PHP如何实现AES加密、解密？方法介绍（代码示例）
导读：收集整理的这篇文章主要介绍了PHP如何实现AES加密、解密？方法介绍（代码示例），觉得挺不错的，现在分享给大家，也给大家做个参考。1、mcrypt_encrypt AES加密，解密class Lib_desEnctyp{ PRivat...
收集整理的这篇文章主要介绍了PHP如何实现AES加密、解密？方法介绍（代码示例），觉得挺不错的，现在分享给大家，也给大家做个参考。1、mcrypt_encrypt AES加密，解密
class Lib_desEnctyp{
PRivate $key = "";
private $iv = "";
/** * 构造，传递二个已经进行base64_encode的KEY与IV * * @param string $key * @param string $iv */ function __construct ($key, $iv) {
if (empty($key) || empty($iv)) {
echo 'key and iv is not valid';
exIT();
}
$this->
key = $key;
$this->
iv = $iv;
}
/** *加密 * @param tyPE>
$value * @return type>
*/ public function encrypt ($value) {
$td = mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_CBC, '');
$iv = base64_decode($this->
iv);
$value = $this->
PaddingPKCS7($value);
$key = base64_decode($this->
key);
mcrypt_generic_init($td, $key, $iv);
$ret = base64_encode(mcrypt_generic($td, $value));
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
return $ret;
}
/** *解密 * @param type>
$value * @return type>
*/ public function decrypt ($value) {
$td = mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_CBC, '');
$iv = base64_decode($this->
iv);
$key = base64_decode($this->
key);
mcrypt_generic_init($td, $key, $iv);
$ret = trim(mdecrypt_generic($td, base64_decode($value)));
$ret = $this->
UnPaddingPKCS7($ret);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
return $ret;
}
private function PaddingPKCS7 ($data) {
$block_size = mcrypt_get_block_size('tripledes', 'cbc');
$padding_char = $block_size - (strlen($data) % $block_size);
$data .= str_repeat(chr($padding_char), $padding_char);
return $data;
}
private function UnPaddingPKCS7($text) {
$pad = ord($text{
strlen($text) - 1}
);
if ($pad >
strlen($text)) {
return false;
}
if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) {
return false;
}
return substr($text, 0, - 1 * $pad);
}
}
2、openssl 加密，解密 [方式1]
/** * DES加密类 * User: gaowei * Date: 2017/12/12 * Time: 19:23 */class DesEncrypt {
private $key = "";
private $iv = "";
/** * 构造，传递二个已经进行base64_encode的KEY与IV * * @param string $key * @param string $iv */ function __construct ($key, $iv) {
if (empty($key) || empty($iv)) {
echo 'key and iv is not valid';
exit();
}
$this->
key = $key;
$this->
iv = $iv;
//8 //$this->
iv = $iv.'00000000000';
//16 }
/** * @title 加密 * @author gaowei * @date 2017/12/18 * @param string $value 要传的参数 * @ //OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING //AES-128-ECB|AES-256-CBC|BF-CBC * @return json * */ public function encrypt ($value) {
//参考地址：https://stackoverflow.COM/questions/41181905/php-mcrypt-encrypt-to-openssl-encrypt-and-openssl-zero-padding-problems# $value = $this->
PaddingPKCS7($value);
$key = base64_decode($this->
key);
$iv = base64_decode($this->
iv);
//AES-128-ECB|不能用 AES-256-CBC|16 AES-128-CBC|16 BF-CBC|8 aes-128-gcm|需要加$tag DES-EDE3-CBC|8 $cipher = "DES-EDE3-CBC";
if (in_array($cipher, openssl_get_cipher_methods())) {
//$ivlen = openssl_cipher_iv_length($cipher);
// $iv = openssl_random_pseudo_bytes($ivlen);
$result = openssl_encrypt($value, $cipher, $key, OPENSSL_SSLV23_PADDING, $iv);
//$result = base64_encode($result);
