密码管理
大家一定对自己的密码时刻保持的警惕，谁都不想让自己的密码轻易的让第二个人知道，随着互联网的不断发展，大家在各种各样的平台设置密码，随着而来的密码安全问题，又一次来到我们的视线，如何保护自己的注册用户的个人密码安全，相信所有平台都一直在努力。记得前段时间网上曝出小米网的数据库被盗了，估计很多人听到这个消息，死的心都有了，不过好的是小米公司一开始就对密码安全做了处理，以至于虽然数据被盗了，但你的密码仍然是加密的。通过这件事我更加认识到密码安全的重要性，所以现在就把我刚刚写的一个数据加密的算法分享给大家。
加密算法：
public class ALG {
int m ;
String mima="";
char [] pa = new char [10];
char [] pawd = new char [10];
char [] abc = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
char [] ABC = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
char [] num = {'0','1','2','3','4','5','6','7','8','9'};
public String getEncrypt(String pass){
int len = pass.length();
for(int i=0; i<len; i++){
pa[i]=pass.charAt(i);
/**
* 判断密码中是否存在特殊字符
*/
switch (pa[i]) {
case '~':
return mima;
case '`':
return mima;
case '!':
return mima;
case '#':
return mima;
case '$':
return mima;
case '%':
return mima;
case '^':
return mima;
case '&':
return mima;
case '*':
return mima;
case '(':
return mima;
case ')':
return mima;
case '-':
return mima;
case '_':
return mima;
case '+':
return mima;
case '=':
return mima;
case '|':
return mima;
case '\\':
return mima;
case '、':
return mima;
case '{':
return mima;
case '}':
return mima;
case '【':
return mima;
case '】':
return mima;
case '[':
return mima;
case ']':
return mima;
case ';':
return mima;
case '；':
return mima;
case ':':
return mima;
case '：':
return mima;
case '‘':
return mima;
case '’':
return mima;
case '\'':
return mima;
case '“':
return mima;
case '”':
return mima;
case '<':
return mima;
case '>':
return mima;
case '?':
return mima;
case ',':
return mima;
case '，':
return mima;
case '。':
return mima;
case '.':
return mima;
case '/':
return mima;
case ' ':
return mima;
}
}
for(int j=0; j<len; j++){
for(int a=0; a<abc.length; a++){
if(pa[j]==abc[a]){
m = (a+5)%26;
mima = mima + ABC[m];
}
}
for(int A=0; A<ABC.length; A++){
if(pa[j]==ABC[A]){
m = (A+5)%26;
mima = mima + abc[m];
}
}
for(int n=0; n<num.length; n++){
if(pa[j]==num[n]){
m = (n+3)%10;
mima = mima + num[m];
}
}
if(pa[j]=='@'){
mima = mima + "_!#!";
}
}
int length = mima.length();
for(int i=0; i<length; i++){
pawd[i]=mima.charAt(i);
}
mima = "";
for(int i=length-1; i>=0; i--){
mima = mima + pawd[i];
}
return mima;
}
}
之前我是用jsp测试的，所以我把select和jsp都给大家分享一下
select代码：
public class encrypt extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
String pass = request.getParameter("pass");
ALG alg = new ALG();
String mima = alg.getEncrypt(pass);
if(!mima.equals("")){
request.setAttribute("pass", pass);
request.setAttribute("mima", mima);
request.getRequestDispatcher("encrypt.jsp").forward(request, response);
}else{
request.setAttribute("pass", pass);
request.setAttribute("news", "密码请不要包含特殊字符！");
request.getRequestDispatcher("index.jsp").forward(request, response);
// response.sendRedirect("index.jsp");
}
}
}
index.jsp代码：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>密码加密</title>
<%String news = (String)request.getAttribute("news");String pass = (String)request.getAttribute("pass"); %>
</head>
<body>
<form action="encrypt.html" method="post">
密码：<input type="text" name="pass" value="<%if(pass!=null){%><%=pass%><%} %>"><%if(news!=null){ %> <%=news%> <%} %>
<input type="submit" value="加密">
</form>
</body>
</html>
encrypt.jsp代码：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>密码加密</title>
<%String mima = (String)request.getAttribute("mima");String pass = (String)request.getAttribute("pass"); %>
</head>
<body>
<h1>密码：<%=pass %></h1>
<h1>加密结果：<%=mima %></h1>
</body>
</html>
功底有限，仅仅是一个很简单的加密算法，大家欣赏之余，如有更好的思路，还望赐教。
--------------------以上如有不妥，请留言。谢谢-----------------------
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