spring boot使用des算法生成jwt token

引入jwt工具包依赖

<dependency>
			<groupId>io.jsonwebtoken</groupId>
			<artifactId>jjwt</artifactId>
			<version>0.7.0</version>
		</dependency>

2.DesUtil.java

package org.cloud.bank.client.util;

import java.security.SecureRandom;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;

public final class DesUtil {
	
	public static final String DEFAULT_PASSWORD_CRYPT_KEY = "huanghongfei";

	private static final String DES = "DES";
	private static Cipher cipher = null;

	static {
		// Cipher对象实际完成加密操作
		try {
			cipher = Cipher.getInstance(DES);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private DesUtil() {

	}

	public static byte[] encrypt(byte[] src, byte[] key) throws Exception {
		// DES算法要求有一个可信任的随机数源
		SecureRandom sr = new SecureRandom();

		// 从原始密匙数据创建DESKeySpec对象
		DESKeySpec dks = new DESKeySpec(key);

		// 创建一个密匙工厂，然后用它把DESKeySpec转换成
		// 一个SecretKey对象
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
		SecretKey securekey = keyFactory.generateSecret(dks);

		// 用密匙初始化Cipher对象
		cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);

		// 正式执行加密操作
		return cipher.doFinal(src);
	}

	public static byte[] decrypt(byte[] src, byte[] key) throws Exception {

		// DES算法要求有一个可信任的随机数源
		SecureRandom sr = new SecureRandom();

		// 从原始密匙数据创建一个DESKeySpec对象
		DESKeySpec dks = new DESKeySpec(key);

		// 创建一个密匙工厂，然后用它把DESKeySpec对象转换成
		// 一个SecretKey对象
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
		SecretKey securekey = keyFactory.generateSecret(dks);

		// 用密匙初始化Cipher对象
		cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

		// 正式执行解密操作
		return cipher.doFinal(src);
	}

	public static String decrypt(String data) {
		try {
			return new String(decrypt(hex2byte(data.getBytes()),DEFAULT_PASSWORD_CRYPT_KEY.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
			;
		}
		return null;
	}

	public static String decrypt(String data, String key) {
		try {
			return new String(
					decrypt(hex2byte(data.getBytes()), key.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
			;
		}
		return null;
	}

	public static String encrypt(String data) {
		try {
			return byte2hex(encrypt(data.getBytes(),
					DEFAULT_PASSWORD_CRYPT_KEY.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	public static String encrypt(String data, String key) {
		try {
			return byte2hex(encrypt(data.getBytes(), key.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
			;
		}
		return null;
	}

	public static String byte2hex(byte[] b) {
		String hs = "";
		String stmp = "";

		for (int n = 0; n < b.length; n++) {
			stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
			if (stmp.length() == 1) {
				hs = hs + "0" + stmp;
			} else {
				hs = hs + stmp;
			}
		}

		return hs.toUpperCase();
	}

	public static byte[] hex2byte(byte[] b) {
		if ((b.length % 2) != 0) {
			throw new IllegalArgumentException("长度不是偶数");
		}

		byte[] b2 = new byte[b.length / 2];
		for (int n = 0; n < b.length; n += 2) {
			String item = new String(b, n, 2);
			b2[n / 2] = (byte) Integer.parseInt(item, 16);
		}

		return b2;
	}

/*	public static void main(String[] args) {
		String url = "http://hunqijiangzhi.com";
		url = DesUtil.encrypt(url);
		System.out.println(url);
		System.out.println(DesUtil.decrypt(url));
	}*/

}

3.生成jwt token

package org.cloud.bank.client.util;

import java.security.SecureRandom;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;

public final class DesUtil {
	
	public static final String DEFAULT_PASSWORD_CRYPT_KEY = "huanghongfei";

	private static final String DES = "DES";
	private static Cipher cipher = null;

	static {
		// Cipher对象实际完成加密操作
		try {
			cipher = Cipher.getInstance(DES);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private DesUtil() {

	}

	public static byte[] encrypt(byte[] src, byte[] key) throws Exception {
		// DES算法要求有一个可信任的随机数源
		SecureRandom sr = new SecureRandom();

		// 从原始密匙数据创建DESKeySpec对象
		DESKeySpec dks = new DESKeySpec(key);

		// 创建一个密匙工厂，然后用它把DESKeySpec转换成
		// 一个SecretKey对象
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
		SecretKey securekey = keyFactory.generateSecret(dks);

		// 用密匙初始化Cipher对象
		cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);

		// 正式执行加密操作
		return cipher.doFinal(src);
	}

	public static byte[] decrypt(byte[] src, byte[] key) throws Exception {

		// DES算法要求有一个可信任的随机数源
		SecureRandom sr = new SecureRandom();

		// 从原始密匙数据创建一个DESKeySpec对象
		DESKeySpec dks = new DESKeySpec(key);

		// 创建一个密匙工厂，然后用它把DESKeySpec对象转换成
		// 一个SecretKey对象
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
		SecretKey securekey = keyFactory.generateSecret(dks);

		// 用密匙初始化Cipher对象
		cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

		// 正式执行解密操作
		return cipher.doFinal(src);
	}

	public static String decrypt(String data) {
		try {
			return new String(decrypt(hex2byte(data.getBytes()),DEFAULT_PASSWORD_CRYPT_KEY.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
			;
		}
		return null;
	}

	public static String decrypt(String data, String key) {
		try {
			return new String(
					decrypt(hex2byte(data.getBytes()), key.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
			;
		}
		return null;
	}

	public static String encrypt(String data) {
		try {
			return byte2hex(encrypt(data.getBytes(),
					DEFAULT_PASSWORD_CRYPT_KEY.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	public static String encrypt(String data, String key) {
		try {
			return byte2hex(encrypt(data.getBytes(), key.getBytes()));
		} catch (Exception e) {
			e.printStackTrace();
			;
		}
		return null;
	}

	public static String byte2hex(byte[] b) {
		String hs = "";
		String stmp = "";

		for (int n = 0; n < b.length; n++) {
			stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
			if (stmp.length() == 1) {
				hs = hs + "0" + stmp;
			} else {
				hs = hs + stmp;
			}
		}

		return hs.toUpperCase();
	}

	public static byte[] hex2byte(byte[] b) {
		if ((b.length % 2) != 0) {
			throw new IllegalArgumentException("长度不是偶数");
		}

		byte[] b2 = new byte[b.length / 2];
		for (int n = 0; n < b.length; n += 2) {
			String item = new String(b, n, 2);
			b2[n / 2] = (byte) Integer.parseInt(item, 16);
		}

		return b2;
	}

/*	public static void main(String[] args) {
		String url = "http://hunqijiangzhi.com";
		url = DesUtil.encrypt(url);
		System.out.println(url);
		System.out.println(DesUtil.decrypt(url));
	}*/

}