/*
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* Copyright (c) 2018-2028, DreamLu All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: DreamLu 卢春梦 (596392912@qq.com)
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*/
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package org.springblade.core.tool.utils;
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import org.springframework.lang.Nullable;
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import org.springframework.util.DigestUtils;
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import javax.crypto.Mac;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.SecretKeySpec;
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import java.security.InvalidKeyException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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/**
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* 加密相关工具类直接使用Spring util封装，减少jar依赖
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*
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* @author L.cm
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*/
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public class DigestUtil extends org.springframework.util.DigestUtils {
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private static final char[] HEX_CODE = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
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/**
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* Calculates the MD5 digest and returns the value as a 32 character hex string.
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*
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* @param data Data to digest
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* @return MD5 digest as a hex string
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*/
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public static String md5Hex(final String data) {
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return DigestUtils.md5DigestAsHex(data.getBytes(Charsets.UTF_8));
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}
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/**
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* Return a hexadecimal string representation of the MD5 digest of the given bytes.
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*
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* @param bytes the bytes to calculate the digest over
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* @return a hexadecimal digest string
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*/
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public static String md5Hex(final byte[] bytes) {
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return DigestUtils.md5DigestAsHex(bytes);
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}
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/**
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* sha1Hex
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*
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* @param data Data to digest
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* @return digest as a hex string
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*/
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public static String sha1Hex(String data) {
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return DigestUtil.sha1Hex(data.getBytes(Charsets.UTF_8));
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}
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/**
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* sha1Hex
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*
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* @param bytes Data to digest
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* @return digest as a hex string
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*/
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public static String sha1Hex(final byte[] bytes) {
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return DigestUtil.digestHex("SHA-1", bytes);
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}
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/**
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* SHA224Hex
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*
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* @param data Data to digest
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* @return digest as a hex string
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*/
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public static String sha224Hex(String data) {
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return DigestUtil.sha224Hex(data.getBytes(Charsets.UTF_8));
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}
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/**
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* SHA224Hex
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*
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* @param bytes Data to digest
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* @return digest as a hex string
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*/
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public static String sha224Hex(final byte[] bytes) {
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return DigestUtil.digestHex("SHA-224", bytes);
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}
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/**
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* sha256Hex
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*
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* @param data Data to digest
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* @return digest as a hex string
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*/
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public static String sha256Hex(String data) {
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return DigestUtil.sha256Hex(data.getBytes(Charsets.UTF_8));
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}
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/**
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* sha256Hex
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*
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* @param bytes Data to digest
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* @return digest as a hex string
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*/
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public static String sha256Hex(final byte[] bytes) {
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return DigestUtil.digestHex("SHA-256", bytes);
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}
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/**
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* sha384Hex
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*
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* @param data Data to digest
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* @return digest as a hex string
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*/
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public static String sha384Hex(String data) {
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return DigestUtil.sha384Hex(data.getBytes(Charsets.UTF_8));
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}
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/**
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* sha384Hex
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*
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* @param bytes Data to digest
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* @return digest as a hex string
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*/
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public static String sha384Hex(final byte[] bytes) {
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return DigestUtil.digestHex("SHA-384", bytes);
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}
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/**
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* sha512Hex
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*
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* @param data Data to digest
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* @return digest as a hex string
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*/
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public static String sha512Hex(String data) {
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return DigestUtil.sha512Hex(data.getBytes(Charsets.UTF_8));
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}
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/**
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* sha512Hex
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*
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* @param bytes Data to digest
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* @return digest as a hex string
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*/
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public static String sha512Hex(final byte[] bytes) {
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return DigestUtil.digestHex("SHA-512", bytes);
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}
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/**
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* digest Hex
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*
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* @param algorithm 算法
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* @param bytes Data to digest
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* @return digest as a hex string
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*/
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public static String digestHex(String algorithm, byte[] bytes) {
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try {
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MessageDigest md = MessageDigest.getInstance(algorithm);
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return encodeHex(md.digest(bytes));
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} catch (NoSuchAlgorithmException e) {
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throw Exceptions.unchecked(e);
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}
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}
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/**
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* hmacMd5 Hex
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*
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* @param data Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacMd5Hex(String data, String key) {
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return DigestUtil.hmacMd5Hex(data.getBytes(Charsets.UTF_8), key);
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}
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/**
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* hmacMd5 Hex
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*
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* @param bytes Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacMd5Hex(final byte[] bytes, String key) {
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return DigestUtil.digestHMacHex("HmacMD5", bytes, key);
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}
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/**
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* hmacSha1 Hex
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*
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* @param data Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha1Hex(String data, String key) {
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return DigestUtil.hmacSha1Hex(data.getBytes(Charsets.UTF_8), key);
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}
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/**
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* hmacSha1 Hex
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*
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* @param bytes Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha1Hex(final byte[] bytes, String key) {
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return DigestUtil.digestHMacHex("HmacSHA1", bytes, key);
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}
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/**
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* hmacSha224 Hex
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*
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* @param data Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha224Hex(String data, String key) {
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return DigestUtil.hmacSha224Hex(data.getBytes(Charsets.UTF_8), key);
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}
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/**
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* hmacSha224 Hex
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*
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* @param bytes Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha224Hex(final byte[] bytes, String key) {
