接口des加密?
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接口des加密?

接口上要做des加密,不太懂,求指点,求推荐一些des加密的资料


其实是想找到兼容四个端的通用的,目前找到一篇PHP、JAVA、C#、Object-C 通用的DES加密,我自己试了一试,php加密的内容,安卓、IOS都解得开,只是当加密的内容含中文的时候移动端就会报错,貌似原文章评论说ios加密长数据会有报错,不过具体怎么样我就不太清楚了,因为我没遇到这错误==

ThinkPHP的DES算法

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright c 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed  http://www.apache.org/licenses/LICENSE-2.0 
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Crypt\Driver;
/**
 * Des 加密实现类
 * Converted from JavaScript to PHP by Jim Gibbs, June 2004 Paul Tero, July 2001
 * Optimised for performance with large blocks by Michael Hayworth, November 2001
 * http://www.netdealing.com
 */

class Des {

    /**
     * 加密字符串
     * @param string $str 字符串
     * @param string $key 加密key
     * @param integer $expire 有效期(秒)     
     * @return string
     */
    public static function encrypt$str, $key,$expire=0 {
        if $str == "" {
            return "";
        }
        $expire = sprintf%010d, $expire ? $expire + time:0;
        $str    =   $expire.$str;
        return self::_des$key,$str,1;
    }

    /**
     * 解密字符串
     * @param string $str 字符串
     * @param string $key 加密key
     * @return string
     */
    public static function decrypt$str, $key {
        if $str == "" {
            return "";
        }
        $data   =    self::_des$key,$str,0;
        $expire = substr$data,0,10;
        if$expire > 0 && $expire < time {
            return ;
        }
        $data   = substr$data,10;
        return $data;
    }

    /**
     * Des算法
     * @param string $str 字符串
     * @param string $key 加密key
     * @return string
     */
    private static function _des$key, $message, $encrypt, $mode=0, $iv=null {
      //declaring this locally speeds things up a bit
      $spfunction1 = array 0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000,0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0,0x404,0x10404,0x1000000,0x10000,0x1010404,0x4,0x1010000,0x1010400,0x1000000,0x1000000,0x400,0x1010004,0x10000,0x10400,0x1000004,0x400,0x4,0x1000404,0x10404,0x1010404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x10404,0x1010400,0x404,0x1000400,0x1000400,0,0x10004,0x10400,0,0x1010004;
      $spfunction2 = array -0x7fef7fe0,-0x7fff8000,0x8000,0x108020,0x100000,0x20,-0x7fefffe0,-0x7fff7fe0,-0x7fffffe0,-0x7fef7fe0,-0x7fef8000,-0x80000000,-0x7fff8000,0x100000,0x20,-0x7fefffe0,0x108000,0x100020,-0x7fff7fe0,0,-0x80000000,0x8000,0x108020,-0x7ff00000,0x100020,-0x7fffffe0,0,0x108000,0x8020,-0x7fef8000,-0x7ff00000,0x8020,0,0x108020,-0x7fefffe0,0x100000,-0x7fff7fe0,-0x7ff00000,-0x7fef8000,0x8000,-0x7ff00000,-0x7fff8000,0x20,-0x7fef7fe0,0x108020,0x20,0x8000,-0x80000000,0x8020,-0x7fef8000,0x100000,-0x7fffffe0,0x100020,-0x7fff7fe0,-0x7fffffe0,0x100020,0x108000,0,-0x7fff8000,0x8020,-0x80000000,-0x7fefffe0,-0x7fef7fe0,0x108000;
      $spfunction3 = array 0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000,0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0,0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200;
      $spfunction4 = array 0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000,0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081,0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080;
      $spfunction5 = array 0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100,0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000,0x42080000,0x42080100,0x80100,0x42000000,0x42080100,0x2080000,0,0x40080000,0x42000000,0x80100,0x2000100,0x40000100,0x80000,0,0x40080000,0x2080100,0x40000100;
      $spfunction6 = array 0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010,0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000,0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010;
      $spfunction7 = array 0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002;
      $spfunction8 = array 0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000;
      $masks = array 4294967295,2147483647,1073741823,536870911,268435455,134217727,67108863,33554431,16777215,8388607,4194303,2097151,1048575,524287,262143,131071,65535,32767,16383,8191,4095,2047,1023,511,255,127,63,31,15,7,3,1,0;

