package com.hx.util;
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import org.apache.commons.codec.binary.Base64;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.SecretKeySpec;
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import java.io.UnsupportedEncodingException;
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/**
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* AES加密工具类
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*/
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public class Aes {
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/**
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* 将二进制转换成16进制
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*
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* @param buf 字节数组
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* @return
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*/
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public static String parseByte2HexStr(byte buf[]) {
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < buf.length; i++) {
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String hex = Integer.toHexString(buf[i] & 0xFF);
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if (hex.length() == 1) {
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hex = '0' + hex;
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}
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sb.append(hex.toUpperCase());
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}
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return sb.toString();
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}
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/**
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* 将16进制转换为二进制
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*
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* @param hexStr 16进制字符
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* @return
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*/
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public static byte[] parseHexStr2Byte(String hexStr) {
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if (hexStr.length() < 1)
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return null;
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byte[] result = new byte[hexStr.length() / 2];
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for (int i = 0; i < hexStr.length() / 2; i++) {
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int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
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int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
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result[i] = (byte) (high * 16 + low);
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}
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return result;
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}
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/**
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* 加密
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* @param str 待加密字符串
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* @param secret 密钥
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* @return
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*/
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public static byte[] encrypt(String str, String secret) {
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if (null != str) {
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byte[] bytes = null;
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try {
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Base64 base64 = new Base64();
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String ALGORITHM = "AES";
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SecretKey desKey = new SecretKeySpec(secret.getBytes("UTF-8"), ALGORITHM);// 生成密钥
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Cipher c;
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c = Cipher.getInstance(ALGORITHM);
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c.init(Cipher.ENCRYPT_MODE, desKey);
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bytes = c.doFinal(str.getBytes("UTF-8"));
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return bytes;
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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return null;
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}
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/**
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* 解密
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* @param str 待解密字符串
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* @param secret 密钥
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* @return
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*/
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public static byte[] decrypt(byte[] str, String secret) {
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try {
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String ALGORITHM = "AES";
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SecretKey desKey = new SecretKeySpec(secret.getBytes("UTF-8"), ALGORITHM);// 生成密钥
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Cipher c = Cipher.getInstance(ALGORITHM);
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c.init(Cipher.DECRYPT_MODE, desKey);
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return c.doFinal(str);
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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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public static void main(String[] args) throws UnsupportedEncodingException {
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String content = "apiKey=phitabfaceapi&userId=o5W1it6Pvqn6vPX6E1BGERH8J1lw";
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String password = "phitabfacesecret";
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byte[] encode = encrypt(content, password);
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String code = parseByte2HexStr(encode);
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System.out.println("密文字符串：" + code);
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//16进制字符串转成字节数组
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byte[] decode = parseHexStr2Byte(code);
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// 解密
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byte[] decryptResult = decrypt(decode, password);
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System.out.println("解密后：" + new String(decryptResult, "UTF-8")); //不转码会乱码
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}
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}
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