j][$i]);
        return $out;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function ByteSubShiftRow 作用在状态中每个字节上的一种非线性字节转换
     */
    private function ByteSubShiftRow()
    {
        $tmp = array(array());
        for($i = 0; $i < 4; $i++)
            for($j = 0; $j < $this->Nb; $j++)
                $tmp[$i][$this->shifts_r[$i][$j]] = $this->S[$this->state[$i][$j]];
        $this->state = $tmp;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function KeyAddition 将圈密钥状态中的对应字节按位"异或"
     */
    private function KeyAddition($rk)
    {
        for($i = 0; $i < 4; $i++)
            for($j = 0; $j < $this->Nb; $j++)
                $this->state[$i][$j] ^= $rk[$i][$j];
    }

    /////////////////////////////////////////////////////////////////
    /* 
     * @function InvShiftRowInvByteSub 作用在状态中每个字节上的一种非线性字节反转换，与ByteSubShiftRow()互逆
     */
    private function InvShiftRowInvByteSub()
    {
        $tmp = array(array());
        for($i = 0; $i < 4; $i++)
            for($j = 0; $j < $this->Nb; $j++)
                $tmp[$i][$this->shifts_l[$i][$j]] = $this->Si[$this->state[$i][$j]];
        $this->state = $tmp;
    }

    //////////////////////////////////////////////////////////////////
    /*
     * @function MixColumnKeyAddition 混合列变换
     */
    private function MixColumnKeyAddition($rk)
    {
        $b = array(array());
        for($j = 0; $j < 4; $j++)
            for($i = 0; $i < $this->Nb; $i++)
            {
                $b[$i][$j] = $this->T2[$this->state[$i][$j]] ^  $this->T3[$this->state[($i + 1) % 4][$j]] ^ $this->state[($i + 2) % 4][$j] ^ $this->state[($i + 3) % 4][$j];
                $b[$i][$j] ^= $rk[$i][$j];
            }
        $this->state = $b;
    }
    //////////////////////////////////////////////////////////////////
    /* 
     * @function InvMixColumn 混合列逆变换
     */
    private function InvMixColumn()
    {
        $b = array(array());
        for($j = 0; $j < 4; $j++)
            for($i = 0; $i < $this->Nb; $i++)
                $b[$i][$j] = $this->T14[$this->state[$i][$j]] ^ $this->T11[$this->state[($i + 1) % 4][$j]] ^ $this->T13[$this->state[($i + 2) % 4][$j]] ^ $this->T9[$this->state[($i + 3) % 4][$j]];
        $this->state = $b;
    }
    //////////////////////////////////////////////////////////////////
    /*
     * @function encryptFile
     * @param：sourcePath 文件所在目录的绝对路径
     * @param: filename 被加密的文件名称
     * @param: expandKeys 扩展后的密钥
     * @param：destPath 存放加密后的文件绝对路径
     * @param: encodeFile 加密后的文件名称
     * @return: boolean
     */
    public function encryptFile($sourcePath, $filename, $expandKeys, $destPath = "", $encodeFile = "")
    {
        $destPath = $sourcePath;
        $encodeFile = "en".$filename;
    }
    public static function encode($str,$key){
        $aes = new Aes(true);// 把加密后的字符串按十六进制进行存储
        $keys = $aes->makeKey($key);
        return $aes->encryptString($str, $keys);
    }
    public static function decode($str,$key){
        $aes = new Aes(true);// 把加密后的字符串按十六进制进行存储
        $keys = $aes->makeKey($key);
        return $aes->decryptString($str, $keys);
    }


}

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<?PHP

* @filename: AES.php

* @author: Jessica.yang

* @data: 2007.07.20

* @note: In version 4 of PHP, the function "__construct" is not executed, and it doesn't approve the private key words.

class Aes{

var $rcon = array (

0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,

0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4,

0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91);