      //create the 16 or 48 subkeys we will need
      $keys = self::_createKeys $key;
      $m=0;
      $len = strlen$message;
      $chunk = 0;
      //set up the loops for single and triple des
      $iterations = count$keys == 32 ? 3 : 9; //single or triple des
      if $iterations == 3 {$looping = $encrypt ? array 0, 32, 2 : array 30, -2, -2;}
      else {$looping = $encrypt ? array 0, 32, 2, 62, 30, -2, 64, 96, 2 : array 94, 62, -2, 32, 64, 2, 30, -2, -2;}

      $message .= chr0 . chr0 . chr0 . chr0 . chr0 . chr0 . chr0 . chr0; //pad the message out with null bytes
      //store the result here
      $result = "";
      $tempresult = "";

      if $mode == 1 { //CBC mode
        $cbcleft = ord$iv{$m++} << 24 | ord$iv{$m++} << 16 | ord$iv{$m++} << 8 | ord$iv{$m++};
        $cbcright = ord$iv{$m++} << 24 | ord$iv{$m++} << 16 | ord$iv{$m++} << 8 | ord$iv{$m++};
        $m=0;
      }

      //loop through each 64 bit chunk of the message
      while $m < $len {
        $left = ord$message{$m++} << 24 | ord$message{$m++} << 16 | ord$message{$m++} << 8 | ord$message{$m++};
        $right = ord$message{$m++} << 24 | ord$message{$m++} << 16 | ord$message{$m++} << 8 | ord$message{$m++};

        //for Cipher Block Chaining mode, xor the message with the previous result
        if $mode == 1 {if $encrypt {$left ^= $cbcleft; $right ^= $cbcright;} else {$cbcleft2 = $cbcleft; $cbcright2 = $cbcright; $cbcleft = $left; $cbcright = $right;}}

        //first each 64 but chunk of the message must be permuted according to IP
        $temp = $left >> 4 & $masks[4] ^ $right & 0x0f0f0f0f; $right ^= $temp; $left ^= $temp << 4;
        $temp = $left >> 16 & $masks[16] ^ $right & 0x0000ffff; $right ^= $temp; $left ^= $temp << 16;
        $temp = $right >> 2 & $masks[2] ^ $left & 0x33333333; $left ^= $temp; $right ^= $temp << 2;
        $temp = $right >> 8 & $masks[8] ^ $left & 0x00ff00ff; $left ^= $temp; $right ^= $temp << 8;
        $temp = $left >> 1 & $masks[1] ^ $right & 0x55555555; $right ^= $temp; $left ^= $temp << 1;

        $left = $left << 1 | $left >> 31 & $masks[31];
        $right = $right << 1 | $right >> 31 & $masks[31];

        //do this either 1 or 3 times for each chunk of the message
        for $j=0; $j<$iterations; $j+=3 {
          $endloop = $looping[$j+1];
          $loopinc = $looping[$j+2];
          //now go through and perform the encryption or decryption
          for $i=$looping[$j]; $i!=$endloop; $i+=$loopinc { //for efficiency
            $right1 = $right ^ $keys[$i];
            $right2 = $right >> 4 & $masks[4] | $right << 28 ^ $keys[$i+1];
            //the result is attained by passing these bytes through the S selection functions
            $temp = $left;
            $left = $right;
            $right = $temp ^ $spfunction2[$right1 >> 24 & $masks[24] & 0x3f] | $spfunction4[$right1 >> 16 & $masks[16] & 0x3f]
                  | $spfunction6[$right1 >>  8 & $masks[8] & 0x3f] | $spfunction8[$right1 & 0x3f]
                  | $spfunction1[$right2 >> 24 & $masks[24] & 0x3f] | $spfunction3[$right2 >> 16 & $masks[16] & 0x3f]
                  | $spfunction5[$right2 >>  8 & $masks[8] & 0x3f] | $spfunction7[$right2 & 0x3f];
          }
          $temp = $left; $left = $right; $right = $temp; //unreverse left and right
        } //for either 1 or 3 iterations

