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- package com.ruixuan.common.utils.encryption;
- import javax.crypto.Cipher;
- import javax.crypto.spec.IvParameterSpec;
- import javax.crypto.spec.SecretKeySpec;
- import java.io.UnsupportedEncodingException;
- /**
- * AES 加密
- */
- public class AesEncryptUtil {
- //使用AES-128-CBC加密模式,key需要为16位,key和iv可以相同!
- private static String KEY = EncryptedString.key;
- private static String IV = EncryptedString.iv;
- /**
- * 加密方法
- *
- * @param data 要加密的数据
- * @param key 加密key
- * @param iv 加密iv
- * @return 加密的结果
- * @throws Exception
- */
- /*public static String encrypt(String data, String key, String iv) {
- try {
- Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");//"算法/模式/补码方式"NoPadding PkcsPadding
- int blockSize = cipher.getBlockSize();
- byte[] dataBytes = data.getBytes();
- int plaintextLength = dataBytes.length;
- if (plaintextLength % blockSize != 0) {
- plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
- }
- byte[] plaintext = new byte[plaintextLength];
- System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
- SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
- IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
- cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
- byte[] encrypted = cipher.doFinal(plaintext);
- return Base64.encodeToString(encrypted);
- } catch (Exception e) {
- e.printStackTrace();
- return null;
- }
- }*/
- /**
- * 解密方法
- *
- * @param data 要解密的数据
- * @param key 解密key
- * @param iv 解密iv
- * @return 解密的结果
- * @throws Exception
- */
- /*public static String desEncrypt(String data, String key, String iv) {
- try {
- byte[] encrypted1 = Base64.decode(data);
- Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
- SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
- IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
- cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
- byte[] original = cipher.doFinal(encrypted1);
- String originalString = new String(original);
- return originalString;
- } catch (Exception e) {
- e.printStackTrace();
- return null;
- }
- }*/
- private AesEncryptUtil() {
- }
- /**
- * 使用默认的key和iv加密
- *
- * @param data
- * @return
- * @throws Exception
- */
- /*public static String encrypt(String data) {
- return encrypt(data, EncryptedString.key, EncryptedString.iv);
- }*/
- /**
- * 使用默认的key和iv解密
- *
- * @param data
- * @return
- */
- /*public static String desEncrypt(String data) {
- return desEncrypt(data, EncryptedString.key, EncryptedString.iv);
- }*/
- public static String getUrlDecoderString(String str) {
- String result = "";
- if (null == str) {
- return "";
- }
- try {
- result = java.net.URLDecoder.decode(str, "UTF-8");
- } catch (UnsupportedEncodingException e) {
- }
- return result;
- }
- }
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