// S盒变换

var $S = array(

99, 124, 119, 123, 242, 107, 111, 197, 48, 1, 103, 43, 254, 215, 171, 118,

202, 130, 201, 125, 250, 89, 71, 240, 173, 212, 162, 175, 156, 164, 114, 192,

183, 253, 147, 38, 54, 63, 247, 204, 52, 165, 229, 241, 113, 216, 49, 21,

4, 199, 35, 195, 24, 150, 5, 154, 7, 18, 128, 226, 235, 39, 178, 117,

9, 131, 44, 26, 27, 110, 90, 160, 82, 59, 214, 179, 41, 227, 47, 132,

83, 209, 0, 237, 32, 252, 177, 91, 106, 203, 190, 57, 74, 76, 88, 207,

208, 239, 170, 251, 67, 77, 51, 133, 69, 249, 2, 127, 80, 60, 159, 168,

81, 163, 64, 143, 146, 157, 56, 245, 188, 182, 218, 33, 16, 255, 243, 210,

205, 12, 19, 236, 95, 151, 68, 23, 196, 167, 126, 61, 100, 93, 25, 115,

96, 129, 79, 220, 34, 42, 144, 136, 70, 238, 184, 20, 222, 94, 11, 219,

224, 50, 58, 10, 73, 6, 36, 92, 194, 211, 172, 98, 145, 149, 228, 121,

231, 200, 55, 109, 141, 213, 78, 169, 108, 86, 244, 234, 101, 122, 174, 8,

186, 120, 37, 46, 28, 166, 180, 198, 232, 221, 116, 31, 75, 189, 139, 138,

112, 62, 181, 102, 72, 3, 246, 14, 97, 53, 87, 185, 134, 193, 29, 158,

225, 248, 152, 17, 105, 217, 142, 148, 155, 30, 135, 233, 206, 85, 40, 223,

140, 161, 137, 13, 191, 230, 66, 104, 65, 153, 45, 15, 176, 84, 187, 22

);

// S盒逆变换

var $Si = array(

82, 9, 106, 213, 48, 54, 165, 56, 191, 64, 163, 158, 129, 243, 215, 251,

124, 227, 57, 130, 155, 47, 255, 135, 52, 142, 67, 68, 196, 222, 233, 203,

84, 123, 148, 50, 166, 194, 35, 61, 238, 76, 149, 11, 66, 250, 195, 78,

8, 46, 161, 102, 40, 217, 36, 178, 118, 91, 162, 73, 109, 139, 209, 37,

114, 248, 246, 100, 134, 104, 152, 22, 212, 164, 92, 204, 93, 101, 182, 146,

108, 112, 72, 80, 253, 237, 185, 218, 94, 21, 70, 87, 167, 141, 157, 132,

144, 216, 171, 0, 140, 188, 211, 10, 247, 228, 88, 5, 184, 179, 69, 6,

208, 44, 30, 143, 202, 63, 15, 2, 193, 175, 189, 3, 1, 19, 138, 107,

58, 145, 17, 65, 79, 103, 220, 234, 151, 242, 207, 206, 240, 180, 230, 115,

150, 172, 116, 34, 231, 173, 53, 133, 226, 249, 55, 232, 28, 117, 223, 110,

71, 241, 26, 113, 29, 41, 197, 137, 111, 183, 98, 14, 170, 24, 190, 27,

252, 86, 62, 75, 198, 210, 121, 32, 154, 219, 192, 254, 120, 205, 90, 244,

31, 221, 168, 51, 136, 7, 199, 49, 177, 18, 16, 89, 39, 128, 236, 95,

96, 81, 127, 169, 25, 181, 74, 13, 45, 229, 122, 159, 147, 201, 156, 239,

160, 224, 59, 77, 174, 42, 245, 176, 200, 235, 187, 60, 131, 83, 153, 97,

23, 43, 4, 126, 186, 119, 214, 38, 225, 105, 20, 99, 85, 33, 12, 125

);

