『壹』 java Aes 類，可否用 php 實現，求助於懂 Java 代碼的 php 程序猿
Java Aes 類，用 php 實現方法：
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 <arr.length; i++) {
String s = Integer.toString(arr[i] + 128, 16);
if (s.length() == 1){
s ="0"+ s;
}
sb.append(s);
}
return sb.toString().toUpperCase();
}