        //move then each one bit to the right
        $left = $left >> 1 & $masks[1] | $left << 31;
        $right = $right >> 1 & $masks[1] | $right << 31;

        //now perform IP-1, which is IP in the opposite direction
        $temp = $left >> 1 & $masks[1] ^ $right & 0x55555555; $right ^= $temp; $left ^= $temp << 1;
        $temp = $right >> 8 & $masks[8] ^ $left & 0x00ff00ff; $left ^= $temp; $right ^= $temp << 8;
        $temp = $right >> 2 & $masks[2] ^ $left & 0x33333333; $left ^= $temp; $right ^= $temp << 2;
        $temp = $left >> 16 & $masks[16] ^ $right & 0x0000ffff; $right ^= $temp; $left ^= $temp << 16;
        $temp = $left >> 4 & $masks[4] ^ $right & 0x0f0f0f0f; $right ^= $temp; $left ^= $temp << 4;

        //for Cipher Block Chaining mode, xor the message with the previous result
        if $mode == 1 {if $encrypt {$cbcleft = $left; $cbcright = $right;} else {$left ^= $cbcleft2; $right ^= $cbcright2;}}
        $tempresult .= chr$left>>24 & $masks[24] . chr$left>>16 & $masks[16] & 0xff . chr$left>>8 & $masks[8] & 0xff . chr$left & 0xff . chr$right>>24 & $masks[24] . chr$right>>16 & $masks[16] & 0xff . chr$right>>8 & $masks[8] & 0xff . chr$right & 0xff;

        $chunk += 8;
        if $chunk == 512 {$result .= $tempresult; $tempresult = ""; $chunk = 0;}
      } //for every 8 characters, or 64 bits in the message

      //return the result as an array
      return $result . $tempresult;
    } //end of des

    /**
     * createKeys
     * this takes as input a 64 bit key even though only 56 bits are used
     * as an array of 2 integers, and returns 16 48 bit keys
     * @param string $key 加密key
     * @return string
     */
    private static function _createKeys $key {
      //declaring this locally speeds things up a bit
      $pc2bytes0  = array 0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204;
      $pc2bytes1  = array 0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101;
      $pc2bytes2  = array 0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808;
      $pc2bytes3  = array 0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000;
      $pc2bytes4  = array 0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010;
      $pc2bytes5  = array 0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420;
      $pc2bytes6  = array 0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002;
      $pc2bytes7  = array 0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800;
      $pc2bytes8  = array 0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002;
      $pc2bytes9  = array 0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408;
      $pc2bytes10 = array 0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020;
      $pc2bytes11 = array 0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200;
      $pc2bytes12 = array 0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010;
      $pc2bytes13 = array 0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105;
      $masks = array 4294967295,2147483647,1073741823,536870911,268435455,134217727,67108863,33554431,16777215,8388607,4194303,2097151,1048575,524287,262143,131071,65535,32767,16383,8191,4095,2047,1023,511,255,127,63,31,15,7,3,1,0;

      //how many iterations 1 for des, 3 for triple des
      $iterations = strlen$key >= 24 ? 3 : 1;
      //stores the return keys
      $keys = array ; // size = 32 * iterations but you dont specify this in php
      //now define the left shifts which need to be done
      $shifts = array 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0;
      //other variables
      $m=0;
      $n=0;

      for $j=0; $j<$iterations; $j++ { //either 1 or 3 iterations
        $left = ord$key{$m++} << 24 | ord$key{$m++} << 16 | ord$key{$m++} << 8 | ord$key{$m++};
        $right = ord$key{$m++} << 24 | ord$key{$m++} << 16 | ord$key{$m++} << 8 | ord$key{$m++};