// 线性混合层列变换矩阵

var $T2 = array(

0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,

32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62,

64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94,

96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126,

128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158,

160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186, 188, 190,

192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 220, 222,

224, 226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 248, 250, 252, 254,

27, 25, 31, 29, 19, 17, 23, 21,

11, 9, 15, 13, 3, 1, 7, 5, 59, 57, 63, 61, 51, 49, 55,

53, 43, 41, 47, 45, 35, 33, 39, 37, 91, 89, 95, 93, 83, 81,

87, 85, 75, 73, 79, 77, 67, 65, 71, 69, 123, 121, 127, 125, 115,

113, 119, 117, 107, 105, 111, 109, 99, 97, 103, 101, 155, 153, 159, 157,

147, 145, 151, 149, 139, 137, 143, 141, 131, 129, 135, 133, 187, 185, 191,

189, 179, 177, 183, 181, 171, 169, 175, 173, 163, 161, 167, 165, 219, 217,

223, 221, 211, 209, 215, 213, 203, 201, 207, 205, 195, 193, 199, 197, 251,

249, 255, 253, 243, 241, 247, 245, 235, 233, 239, 237, 227, 225, 231, 229 );

var $T3 = array(

0, 3, 6, 5, 12, 15, 10, 9, 24, 27, 30, 29, 20, 23, 18, 17,

48, 51, 54, 53, 60, 63, 58, 57, 40, 43, 46, 45, 36, 39, 34,

33, 96, 99, 102, 101, 108, 111, 106, 105, 120, 123, 126, 125, 116, 119,

114, 113, 80, 83, 86, 85, 92, 95, 90, 89, 72, 75, 78, 77, 68,

71, 66, 65, 192, 195, 198, 197, 204, 207, 202, 201, 216, 219, 222, 221,

212, 215, 210, 209, 240, 243, 246, 245, 252, 255, 250, 249, 232, 235, 238,

237, 228, 231, 226, 225, 160, 163, 166, 165, 172, 175, 170, 169, 184, 187,

190, 189, 180, 183, 178, 177, 144, 147, 150, 149, 156, 159, 154, 153, 136,

139, 142, 141, 132, 135, 130, 129, 155, 152, 157, 158, 151, 148, 145, 146,

131, 128, 133, 134, 143, 140, 137, 138, 171, 168, 173, 174, 167, 164, 161,

162, 179, 176, 181, 182, 191, 188, 185, 186, 251, 248, 253, 254, 247, 244,

241, 242, 227, 224, 229, 230, 239, 236, 233, 234, 203, 200, 205, 206, 199,

196, 193, 194, 211, 208, 213, 214, 223, 220, 217, 218, 91, 88, 93, 94,

87, 84, 81, 82, 67, 64, 69, 70, 79, 76, 73, 74, 107, 104, 109,

110, 103, 100, 97, 98, 115, 112, 117, 118, 127, 124, 121, 122, 59, 56,

61, 62, 55, 52, 49, 50, 35, 32, 37, 38, 47, 44, 41, 42, 11,

8, 13, 14, 7, 4, 1, 2, 19, 16, 21, 22, 31, 28, 25, 26 );

