Blowfish加密,分别使用PHP和C++实现,但结果不同.该如何处理

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Release: 2016-06-13 12:55:55
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Blowfish加密,分别使用PHP和C++实现,但结果不同...
先是MD5实验,结果相同,但使用Blowfish实验,怎么做也成功不了
调用如下:

<?php<br />
     <br />
    $cipher = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_ECB, '');<br />
<br />
    $iv   = '00000000';<br />
    $key  = "strkey11";<br />
<br />
    $stext = '38A0E9312DDA8F7C16B9A12159168C76';<br />
    $stext = md5($stext, true);<br />
    //经过调试知道,在这时$stext的值与C++中MD5后的结果一致<br />
<br />
    if (mcrypt_generic_init($cipher, $key, $iv) != -1)<br />
    {<br />
        $dtext = mcrypt_generic($cipher,$stext );<br />
        mcrypt_generic_deinit($cipher);<br />
<br />
        // Display the result in hex.<br />
        printf("blowfish encrypted:<br>%s<br><br>",strtoupper(bin2hex($dtext)));<br />
    }<br />
    mcrypt_module_close($cipher);<br />
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C++的是这样:
    MD5_CTX md5;<br />
    unsigned char str[16];<br />
    md5.MD5String(strSource.c_str() ,str);<br />
<br />
    BlockCipher *bf;<br />
    char key[] = "strkey11";              //Key<br />
    bf = new BlowFish();<br />
    bf->setKey((void *)key, 8*8);<br />
<br />
    bf->encrypt((void *)str, 8);      //unsigned char str[16];<br />
    bf->encrypt((void *)(str+8), 8);<br />
    char temp1[4] = {0};<br />
    char buff1[128] = {0};<br />
    for(int i = 0;i<16;i++)<br />
    {<br />
        sprintf(temp1,"%02x",str[i]);<br />
        strcat(buff1,temp1);<br />
    }<br />
    AnsiString strResult = String(buff1).UpperCase();<br />
    delete bf;
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------解决方案--------------------
$iv   = '00000000'; ???
按 bf->setKey((void *)key, 8*8); 理解
应该是
$iv = "\x00\x00\x00\x00\x00\x00\x00\x00";
吧?

------解决方案--------------------
IV is ignored in ECB. IV MUST exist in CFB, CBC, STREAM, nOFB and OFB modes.
MCRYPT_MODE_ECB的模式,$iv是忽略的,应该不是这个问题。

好像是加密之前要padding,你试试看
$size = mcrypt_get_block_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB);
$input = pkcs5_pad($input, $size); 

function pkcs5_pad ($text, $blocksize)
{
    $pad = $blocksize - (strlen($text) % $blocksize);
    return $text . str_repeat(chr($pad), $pad);
}

function pkcs5_unpad($text)
{
    $pad = ord($text{strlen($text)-1});
    if ($pad > strlen($text)) return false;
    if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return false;

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