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94 lines
2.8 KiB
94 lines
2.8 KiB
2 years ago
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package com.fr.plugin.cmd.utils;
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import com.fanruan.api.log.LogKit;
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import com.fr.third.org.apache.commons.codec.binary.Base64;
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import org.bouncycastle.jce.provider.BouncyCastleProvider;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import java.security.Security;
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public class AESUtil {
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/**
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* 密钥算法
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*/
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private static final String KEY_ALGORITHM = "AES";
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/**
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* 加密/解密算法 / 工作模式 / 填充方式
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* Java 6支持PKCS5Padding填充方式
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* Bouncy Castle支持PKCS7Padding填充方式
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*/
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private static final String CIPHER_ALGORITHM = "AES/CBC/PKCS7Padding";
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/**
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* 偏移量，只有CBC模式才需要
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*/
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private final static String ivParameter = "xxx";
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/**
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* AES要求密钥长度为128位或192位或256位，java默认限制AES密钥长度最多128位
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*/
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public static String sKey = "xxx";
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/**
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* 编码格式
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*/
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public static final String ENCODING = "utf-8";
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static {
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//如果是PKCS7Padding填充方式，则必须加上下面这行
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Security.addProvider(new BouncyCastleProvider());
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}
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/**
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* AES加密
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*
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* @param source 源字符串
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* @param key 密钥
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* @return 加密后的密文
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* @throws Exception
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*/
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public static String encrypt(String source, String key) {
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try {
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byte[] sourceBytes = source.getBytes(ENCODING);
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byte[] keyBytes = key.getBytes(ENCODING);
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Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM, "BC");
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IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes(ENCODING));
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cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(keyBytes, KEY_ALGORITHM), iv);
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byte[] decrypted = cipher.doFinal(sourceBytes);
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return Base64.encodeBase64String(decrypted);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* AES解密
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*
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* @param encryptStr 加密后的密文
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* @param key 密钥
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* @return 源字符串
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* @throws Exception
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*/
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public static String decrypt(String encryptStr, String key) {
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try {
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byte[] sourceBytes = Base64.decodeBase64(encryptStr);
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byte[] keyBytes = key.getBytes(ENCODING);
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Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM, "BC");
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IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes(ENCODING));
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cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(keyBytes, KEY_ALGORITHM), iv);
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byte[] decoded = cipher.doFinal(sourceBytes);
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return new String(decoded, ENCODING);
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} catch (Exception e) {
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LogKit.error(e.getMessage(), e);
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}
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return null;
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}
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}
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