//为3的时间要用 //Store $cipher, $iv, and $tag for decryption later /* $original_plaintext = openssl_decrypt($result, $cipher, $key, OPENSSL_SSLV23_PADDING, $iv);
echo $original_plaintext."\n";
*/ }
return $result;
}
/** * @title 解密 * @author gaowei * @date 2017/12/18 * @param string $value 要传的参数 * @return json * */ public function decrypt ($value) {
$key = base64_decode($this->
key);
$iv = base64_decode($this->
iv);
$decrypted = openssl_decrypt($value, 'DES-EDE3-CBC', $key, OPENSSL_SSLV23_PADDING, $iv);
$ret = $this->
UnPaddingPKCS7($decrypted);
return $ret;
}
private function PaddingPKCS7 ($data) {
//$block_size = mcrypt_get_block_size('tripledes', 'cbc');
//获取长度 //$block_size = openssl_cipher_iv_length('tripledes', 'cbc');
//获取长度 $block_size = 8;
$padding_char = $block_size - (strlen($data) % $block_size);
$data .= str_repeat(chr($padding_char), $padding_char);
return $data;
}
private function UnPaddingPKCS7($text) {
$pad = ord($text{
strlen($text) - 1}
);
if ($pad >
strlen($text)) {
return false;
}
if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) {
return false;
}
return substr($text, 0, - 1 * $pad);
}
}
3、openssl 加密，解密 [方式2]
/** * @desc：php aes加密解密类 * @author gl * @date 2019/08/31 */class CI_Aes{
/** * CI_Aes cipher * @VAR string */ protected $cipher = 'aes-128-ecb';
/** * CI_Aes key * * @var string */ protected $key;
/** * CI_Aes constructor * @param string $key configuration parameter */ public function __construct($key=null){
$this->
key = $key;
}
/** * Initialize * * @param array $params Configuration parameters * @return CI_Encryption */ public function initialize($params) {
if (!empty($params) &
&
is_array($params)) {
foreach ($params as $key =>
$val) {
$this->
$key = $val;
}
}
}
/** * Encrypt * * @param string $data Input data * @return string */ public function encrypt($data) {
$endata = openssl_encrypt($data, $this->
cipher, $this->
key, OPENSSL_RAW_DATA);
return bin2hex($endata);
}
/** * Decrypt * * @param string $data Encrypted data * @return string */ public function decrypt($data) {
$encrypted = hex2bin($data);
return openssl_decrypt($encrypted, $this->
cipher, $this->
key, OPENSSL_RAW_DATA);
}
}
4、其他 加密，解密
//加密函数function lock_url($txt,$key='www.jb51.net'){
$chars = "abcDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";
$nh = rand(0,64);
$ch = $chars[$nh];
$mdKey = md5($key.$ch);
$mdKey = substr($mdKey,$nh%8, $nh%8+7);
$txt = base64_encode($txt);
$tmp = '';
$i=0;
$j=0;
$k = 0;
for ($i=0;
$istrlen($txt);
$i++) {
$k = $k == strlen($mdKey) ? 0 : $k;
$j = ($nh+strpos($chars,$txt[$i])+ord($mdKey[$k++]))%64;
$tmp .= $chars[$j];
}
return urlencode($ch.$tmp);
}
//解密函数function unlock_url($txt,$key='www.jb51.net'){
$txt = urldecode($txt);
$chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";
$ch = $txt[0];
$nh = strpos($chars,$ch);
$mdKey = md5($key.$ch);
$mdKey = substr($mdKey,$nh%8, $nh%8+7);
$txt = substr($txt,1);
$tmp = '';
$i=0;
$j=0;
$k = 0;
for ($i=0;
$istrlen($txt);
$i++) {
$k = $k == strlen($mdKey) ? 0 : $k;
$j = strpos($chars,$txt[$i])-$nh - ord($mdKey[$k++]);
while ($j0) $j+=64;
$tmp .= $chars[$j];
}
return base64_decode($tmp);
}
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