PHPAES加密解密算法

PHP AES加密解密算法

    输出的是32的倍数位16进制的字符串     
        echo '第一种AES加密方案:
';    
        printf("128-bit encrypted result:\n%s\n\n",bin2hex($cipherText));    
        echo '
';echo '
';    
    }    
    //--------第一种AES加密方案--------    
    ?>   
    

转载来源：http://www.chilkatsoft.com/p/php_aes.asp http://www.cnblogs.com/adylee/archive/2007/09/14/893438.html 转载来源：http://blog.csdn.net/shushengsky/archive/2009/12/13/4961861.aspx

  
    ';    
    $key = '1234567890123456';    
    $content = 'hello';    
    $padkey = pad2Length($key,16);    
    $cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');    
    $iv_size = mcrypt_enc_get_iv_size($cipher);    
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); #IV自动生成？    
    echo '自动生成iv的长度:'.strlen($iv).'位:'.bin2hex($iv).'
';    
    if (mcrypt_generic_init($cipher, pad2Length($key,16), $iv) != -1)    
    {    
        // PHP pads with NULL bytes if $content is not a multiple of the block size..    
        $cipherText = mcrypt_generic($cipher,pad2Length($content,16) );    
        mcrypt_generic_deinit($cipher);    
        mcrypt_module_close($cipher);    
           
        // Display the result in hex.    
        printf("128-bit encrypted result:\n%s\n\n",bin2hex($cipherText));    
        print("
");    
           
    }    
    //解密    
    $mw = bin2hex($cipherText);    
    $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');    
    if (mcrypt_generic_init($td, $padkey, $iv) != -1)    
    {    
        $p_t = mdecrypt_generic($td, hexToStr($mw));    
        mcrypt_generic_deinit($td);    
        mcrypt_module_close($td);    
           
        $p_t = trimEnd($p_t);    
        echo '解密:';    
        print($p_t);    
        print("
");    
        print(bin2hex($p_t));    
        echo '

';    
    }    
    //将$text补足$padlen倍数的长度    
    function pad2Length($text, $padlen){    
        $len = strlen($text)%$padlen;    
        $res = $text;    
        $span = $padlen-$len;    
        for($i=0; $i<$span; $i++){    
            $res .= chr($span);    
        }    
        return $res;    
    }    
    //将解密后多余的长度去掉(因为在加密的时候 补充长度满足block_size的长度)    
    function trimEnd($text){    
        $len = strlen($text);    
        $c = $text[$len-1];    
        if(ord($c) <$len){    
            for($i=$len-ord($c); $i<$len; $i++){    
                if($text[$i] != $c){    
                    return $text;    
                }    
            }    
            return substr($text, 0, $len-ord($c));    
        }    
        return $text;    
    }    
    //16进制的转为2进制字符串    
    function hexToStr($hex)     
    {     
        $bin="";     
        for($i=0; $i  
    
  
    ';    
    $key = '1234567890123456';    
    $key = pad2Length($key,16);    
    $iv = 'asdff';    
    $content = 'hello';    
    $content = pad2Length($content,16);    
    $AESed =  bin2hex( mcrypt_encrypt(MCRYPT_RIJNDAEL_128,$key,$content,MCRYPT_MODE_ECB,$iv) ); #加密    
    echo "128-bit encrypted result:".$AESed.'
';    
    $jiemi = mcrypt_decrypt(MCRYPT_RIJNDAEL_128,$key,hexToStr($AESed),MCRYPT_MODE_ECB,$iv); #解密    
    echo '解密:';    
    echo trimEnd($jiemi);    
    //--------第三种AES加密方案--------    
    ?>  
      
    #KEY长度无限制，IV长度必须是block_size的倍数  
    #如果是MCRYPT_MODE_ECB加密，结果与KEY有关，与IV无关  
    #如果是MCRYPT_MODE_CBC加密，结果与KEY有关，与IV有关  

 

 

//--------第四种AES加密/解密方案 CBC模式,128-bit-------- 

 

/*
* 实现AES加密
* $str : 要加密的字符串
* $keys : 加密密钥
* $iv : 加密向量
* $cipher_alg : 加密方式
*/
function ecryptdString($str,$keys="6461772803150152",$iv="8105547186756005",$cipher_alg=MCRYPT_RIJNDAEL_128){
    $encrypted_string= bin2hex(mcrypt_encrypt($cipher_alg,$keys, $str, MCRYPT_MODE_CBC,$iv));
    return$encrypted_string;
}
/*
* 实现AES解密
* $str : 要解密的字符串
* $keys : 加密密钥
* $iv : 加密向量
* $cipher_alg : 加密方式
*/
functiondecryptStrin($str,$keys="6461772803150152",$iv="8105547186756005",$cipher_alg=MCRYPT_RIJNDAEL_128){
    $decrypted_string= mcrypt_decrypt($cipher_alg,$keys, pack("H*",$str),MCRYPT_MODE_CBC,$iv);
    return$decrypted_string;
}