From 5d7b65670282a4fad015e37d567cfa171b162052 Mon Sep 17 00:00:00 2001
From: huliguo <2023611923@qq.com>
Date: 星期二, 20 五月 2025 12:25:19 +0800
Subject: [PATCH] 基础代码
---
pt-errand/src/main/java/com/ruoyi/errand/utils/MD5AndKL.java | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 112 insertions(+), 0 deletions(-)
diff --git a/pt-errand/src/main/java/com/ruoyi/errand/utils/MD5AndKL.java b/pt-errand/src/main/java/com/ruoyi/errand/utils/MD5AndKL.java
new file mode 100644
index 0000000..0b82932
--- /dev/null
+++ b/pt-errand/src/main/java/com/ruoyi/errand/utils/MD5AndKL.java
@@ -0,0 +1,112 @@
+package com.ruoyi.errand.utils;
+
+import java.security.MessageDigest;
+
+public class MD5AndKL {
+
+ /**
+ * MD5加码。32位
+ *
+ * @param inStr
+ * @return
+ */
+ public static String MD5(String inStr) {
+ MessageDigest md5 = null;
+ try {
+ md5 = MessageDigest.getInstance("MD5");
+ } catch (Exception e) {
+ throw new RuntimeException(e.toString());
+ }
+ byte[] md5Bytes = md5.digest(inStr.getBytes());
+ StringBuffer hexValue = new StringBuffer();
+ for (int i = 0; i < md5Bytes.length; i++) {
+ int val = ((int) md5Bytes[i]) & 0xff;
+ if (val < 16) {
+ hexValue.append("0");
+ }
+ hexValue.append(Integer.toHexString(val));
+ }
+ return hexValue.toString();
+ }
+
+ /**
+ * 可逆的加密算法
+ *
+ * @param inStr
+ * @return
+ */
+ public static String KL(String inStr) {
+ char[] a = inStr.toCharArray();
+ for (int i = 0; i < a.length; i++) {
+ a[i] = (char) (a[i] ^ 't');
+ }
+ String s = new String(a);
+ return s;
+ }
+
+ /**
+ * 加密后解密
+ *
+ * @param inStr
+ * @return
+ */
+ public static String JM(String inStr) {
+ char[] a = inStr.toCharArray();
+ for (int i = 0; i < a.length; i++) {
+ a[i] = (char) (a[i] ^ 't');
+ }
+ String k = new String(a);
+ return k;
+ }
+
+
+
+ private static String byteArrayToHexString(byte b[]) {
+ StringBuffer resultSb = new StringBuffer();
+ for (int i = 0; i < b.length; i++)
+ resultSb.append(byteToHexString(b[i]));
+
+ return resultSb.toString();
+ }
+
+ private static String byteToHexString(byte b) {
+ int n = b;
+ if (n < 0)
+ n += 256;
+ int d1 = n / 16;
+ int d2 = n % 16;
+ return hexDigits[d1] + hexDigits[d2];
+ }
+
+ public static String MD5Encode(String origin, String charsetname) {
+ String resultString = null;
+ try {
+ resultString = new String(origin);
+ MessageDigest md = MessageDigest.getInstance("MD5");
+ if (charsetname == null || "".equals(charsetname)){
+ resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
+ }else{
+ resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
+ }
+ } catch (Exception exception) {
+ exception.printStackTrace();
+ }
+ return resultString;
+ }
+
+ private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5",
+ "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
+
+ public static void main(String args[]) {
+
+ System.out.println("MD5后再加密：" + KL(MD5("123456")));
+ System.out.println(MD5("123456"));
+ // System.out.println("加密：" + KL(MD5("123456")));
+ // s = KL(s);
+ // System.out.println("解密：" + KL("81dc9bdb52d04dc20036dbd8313ed055"));
+ // System.out.println("解密：" + JM(KL(s)));
+ // System.out.println("解密为MD5后的：" + KL(KL(MD5(s))));
+ // System.out.println(JM("5d62957bb57d3e49dcf48a0df064be4c"));
+ // System.out.println(MD5AndKL.KL(MD5AndKL.MD5("admin"+"87654321")));
+ }
+}
--
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