// 线性混合层列变换逆矩阵

var $T9 = array(

0, 9, 18, 27, 36, 45, 54, 63, 72, 65, 90, 83, 108, 101, 126, 119,

144, 153, 130, 139, 180, 189, 166, 175, 216, 209, 202, 195, 252, 245, 238,

231, 59, 50, 41, 32, 31, 22, 13, 4, 115, 122, 97, 104, 87, 94,

69, 76, 171, 162, 185, 176, 143, 134, 157, 148, 227, 234, 241, 248, 199,

206, 213, 220, 118, 127, 100, 109, 82, 91, 64, 73, 62, 55, 44, 37,

26, 19, 8, 1, 230, 239, 244, 253, 194, 203, 208, 217, 174, 167, 188,

181, 138, 131, 152, 145, 77, 68, 95, 86, 105, 96, 123, 114, 5, 12,

23, 30, 33, 40, 51, 58, 221, 212, 207, 198, 249, 240, 235, 226, 149,

156, 135, 142, 177, 184, 163, 170, 236, 229, 254, 247, 200, 193, 218, 211,

164, 173, 182, 191, 128, 137, 146, 155, 124, 117, 110, 103, 88, 81, 74,

67, 52, 61, 38, 47, 16, 25, 2, 11, 215, 222, 197, 204, 243, 250,

225, 232, 159, 150, 141, 132, 187, 178, 169, 160, 71, 78, 85, 92, 99,

106, 113, 120, 15, 6, 29, 20, 43, 34, 57, 48, 154, 147, 136, 129,

190, 183, 172, 165, 210, 219, 192, 201, 246, 255, 228, 237, 10, 3, 24,

17, 46, 39, 60, 53, 66, 75, 80, 89, 102, 111, 116, 125, 161, 168,

179, 186, 133, 140, 151, 158, 233, 224, 251, 242, 205, 196, 223, 214, 49,

56, 35, 42, 21, 28, 7, 14, 121, 112, 107, 98, 93, 84, 79, 70);

/* Definicion de 0x0b*state[i][j] en GF(2^8)(para InvMixColumns)*/

var $T11 = array(

0, 11, 22, 29, 44, 39, 58, 49, 88, 83, 78, 69, 116, 127, 98, 105,

176, 187, 166, 173, 156, 151, 138, 129, 232, 227, 254, 245, 196, 207, 210,

217, 123, 112, 109, 102, 87, 92, 65, 74, 35, 40, 53, 62, 15, 4,

25, 18, 203, 192, 221, 214, 231, 236, 241, 250, 147, 152, 133, 142, 191,

180, 169, 162, 246, 253, 224, 235, 218, 209, 204, 199, 174, 165, 184, 179,

130, 137, 148, 159, 70, 77, 80, 91, 106, 97, 124, 119, 30, 21, 8,

3, 50, 57, 36, 47, 141, 134, 155, 144, 161, 170, 183, 188, 213, 222,

195, 200, 249, 242, 239, 228, 61, 54, 43, 32, 17, 26, 7, 12, 101,

110, 115, 120, 73, 66, 95, 84, 247, 252, 225, 234, 219, 208, 205, 198,

175, 164, 185, 178, 131, 136, 149, 158, 71, 76, 81, 90, 107, 96, 125,

118, 31, 20, 9, 2, 51, 56, 37, 46, 140, 135, 154, 145, 160, 171,

182, 189, 212, 223, 194, 201, 248, 243, 238, 229, 60, 55, 42, 33, 16,

27, 6, 13, 100, 111, 114, 121, 72, 67, 94, 85, 1, 10, 23, 28,

45, 38, 59, 48, 89, 82, 79, 68, 117, 126, 99, 104, 177, 186, 167,

172, 157, 150, 139, 128, 233, 226, 255, 244, 197, 206, 211, 216, 122, 113,

108, 103, 86, 93, 64, 75, 34, 41, 52, 63, 14, 5, 24, 19, 202,

193, 220, 215, 230, 237, 240, 251, 146, 153, 132, 143, 190, 181, 168, 163);

