加密解密 - Java Aes 类，可否用 php 实现，求助于懂 Java 代码的 php 程序猿
程序员文章站
2024-01-22 18:43:10
...
Java 代码：
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
public class AESSecurityUtil {
private static final String AES = "AES";
private static final String CHARSET_NAME = "utf-8";
private static SecretKeySpec getKey(String password) throws NoSuchAlgorithmException{
KeyGenerator kgen = KeyGenerator.getInstance(AES);
SecureRandom random=SecureRandom.getInstance("SHA1PRNG");
random.setSeed(password.getBytes());
kgen.init(128, random);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, AES);
return key;
}
public static String encode(String str, String password)
{
byte[] arr = encodeToArr(str, password);
return byteArrToString(arr);
}
private static byte[] encodeToArr(String str, String password)
{
try
{
Cipher cipher = Cipher.getInstance(AES);
byte[] byteContent = str.getBytes(CHARSET_NAME);
cipher.init(Cipher.ENCRYPT_MODE, getKey(password));
byte[] result = cipher.doFinal(byteContent);
return result;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
public static String decode(String hexStr, String password){
byte[] arr = string2ByteArr(hexStr);
return decode(arr, password);
}
private static String decode(byte[] arr, String password) {
try{
Cipher cipher = Cipher.getInstance(AES);
cipher.init(Cipher.DECRYPT_MODE, getKey(password));
byte[] result = cipher.doFinal(arr);
return new String(result, CHARSET_NAME);
}catch (Exception e){
e.printStackTrace();
}
return null;
}
private static String byteArrToString(byte[] arr) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i 背景：对方平台语言是Java，参数必须加密，返回数据也是加密后返回，我这边语言是php
问题：这个Java aes 类，能否用php实现，如果能实现，应该如何实现，请指点。
我写的php代码：
_cipher, $this->_mode);
$paddedData = $this->_pkcs5Pad($encrypt, $blockSize);
$ivSize = mcrypt_get_iv_size($this->_cipher, $this->_mode);
$iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);
$encrypted = mcrypt_encrypt($this->_cipher, $key, $paddedData, $this->_mode, $iv);
return bin2hex($encrypted);
}
public function decrypt($decrypt, $key) {
$decoded = hex2bin($decrypt);
$blockSize = mcrypt_get_iv_size($this->_cipher, $this->_mode);
$iv = mcrypt_create_iv($blockSize, MCRYPT_RAND);
$decrypted = mcrypt_decrypt($this->_cipher, $key, $decoded, $this->_mode, $iv);
return $this->_pkcs5Unpad($decrypted);
}
}
$keyStr = 'UITN25LMUQC436IM';
$plainText = 'this is a string will be AES_Encrypt';
$aes = new Util_AesEncrypt();
$encText = $aes->encrypt($plainText, $keyStr);
$decString = $aes->decrypt($encText, $keyStr);
echo $encText, "\n", $decString;
两者运行结果很大差异，并且也没法互相加密解密，应如何改正？
回复内容：
Java 代码：
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
public class AESSecurityUtil {
private static final String AES = "AES";
private static final String CHARSET_NAME = "utf-8";
private static SecretKeySpec getKey(String password) throws NoSuchAlgorithmException{
KeyGenerator kgen = KeyGenerator.getInstance(AES);
SecureRandom random=SecureRandom.getInstance("SHA1PRNG");
random.setSeed(password.getBytes());
kgen.init(128, random);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, AES);
return key;
}
public static String encode(String str, String password)
{
byte[] arr = encodeToArr(str, password);
return byteArrToString(arr);
}
private static byte[] encodeToArr(String str, String password)
{
try
{
Cipher cipher = Cipher.getInstance(AES);
byte[] byteContent = str.getBytes(CHARSET_NAME);
cipher.init(Cipher.ENCRYPT_MODE, getKey(password));
byte[] result = cipher.doFinal(byteContent);
return result;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
public static String decode(String hexStr, String password){
byte[] arr = string2ByteArr(hexStr);
return decode(arr, password);
}
private static String decode(byte[] arr, String password) {
try{
Cipher cipher = Cipher.getInstance(AES);
cipher.init(Cipher.DECRYPT_MODE, getKey(password));
byte[] result = cipher.doFinal(arr);
return new String(result, CHARSET_NAME);
}catch (Exception e){
e.printStackTrace();
}
return null;
}
private static String byteArrToString(byte[] arr) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i 背景：对方平台语言是Java，参数必须加密，返回数据也是加密后返回，我这边语言是php
问题：这个Java aes 类，能否用php实现，如果能实现，应该如何实现，请指点。
我写的php代码：
_cipher, $this->_mode);
$paddedData = $this->_pkcs5Pad($encrypt, $blockSize);
$ivSize = mcrypt_get_iv_size($this->_cipher, $this->_mode);
$iv = mcrypt_create_iv($ivSize, MCRYPT_RAND);
$encrypted = mcrypt_encrypt($this->_cipher, $key, $paddedData, $this->_mode, $iv);
return bin2hex($encrypted);
}
public function decrypt($decrypt, $key) {
$decoded = hex2bin($decrypt);
$blockSize = mcrypt_get_iv_size($this->_cipher, $this->_mode);
$iv = mcrypt_create_iv($blockSize, MCRYPT_RAND);
$decrypted = mcrypt_decrypt($this->_cipher, $key, $decoded, $this->_mode, $iv);
return $this->_pkcs5Unpad($decrypted);
}
}
$keyStr = 'UITN25LMUQC436IM';
$plainText = 'this is a string will be AES_Encrypt';
$aes = new Util_AesEncrypt();
$encText = $aes->encrypt($plainText, $keyStr);
$decString = $aes->decrypt($encText, $keyStr);
echo $encText, "\n", $decString;
两者运行结果很大差异，并且也没法互相加密解密，应如何改正？
上一篇： php实现购物车功能（下）