package com.example.jz.utils;
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import java.io.UnsupportedEncodingException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.util.Base64;
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/**
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* @author 安瑾然
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* @data 2022/7/18 - 10:52 AM
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* @description 加密工具类
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*/
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public class Md5Utils {
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public static String md5(String str) {
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try {
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MessageDigest md = MessageDigest.getInstance("MD5");
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md.update(str.getBytes());
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byte b[] = md.digest();
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str = byteToStr(b);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return str;
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}
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public static String byteToStr(byte[] b){
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int i;
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StringBuffer buf = new StringBuffer("");
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for (int offset = 0; offset < b.length; offset++) {
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i = b[offset];
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//System.out.println(i);
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if (i < 0)
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i += 256;
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if (i < 16)
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buf.append("0");
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buf.append(Integer.toHexString(i));
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}
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return buf.toString();
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}
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/**
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* 传入文本内容，返回 SHA-256 串
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*
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* @param strText
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* @return
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*/
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public static String SHA256(final String strText)
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{
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return SHA(strText, "SHA-256");
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}
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public static String SHA1(final String strText)
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{
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return SHA(strText, "SHA-1");
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}
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/**
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* 传入文本内容，返回 SHA-512 串
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*
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* @param strText
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* @return
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*/
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public static String SHA512(final String strText)
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{
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return SHA(strText, "SHA-512");
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}
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/**
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* 字符串 SHA 加密
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*
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* @param strText
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* @return
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*/
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private static String SHA(final String strText, final String strType)
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{
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// 返回值
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String strResult = null;
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// 是否是有效字符串
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if (strText != null && strText.length() > 0)
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{
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try
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{
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// SHA 加密开始
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MessageDigest messageDigest = MessageDigest.getInstance(strType);
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// 传入要加密的字符串
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messageDigest.update(strText.getBytes("utf-8"));
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// 得到 byte 类型的结果
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byte byteBuffer[] = messageDigest.digest();
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strResult = byteToStr(byteBuffer);
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}
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catch (NoSuchAlgorithmException e)
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{
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e.printStackTrace();
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}catch (UnsupportedEncodingException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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}
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return strResult;
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}
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public static String base64(String str){
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String baseStr = null;
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Base64.Encoder encoder = Base64.getEncoder();
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byte[] textByte;
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try {
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textByte = str.getBytes("UTF-8");
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baseStr = encoder.encodeToString(textByte);
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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return baseStr;
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}
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public static void main(String[] args) {
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String password = "bunana1";
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System.out.println(md5(password));
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//String base64 = base64(sha512);
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//System.out.println(base64);
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//String pwd1 = md5(base64);
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//System.out.println(pwd1);
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}
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}
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