在PHP中使用AES加密算法加密数据

在PHP中,我们必须先安装好mcrypt这个模块,并且添加相应版本的扩展到php中,详情可以看 不重新编译PHP安装Mcrypt扩展

AES加密模式和填充方式有以下之中,但不是全部


算法/模式/填充 16字节加密后数据长度 不满16字节加密后长度
AES/CBC/NoPadding 16 不支持
AES/CBC/PKCS5Padding 32 16
AES/CBC/ISO10126Padding 32 16
AES/CFB/NoPadding 16 原始数据长度
AES/CFB/PKCS5Padding 32 16
AES/CFB/ISO10126Padding 32 16
AES/ECB/NoPadding 16 不支持
AES/ECB/PKCS5Padding 32 16
AES/ECB/ISO10126Padding 32 16
AES/OFB/NoPadding 16 原始数据长度
AES/OFB/PKCS5Padding 32 16
AES/OFB/ISO10126Padding 32 16
AES/PCBC/NoPadding 16 不支持
AES/PCBC/PKCS5Padding 32 16
AES/PCBC/ISO10126Padding 32 16
下面就是在PHP中使用AES对数据加密

AES-CBC 加密方案

<?php
$privateKey = "1234567812345678";
$iv = "1234567812345678";
$data = "Test String";

//加密
$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $privateKey, $data, MCRYPT_MODE_CBC, $iv);
echo(base64_encode($encrypted));
echo '<br/>';

//解密
$encryptedData = base64_decode("2fbwW9+8vPId2/foafZq6Q==");
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $privateKey, $encryptedData, MCRYPT_MODE_CBC, $iv);
echo($decrypted);
?>
AES-ECB加密方案 

<?php 
//加密 
$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).'<br>'; 
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%snn",bin2hex($cipherText)); 
print("<br />"); 


//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($p_t); 
print("<br />"); 
print(bin2hex($p_t)); 
echo '<br><br>'; 

//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; $i<strlen($hex)-1; $i+=2) 

$bin.=chr(hexdec($hex[$i].$hex[$i+1])); 

return $bin; 

AES-ECB加密方案

<?php 
$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.'<br>'; 
$jiemi = mcrypt_decrypt(MCRYPT_RIJNDAEL_128,$key,hexToStr($AESed),MCRYPT_MODE_ECB,$iv); #解密 
echo '解密:'; 
echo trimEnd($jiemi); 
?> 

posted @ 2020-08-02 16:06  hubb  阅读(624)  评论(0编辑  收藏  举报