php与java通用AES加密解密算法，aes加密解密
AES指高级加密标准（Advanced Encryption Standard）,是当前最流行的一种密码算法，在web应用开发，特别是对外提供接口时经常会用到，下面是我整理的一套php与java通用的AES加密解密算法。php版代码如下：
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<?php
class CryptAES
{
protected $cipher = MCRYPT_RIJNDAEL_128;
protected $mode = MCRYPT_MODE_ECB;
protected $pad_method = NULL;
protected $secret_key =
'';
protected $iv =
'';
public function set_cipher($cipher)
{
$this->cipher =
$cipher;
}
public function set_mode($mode)
{
$this->mode =
$mode;
}
public function set_iv($iv)
{
$this->iv =
$iv;
}
public function set_key($key)
{
$this->secret_key =
$key;
}
public function require_pkcs5()
{
$this->pad_method =
'pkcs5';
}
protected function pad_or_unpad($str,
$ext)
{
if (
is_null($this->pad_method) )
{
return $str;
}
else
{
$func_name =
__CLASS__ .
'::' . $this->pad_method .
'_' . $ext .
'pad';
if (
is_callable($func_name) )
{
$size = mcrypt_get_block_size($this->cipher,
$this->mode);
return call_user_func($func_name,
$str, $size);
}
}
return $str;
}
protected function pad($str)
{
return $this->pad_or_unpad($str,
'');
}
protected function unpad($str)
{
return $this->pad_or_unpad($str,
'un');
}
public function encrypt($str)
{
$str =
$this->pad($str);
$td = mcrypt_module_open($this->cipher,
'', $this->mode,
'');
if (
empty($this->iv) )
{
$iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td),
MCRYPT_RAND);
}
else
{
$iv =
$this->iv;
}
mcrypt_generic_init($td,
$this->secret_key,
$iv);
$cyper_text = mcrypt_generic($td,
$str);
$rt=base64_encode($cyper_text);
//$rt = bin2hex($cyper_text);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
return $rt;
}
public function decrypt($str){
$td = mcrypt_module_open($this->cipher,
'', $this->mode,
'');
if (
empty($this->iv) )
{
$iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td),
MCRYPT_RAND);
}
else
{
$iv =
$this->iv;
}
mcrypt_generic_init($td,
$this->secret_key,
$iv);
//$decrypted_text = mdecrypt_generic($td, self::hex2bin($str));
$decrypted_text = mdecrypt_generic($td,
base64_decode($str));
$rt =
$decrypted_text;
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
return $this->unpad($rt);
}
public static function hex2bin($hexdata)
{
$bindata =
'';
$length =
strlen($hexdata);
for ($i=0;
$i amp;<
$length; $i += 2)
{
$bindata .=
chr(hexdec(substr($hexdata,
$i, 2)));
}
return $bindata;
}
public static function pkcs5_pad($text,
$blocksize)
{
$pad =
$blocksize - (strlen($text) %
$blocksize);
return $text .
str_repeat(chr($pad),
$pad);
}
public static function pkcs5_unpad($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);
}
}
$keyStr =
'UITN25LMUQC436IM';
$plainText =
'this is a string will be AES_Encrypt';
$aes =
new CryptAES();
$aes->set_key($keyStr);
$aes->require_pkcs5();
$encText =
$aes->encrypt($plainText);
$decString =
$aes->decrypt($encText);
echo $encText,"n",$decString;
?>
|
运行结果：
fhTD0NNIzv4jUEhJuC1htFFXJ/4S/rL6tDCJPiNvJ8mVLHWOD0HWweuxHynxoZf9
this is a string will be AES_Encrypt
java版代码如下：
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import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
public class CryptAES {
private static final String AESTYPE ="AES/ECB/PKCS5Padding";
public static String AES_Encrypt(String keyStr, String plainText) {
byte[] encrypt =
null;
try{
Key key = generateKey(keyStr);
Cipher cipher = Cipher.getInstance(AESTYPE);
cipher.init(Cipher.ENCRYPT_MODE, key);
encrypt = cipher.doFinal(plainText.getBytes());
}catch(Exception e){
e.printStackTrace();
}
return new String(Base64.encodeBase64(encrypt));
}
public static String AES_Decrypt(String keyStr, String encryptData) {
byte[] decrypt =
null;
try{
Key key = generateKey(keyStr);
Cipher cipher = Cipher.getInstance(AESTYPE);
cipher.init(Cipher.DECRYPT_MODE, key);
decrypt = cipher.doFinal(Base64.decodeBase64(encryptData));
}catch(Exception e){
e.printStackTrace();
}
return new String(decrypt).trim();
}
private static Key generateKey(String key)throws Exception{
try{
SecretKeySpec keySpec =
new SecretKeySpec(key.getBytes(),
"AES");
return keySpec;
}catch(Exception e){
e.printStackTrace();
throw e;
}
}
public static void main(String[] args) {
String keyStr =
"UITN25LMUQC436IM";
String plainText =
"this is a string will be AES_Encrypt";
String encText = AES_Encrypt(keyStr, plainText);
String decString = AES_Decrypt(keyStr, encText);
System.out.println(encText);
System.out.println(decString);
}
}
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