/* Definicion de 0x0d*state[i][j] en GF(2^8) (para InvMixColumns)*/

var $T13 = array(

0, 13, 26, 23, 52, 57, 46, 35, 104, 101, 114, 127, 92, 81, 70, 75,

208, 221, 202, 199, 228, 233, 254, 243, 184, 181, 162, 175, 140, 129, 150,

155, 187, 182, 161, 172, 143, 130, 149, 152, 211, 222, 201, 196, 231, 234,

253, 240, 107, 102, 113, 124, 95, 82, 69, 72, 3, 14, 25, 20, 55,

58, 45, 32, 109, 96, 119, 122, 89, 84, 67, 78, 5, 8, 31, 18,

49, 60, 43, 38, 189, 176, 167, 170, 137, 132, 147, 158, 213, 216, 207,

194, 225, 236, 251, 246, 214, 219, 204, 193, 226, 239, 248, 245, 190, 179,

164, 169, 138, 135, 144, 157, 6, 11, 28, 17, 50, 63, 40, 37, 110,

99, 116, 121, 90, 87, 64, 77, 218, 215, 192, 205, 238, 227, 244, 249,

178, 191, 168, 165, 134, 139, 156, 145, 10, 7, 16, 29, 62, 51, 36,

41, 98, 111, 120, 117, 86, 91, 76, 65, 97, 108, 123, 118, 85, 88,

79, 66, 9, 4, 19, 30, 61, 48, 39, 42, 177, 188, 171, 166, 133,

136, 159, 146, 217, 212, 195, 206, 237, 224, 247, 250, 183, 186, 173, 160,

131, 142, 153, 148, 223, 210, 197, 200, 235, 230, 241, 252, 103, 106, 125,

112, 83, 94, 73, 68, 15, 2, 21, 24, 59, 54, 33, 44, 12, 1,

22, 27, 56, 53, 34, 47, 100, 105, 126, 115, 80, 93, 74, 71, 220,

209, 198, 203, 232, 229, 242, 255, 180, 185, 174, 163, 128, 141, 154, 151);

var $T14 = array (

0, 14, 28, 18, 56, 54, 36, 42, 112, 126, 108, 98, 72, 70, 84, 90,

224, 238, 252, 242, 216, 214, 196, 202, 144, 158, 140, 130, 168, 166, 180,

186, 219, 213, 199, 201, 227, 237, 255, 241, 171, 165, 183, 185, 147, 157,

143, 129, 59, 53, 39, 41, 3, 13, 31, 17, 75, 69, 87, 89, 115,

125, 111, 97, 173, 163, 177, 191, 149, 155, 137, 135, 221, 211, 193, 207,

229, 235, 249, 247, 77, 67, 81, 95, 117, 123, 105, 103, 61, 51, 33,

47, 5, 11, 25, 23, 118, 120, 106, 100, 78, 64, 82, 92, 6, 8,

26, 20, 62, 48, 34, 44, 150, 152, 138, 132, 174, 160, 178, 188, 230,

232, 250, 244, 222, 208, 194, 204, 65, 79, 93, 83, 121, 119, 101, 107,

49, 63, 45, 35, 9, 7, 21, 27, 161, 175, 189, 179, 153, 151, 133,

139, 209, 223, 205, 195, 233, 231, 245, 251, 154, 148, 134, 136, 162, 172,

190, 176, 234, 228, 246, 248, 210, 220, 206, 192, 122, 116, 102, 104, 66,

76, 94, 80, 10, 4, 22, 24, 50, 60, 46, 32, 236, 226, 240, 254,

212, 218, 200, 198, 156, 146, 128, 142, 164, 170, 184, 182, 12, 2, 16,

30, 52, 58, 40, 38, 124, 114, 96, 110, 68, 74, 88, 86, 55, 57,

43, 37, 15, 1, 19, 29, 71, 73, 91, 85, 127, 113, 99, 109, 215,

217, 203, 197, 239, 225, 243, 253, 167, 169, 187, 181, 159, 145, 131, 141);

var $Nr = 10;// 轮变换圈数

var $Nb = 4;// 存放中间结果状态的矩阵列数

var $Nk = 4;

var $state = array(array());// 存放中间结果状态

var $shifts_r = array(array(0, 1, 2, 3),array(3, 0, 1, 2),array(2, 3, 0, 1),array(1, 2, 3, 0));

var $shifts_l = array(array(0, 1, 2, 3),array(1, 2, 3, 0),array(2, 3, 0, 1),array(3, 0, 1, 2));

var $debug = false;

var $toHex = false;

