复制代码 代码如下:

function encode_pass($tex,$key,$type="encode"){

$chrArr=array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',

'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',

'0','1','2','3','4','5','6','7','8','9');

if($type=="decode"){

if(strlen($tex)<14)return false;

$verity_str=substr($tex, 0,8);

$tex=substr($tex, 8);

if($verity_str!=substr(md5($tex),0,8)){

//完整性验证失败

return false;

}

}

$key_b=$type=="decode"?substr($tex,0,6):$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62].$chrArr[rand()%62];

$rand_key=$key_b.$key;

$rand_key=md5($rand_key);

$tex=$type=="decode"?base64_decode(substr($tex, 6)):$tex;

$texlen=strlen($tex);

$reslutstr="";

for($i=0;$i<$texlen;$i++){

$reslutstr.=$tex{$i}^$rand_key{$i%32};

}

if($type!="decode"){

$reslutstr=trim($key_b.base64_encode($reslutstr),"==");

$reslutstr=substr(md5($reslutstr), 0,8).$reslutstr;

}

return $reslutstr;

}

$psa=encode_pass("phpcode","taintainxousad");

echo $psa;

echo encode_pass($psa,"taintainxousad",'decode');