PbeCipher.java
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package com.diligrp.assistant.shared.security;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import java.security.Key;
import java.util.Random;
/**
* PBE算法工具类
*/
public class PbeCipher {
private static final String ALGORITHM = "PBEWithSHA1AndDESede";
public static byte[] encrypt(byte[] data, String password, byte[] salt) throws Exception {
Key key = toKey(password);
PBEParameterSpec paramSpec = new PBEParameterSpec(salt, 100);
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
return cipher.doFinal(data);
}
public static byte[] decrypt(byte[] data, String password, byte[] salt) throws Exception {
Key key = toKey(password);
PBEParameterSpec paramSpec = new PBEParameterSpec(salt, 100);
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
return cipher.doFinal(data);
}
private static byte[] initSalt() throws Exception {
byte[] salt = new byte[8];
Random random = new Random();
random.nextBytes(salt);
return salt;
}
private static Key toKey(String password) throws Exception {
PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
SecretKey secretKey = keyFactory.generateSecret(keySpec);
return secretKey;
}
}