* 构造函数

* @param: hex 结果是否以十六进制显示，true：显示

* @param: debug 是否打印调试信息 true：打印调试信息

function AES($hex = false, $debug = false)

{

$this->debug = $debug;

$this->toHex = $hex;

}

//////////////////////////////////////////////////////////////////

* @function toHexString 把字符串中的每个字符转换成十六进制数

private function toHexString ($sa)

{

$buf = "";

for ($i = 0; $i < strlen($sa); $i++)

{

$val = dechex(ord($sa{$i}));

if(strlen($val)< 2)

$val = "0".$val;

$buf .= $val;

}

return $buf;

}

//////////////////////////////////////////////////////////////////

* @function fromHexString 把十六进制数转换成字符串

private function fromHexString($sa)

{

$buf = "";

for($i = 0; $i < strlen($sa); $i += 2)

{

$val = chr(hexdec(substr($sa, $i, 2)));

$buf .= $val;

}

return $buf;

}

//////////////////////////////////////////////////////////////////

* @function showInt 输出调试信息

private function showInt($texto)

{

if($this->debug)

{

echo($texto.": ");

for($i = 0; $i<4; $i++)

{

for($j = 0; $j<4; $j++)

{

echo(dechex($this->state[$j][$i])." ");

}

echo ("<br/>");

}

//////////////////////////////////////////////////////////////////

* @function makeKey 密钥扩展(128bit)

* @param hash　密钥

* @return array　返回三维数组

public function makeKey($hash)

{

if(strlen($hash) < 16)

for($i = strlen($hash); $i < 16; $i++)

$hash .= " ";

$rconpocharer = 0;

$tk = array(array());;

$rk = array(array(array()));

for($j = 0; $j < $this->Nk; $j++)

for($i = 0; $i < 4; $i++)

$tk[$i][$j] = ord($hash[$j*4+$i]) > 256 ? ord($hash[$j*4+$i])%256 : ord($hash[$j*4+$i]);// 转换成ASCII码值

$t = 0;

for($j = 0; ($j < $this->Nk) && ($t < ($this->Nr+1)*$this->Nb); $j++, $t++)

for($i = 0; $i < 4; $i++)

$rk[$t / $this->Nb][$i][$t % $this->Nb] = $tk[$i][$j];

while ($t < ($this->Nr+1)*$this->Nb)

{

for($i = 0; $i < 4; $i++)

$tk[$i][0] ^= $this->S[$tk[($i+1)%4][$this->Nk-1]];

$tk[0][0] ^= $this->rcon[$rconpocharer++];

for($j = 1; $j < $this->Nk; $j++)

for($i = 0; $i < 4; $i++)

$tk[$i][$j] ^= $tk[$i][$j-1];

for($j = 0; ($j < $this->Nk) && ($t < ($this->Nr+1)*$this->Nb); $j++, $t++)

for($i = 0; $i < 4; $i++)

$rk[$t / $this->Nb][$i][$t % $this->Nb] = $tk[$i][$j];

}

return $rk;

}

//////////////////////////////////////////////////////////////////

* @function: encryptString 加密字符串

* @param: excodeStr 被加密的字符串

* @param: expandedKeys 扩展后的密钥

* @return: 返回加密后的字符串

public function encryptString($excodeStr, $expandedKeys)

{

if(strlen($excodeStr) % 16 == 0 )

$cnt = strlen($excodeStr) /16;

else

{

$cnt = ceil(strlen($excodeStr) /16);

for($i = strlen($excodeStr); $i < $cnt *16; $i++)

$excodeStr .= " ";

}

$out = "";

for($i = 0; $i < $cnt; $i++)

$out .= $this->blockEncrypt(substr($excodeStr,$i*16,16), $expandedKeys);

if($this->toHex)

$out = $this->toHexString($out);

return $out;

}

//////////////////////////////////////////////////////////////////

* @function blockEncrypt　分块加密

public function blockEncrypt($in, $keys)

{

for ($i = 0; $i < 4; $i++)

for ($j = 0; $j < $this->Nb; $j++)

