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KeygenUtil.php
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166 lines (149 loc) · 4.64 KB
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<?php
/**
* AES加/解密文工具类
* 利用php对java加解密工具类重新实现
* @author maohan
* @copyright maohan
* @version 1.0
*
*/
class KeygenUtil{
/**
* AES加密
* @param $content 待加密内容
* @param $keygen 秘钥
* @return 密文
*/
public static function encryptAES($content,$keygen){
if ($content==null) {
throw new Exception("加密内容不能为空");
}
$encryptResult = KeygenUtil::encrypt($content, $keygen);
// BASE64位加密
$encryptResultStr = KeygenUtil::ebotongEncrypto($encryptResult);
return $encryptResultStr;
}
/**
* AES解密
* @param $encryptResultStr 密文
* @param $keygen 秘钥
* @return 明文
*/
public static function decryptAES($encryptResultStr,$keygen) {
if ($encryptResultStr==null) {
throw new Exception("加密内容不能为空");
}
// BASE64位解密
try {
$decrpt = KeygenUtil::ebotongDecrypto($encryptResultStr);
$decryptResult =KeygenUtil::decrypt($decrpt, $keygen);
return $decryptResult;
} catch (Exception $e) {
// 当密文不规范时会报错，可忽略，但调用的地方需要考虑
echo 'Message: ' .$e->getMessage();
}
}
/**
* 转换字符串为bytes
* @param $string 待转换字符串
*/
public static function getBytes($string) {
$bytes = array();
for($i = 0; $i < strlen($string); $i++){
$bytes[] = ord($string[$i]);
}
return $bytes;
}
/**
* Base64加密字符串
*
* @param $str 待加密字符串
*/
public static function ebotongEncrypto($str) {
if ( $str!=null && strlen($str) > 0) {
utf8_encode($str);
$result =base64_encode($str);
}
// base64加密超过一定长度会自动换行 需要去除换行符
$patten = array("\r\n", "\n", "\r");
return str_replace($patten,"",$result);
}
/**
* Base64解密字符串
* @param $str 待解密字符串
*/
public static function ebotongDecrypto($str){
$result = base64_decode($str);
return $result;
}
/**
* @param $content 需要加密的内容
* @param $password 加密秘钥
* @return $result 返回加密结果
*
*/
public static function encrypt($content,$password){
$key= KeygenUtil::keytool($password);
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
$input = KeygenUtil::pkcs5_pad($content, $size);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
mcrypt_generic_init($td, $key, $iv);
$data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = bin2hex($data);
return $data;
}
private static function pkcs5_pad ($text, $blocksize) {
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
/**
* @param $content 需要解密的内容
* @param $password 解密秘钥
* @return $decrypted 返回解密结果
*
*/
public static function decrypt($content, $password) {
$key= KeygenUtil::keytool($password);
$decrypted= mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,
$key,
KeygenUtil::hexToStr($content),
MCRYPT_MODE_ECB
);
$dec_s = strlen($decrypted);
$padding = ord($decrypted[$dec_s-1]);
$decrypted = substr($decrypted, 0, -$padding);
return $decrypted;
}
public static function parseHexStr2Str($hexStr)
{
$str = "";
for ($i = 0, $size = strlen($hexStr) / 2; $i < $size; $i++) {
$c = hexdec(substr($hexStr, $i * 2, 2));
$str .= chr($c);
}
return $str;
}
/**
* 16进制的转为2进制字符串
*/
public static function hexToStr($hex)
{
$bin="";
for($i=0; $i<strlen($hex)-1; $i+=2)
{
$bin.=chr(hexdec($hex[$i].$hex[$i+1]));
}
return $bin;
}
/**
* java和php秘钥关系转换
*/
private static function keytool($password){
$key = substr(openssl_digest(openssl_digest($password, 'sha1', true), 'sha1', true), 0, 16);
return $key;
}
}