        $temp = $left >> 4 & $masks[4] ^ $right & 0x0f0f0f0f; $right ^= $temp; $left ^= $temp << 4;
        $temp = $right >> 16 & $masks[16] ^ $left & 0x0000ffff; $left ^= $temp; $right ^= $temp << -16;
        $temp = $left >> 2 & $masks[2] ^ $right & 0x33333333; $right ^= $temp; $left ^= $temp << 2;
        $temp = $right >> 16 & $masks[16] ^ $left & 0x0000ffff; $left ^= $temp; $right ^= $temp << -16;
        $temp = $left >> 1 & $masks[1] ^ $right & 0x55555555; $right ^= $temp; $left ^= $temp << 1;
        $temp = $right >> 8 & $masks[8] ^ $left & 0x00ff00ff; $left ^= $temp; $right ^= $temp << 8;
        $temp = $left >> 1 & $masks[1] ^ $right & 0x55555555; $right ^= $temp; $left ^= $temp << 1;

        //the right side needs to be shifted and to get the last four bits of the left side
        $temp = $left << 8 | $right >> 20 & $masks[20] & 0x000000f0;
        //left needs to be put upside down
        $left = $right << 24 | $right << 8 & 0xff0000 | $right >> 8 & $masks[8] & 0xff00 | $right >> 24 & $masks[24] & 0xf0;
        $right = $temp;

        //now go through and perform these shifts on the left and right keys
        for $i=0; $i < count$shifts; $i++ {
          //shift the keys either one or two bits to the left
          if $shifts[$i] > 0 {
             $left = $left << 2 | $left >> 26 & $masks[26];
             $right = $right << 2 | $right >> 26 & $masks[26];
          } else {
             $left = $left << 1 | $left >> 27 & $masks[27];
             $right = $right << 1 | $right >> 27 & $masks[27];
          }
          $left = $left & -0xf;
          $right = $right & -0xf;

          //now apply PC-2, in such a way that E is easier when encrypting or decrypting
          //this conversion will look like PC-2 except only the last 6 bits of each byte are used
          //rather than 48 consecutive bits and the order of lines will be according to
          //how the S selection functions will be applied: S2, S4, S6, S8, S1, S3, S5, S7
          $lefttemp = $pc2bytes0[$left >> 28 & $masks[28]] | $pc2bytes1[$left >> 24 & $masks[24] & 0xf]
                  | $pc2bytes2[$left >> 20 & $masks[20] & 0xf] | $pc2bytes3[$left >> 16 & $masks[16] & 0xf]
                  | $pc2bytes4[$left >> 12 & $masks[12] & 0xf] | $pc2bytes5[$left >> 8 & $masks[8] & 0xf]
                  | $pc2bytes6[$left >> 4 & $masks[4] & 0xf];
          $righttemp = $pc2bytes7[$right >> 28 & $masks[28]] | $pc2bytes8[$right >> 24 & $masks[24] & 0xf]
                    | $pc2bytes9[$right >> 20 & $masks[20] & 0xf] | $pc2bytes10[$right >> 16 & $masks[16] & 0xf]
                    | $pc2bytes11[$right >> 12 & $masks[12] & 0xf] | $pc2bytes12[$right >> 8 & $masks[8] & 0xf]
                    | $pc2bytes13[$right >> 4 & $masks[4] & 0xf];
          $temp = $righttemp >> 16 & $masks[16] ^ $lefttemp & 0x0000ffff;
          $keys[$n++] = $lefttemp ^ $temp; $keys[$n++] = $righttemp ^ $temp << 16;
        }
      } //for each iterations
      //return the keys weve created
      return $keys;
    } //end of des_createKeys

}

明显就是编码的问题。

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