$this->state[$j][$i] = ord($in{$i*4+$j});

$this->showInt("Cifrado: <br/> State Inicial");

$this->KeyAddition($keys[0]);

$this->showInt("Ronda 0 :: KeyAddition");

for($r = 1; $r < $this->Nr; $r++)

{

$this->ByteSubShiftRow();

$this->showInt("Ronda $r :: ByteSubShiftRow");

$this->MixColumnKeyAddition($keys[$r]);

$this->showInt("Ronda $r :: MixColumnKeyAddition");

}

$this->ByteSubShiftRow();

$this->showInt("Ronda final :: ByteSubShiftRow");

$this->KeyAddition($keys[$this->Nr]);

$this->showInt("Ronda final :: KeyAddition ==> Resultado");

$out = "";

for($i = 0; $i < 4; $i++)

for ($j = 0; $j < 4; $j++)

$out .=chr($this->state[$j][$i]);

return $out;

}

//////////////////////////////////////////////////////////////////

* @function: decryptString 解密字符串

* @param: decodeStr 被解密的字符串

* @param: expandedKeys 扩展后的密钥

* @return: 返回解密后的字符串

public function decryptString($decodeStr, $expandedKeys)

{

if($this->toHex)

$decodeStr = $this->fromHexString($decodeStr);

if(strlen($decodeStr) % 16 == 0 )

$cnt = strlen($decodeStr) /16;

else

return;

$out = "";

for($i = 0; $i < $cnt; $i++)

{

$out .= $this->blockDecrypt(substr($decodeStr,$i*16,16),$expandedKeys);

}

return trim($out);

}

//////////////////////////////////////////////////////////////////

* @function blockDecrypt 分块解密

private function blockDecrypt($in, $keys)

{

for ($i = 0; $i < 4; $i++)

for ($j = 0; $j < $this->Nb; $j++)

$this->state[$j][$i] = ord($in{$i*4+$j});

$this->showInt("Descifrado: <br/> State Inicial");

$this->KeyAddition($keys[$this->Nr]);

$this->showInt("Ronda 0 :: KeyAddition");

for($r = $this->Nr-1; $r > 0; $r--)

{

$this->InvShiftRowInvByteSub();

$this->showInt("Ronda ". ($this->Nr - $r)." :: InvShiftRowInvByteSub");

$this->KeyAddition($keys[$r]);

$this->showInt("Ronda ".($this->Nr - $r)." :: KeyAddition");

$this->InvMixColumn();

$this->showInt("Ronda ".($this->Nr - $r)." :: InvMiColumn");

}

$this->InvShiftRowInvByteSub();

$this->showInt("Ronda final :: InvShiftRowInvByteSub");

$this->KeyAddition($keys[0]);

$this->showInt("Ronda final :: KeyAddition ==> Resultado");

$out = "";

for($i = 0; $i < 4; $i++)

for ($j = 0; $j < 4; $j++)

$out .= chr($this->state[$j][$i]);

return $out;

}

//////////////////////////////////////////////////////////////////

* @function ByteSubShiftRow 作用在状态中每个字节上的一种非线性字节转换

private function ByteSubShiftRow()

{

$tmp = array(array());

for($i = 0; $i < 4; $i++)

for($j = 0; $j < $this->Nb; $j++)

$tmp[$i][$this->shifts_r[$i][$j]] = $this->S[$this->state[$i][$j]];

$this->state = $tmp;

}

//////////////////////////////////////////////////////////////////

* @function KeyAddition 将圈密钥状态中的对应字节按位"异或"

private function KeyAddition($rk)

{

for($i = 0; $i < 4; $i++)

for($j = 0; $j < $this->Nb; $j++)

$this->state[$i][$j] ^= $rk[$i][$j];

}

/////////////////////////////////////////////////////////////////

* @function InvShiftRowInvByteSub 作用在状态中每个字节上的一种非线性字节反转换，与ByteSubShiftRow()互逆

private function InvShiftRowInvByteSub()