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return DigestUtil.digestHMacHex("HmacSHA224", bytes, key);
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}
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/**
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* hmacSha256
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*
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* @param data Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static byte[] hmacSha256(String data, String key) {
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return DigestUtil.hmacSha256(data.getBytes(Charsets.UTF_8), key);
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}
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/**
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* hmacSha256
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*
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* @param bytes Data to digest
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* @param key key
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* @return digest as a byte array
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*/
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public static byte[] hmacSha256(final byte[] bytes, String key) {
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return DigestUtil.digestHMac("HmacSHA256", bytes, key);
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}
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/**
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* hmacSha256 Hex
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*
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* @param data Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha256Hex(String data, String key) {
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return DigestUtil.hmacSha256Hex(data.getBytes(Charsets.UTF_8), key);
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}
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/**
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* hmacSha256 Hex
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*
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* @param bytes Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha256Hex(final byte[] bytes, String key) {
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return DigestUtil.digestHMacHex("HmacSHA256", bytes, key);
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}
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/**
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* hmacSha384 Hex
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*
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* @param data Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha384Hex(String data, String key) {
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return DigestUtil.hmacSha384Hex(data.getBytes(Charsets.UTF_8), key);
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}
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/**
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* hmacSha384 Hex
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*
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* @param bytes Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha384Hex(final byte[] bytes, String key) {
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return DigestUtil.digestHMacHex("HmacSHA384", bytes, key);
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}
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/**
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* hmacSha512 Hex
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*
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* @param data Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha512Hex(String data, String key) {
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return DigestUtil.hmacSha512Hex(data.getBytes(Charsets.UTF_8), key);
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}
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/**
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* hmacSha512 Hex
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*
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* @param bytes Data to digest
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* @param key key
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* @return digest as a hex string
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*/
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public static String hmacSha512Hex(final byte[] bytes, String key) {
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return DigestUtil.digestHMacHex("HmacSHA512", bytes, key);
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}
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/**
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* digest HMac Hex
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*
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* @param algorithm 算法
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* @param bytes Data to digest
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* @return digest as a hex string
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*/
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public static String digestHMacHex(String algorithm, final byte[] bytes, String key) {
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SecretKey secretKey = new SecretKeySpec(key.getBytes(Charsets.UTF_8), algorithm);
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try {
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Mac mac = Mac.getInstance(secretKey.getAlgorithm());
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mac.init(secretKey);
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return DigestUtil.encodeHex(mac.doFinal(bytes));
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} catch (NoSuchAlgorithmException | InvalidKeyException e) {
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throw Exceptions.unchecked(e);
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}
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}
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/**
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* digest HMac
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*
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* @param algorithm 算法
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* @param bytes Data to digest
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* @return digest as a byte array
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*/
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public static byte[] digestHMac(String algorithm, final byte[] bytes, String key) {
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SecretKey secretKey = new SecretKeySpec(key.getBytes(Charsets.UTF_8), algorithm);
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try {
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Mac mac = Mac.getInstance(secretKey.getAlgorithm());
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mac.init(secretKey);
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return mac.doFinal(bytes);
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} catch (NoSuchAlgorithmException | InvalidKeyException e) {
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throw Exceptions.unchecked(e);
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}
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}
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/**
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* encode Hex
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*
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* @param bytes Data to Hex
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* @return bytes as a hex string
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*/
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public static String encodeHex(byte[] bytes) {
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StringBuilder r = new StringBuilder(bytes.length * 2);
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for (byte b : bytes) {
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r.append(HEX_CODE[(b >> 4) & 0xF]);
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r.append(HEX_CODE[(b & 0xF)]);
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}
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return r.toString();
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}
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/**
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* decode Hex
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*
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* @param hexStr Hex string
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* @return decode hex to bytes
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*/
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public static byte[] decodeHex(final String hexStr) {
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return DatatypeConverterUtil.parseHexBinary(hexStr);
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}
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/**
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* 比较字符串，避免字符串因为过长，产生耗时
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*
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* @param a String
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* @param b String
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* @return 是否相同
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*/
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public static boolean slowEquals(@Nullable String a, @Nullable String b) {
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if (a == null || b == null) {
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return false;
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}
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return DigestUtil.slowEquals(a.getBytes(Charsets.UTF_8), b.getBytes(Charsets.UTF_8));
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}
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/**
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* 比较 byte 数组，避免字符串因为过长，产生耗时
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*
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* @param a byte array
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* @param b byte array
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* @return 是否相同
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*/
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public static boolean slowEquals(@Nullable byte[] a, @Nullable byte[] b) {
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if (a == null || b == null) {
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return false;
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}
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if (a.length != b.length) {
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return false;
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}
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int diff = a.length ^ b.length;
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for (int i = 0; i < a.length; i++) {
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diff |= a[i] ^ b[i];
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}
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return diff == 0;
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}
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/**
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* 自定义加密 将前端传递的密码再次加密
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*
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* @param data 数据
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* @return {String}
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*/
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public static String hex(String data) {
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if (StringUtil.isBlank(data)) {
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return StringPool.EMPTY;
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}
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return sha1Hex(data);
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}
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/**
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* 用户密码加密规则 先MD5再SHA1
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*
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* @param data 数据
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* @return {String}
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*/
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public static String encrypt(String data) {
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if (StringUtil.isBlank(data)) {
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return StringPool.EMPTY;
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}
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return sha1Hex(md5Hex(data));
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}
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}
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