{

$tmp = array(array());

for($i = 0; $i < 4; $i++)

for($j = 0; $j < $this->Nb; $j++)

$tmp[$i][$this->shifts_l[$i][$j]] = $this->Si[$this->state[$i][$j]];

$this->state = $tmp;

}

//////////////////////////////////////////////////////////////////

* @function MixColumnKeyAddition 混合列变换

private function MixColumnKeyAddition($rk)

{

$b = array(array());

for($j = 0; $j < 4; $j++)

for($i = 0; $i < $this->Nb; $i++)

{

$b[$i][$j] = $this->T2[$this->state[$i][$j]] ^ $this->T3[$this->state[($i + 1) % 4][$j]] ^ $this->state[($i + 2) % 4][$j] ^ $this->state[($i + 3) % 4][$j];

$b[$i][$j] ^= $rk[$i][$j];

}

$this->state = $b;

}

//////////////////////////////////////////////////////////////////

* @function InvMixColumn 混合列逆变换

private function InvMixColumn()

{

$b = array(array());

for($j = 0; $j < 4; $j++)

for($i = 0; $i < $this->Nb; $i++)

$b[$i][$j] = $this->T14[$this->state[$i][$j]] ^ $this->T11[$this->state[($i + 1) % 4][$j]] ^ $this->T13[$this->state[($i + 2) % 4][$j]] ^ $this->T9[$this->state[($i + 3) % 4][$j]];

$this->state = $b;

}

//////////////////////////////////////////////////////////////////

* @function encryptFile

* @param：sourcePath 文件所在目录的绝对路径

* @param: filename 被加密的文件名称

* @param: expandKeys 扩展后的密钥

* @param：destPath 存放加密后的文件绝对路径

* @param: encodeFile 加密后的文件名称

* @return: boolean

public function encryptFile($sourcePath, $filename, $expandKeys, $destPath = "", $encodeFile = "")

{

$destPath = $sourcePath;

$encodeFile = "en".$filename;

}

public static function encode($str,$key){

$aes = new Aes(true);// 把加密后的字符串按十六进制进行存储

$keys = $aes->makeKey($key);

return $aes->encryptString($str, $keys);

}

public static function decode($str,$key){

$aes = new Aes(true);// 把加密后的字符串按十六进制进行存储

$keys = $aes->makeKey($key);

return $aes->decryptString($str, $keys);

}

实例代码：

<?php
/*
 * @author: http://www.phperblog.cn
 * @data: 2016.08.12
 */

date_default_timezone_set('PRC');
header("Content-type:text/html;charset=utf-8");
//$aes = new AES(true);// 把加密后的字符串按十六进制进行存储
$aes = new AES(true,true);// 带有调试信息且加密字符串按十六进制存储
$key = "2016081213!#%*<&>?";// 密钥
$keys = $aes->makeKey($key);

$encode = 'id=88&name=nickname';// 被加密的字符串
$ct = $aes->encode($encode, $keys);

echo "encode 是: ".$ct."<br>";
$cpt = $aes->decode($ct, $keys);
echo "decode 是: ".$cpt;

<?php

* @author: http://www.phperblog.cn

* @data: 2016.08.12

date_default_timezone_set('PRC');

header("Content-type:text/html;charset=utf-8");

//$aes = new AES(true);// 把加密后的字符串按十六进制进行存储

$aes = new AES(true,true);// 带有调试信息且加密字符串按十六进制存储

$key = "2016081213!#%*<&>?";// 密钥

$keys = $aes->makeKey($key);

$encode = 'id=88&name=nickname';// 被加密的字符串

$ct = $aes->encode($encode, $keys);

echo "encode 是: ".$ct."<br>";

$cpt = $aes->decode($ct, $keys);

echo "decode 是: ".$cpt;

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Tagged on: php对称加密案例, 加密案例

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PHP对称加密类及案例