初始版本

Signed-off-by: ldw <11622064+ldw888@user.noreply.gitee.com>
2025-07-16 18:08:40 +08:00
commit 223e1bb7d1
283 changed files with 116561 additions and 0 deletions
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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JinYuan.Helper
+{
+    /// <summary>
+    /// 字符串加密解密类
+    /// </summary>
+    public class StringSecurityHelper
+    {
+        private static string md5Begin = "Hello";
+        private static string md5End = "World";
+
+        #region SHA1 加密
+
+        /// <summary>
+        /// 使用SHA1加密字符串。
+        /// </summary>
+        /// <param name="inputString">输入字符串。</param>
+        /// <returns>加密后的字符串。（40个字符）</returns>
+        public static string SHA1Encrypt(string inputString)
+        {
+            SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
+            byte[] encryptedBytes = sha1.ComputeHash(Encoding.ASCII.GetBytes(inputString));
+            StringBuilder sb = new StringBuilder();
+            for (int i = 0; i < encryptedBytes.Length; i++)
+            {
+                sb.AppendFormat("{0:x2}", encryptedBytes[i]);
+            }
+            return sb.ToString();
+        }
+
+        #endregion
+
+        #region DES 加密/解密
+
+        private static byte[] key = Encoding.ASCII.GetBytes("uiertysd");
+        private static byte[] iv = Encoding.ASCII.GetBytes("99008855");
+
+        /// <summary>
+        /// DES加密。
+        /// </summary>
+        /// <param name="inputString">输入字符串。</param>
+        /// <returns>加密后的字符串。</returns>
+        public static string DESEncrypt(string inputString)
+        {
+            MemoryStream ms = null;
+            CryptoStream cs = null;
+            StreamWriter sw = null;
+
+            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
+            try
+            {
+                ms = new MemoryStream();
+                cs = new CryptoStream(ms, des.CreateEncryptor(key, iv), CryptoStreamMode.Write);
+                sw = new StreamWriter(cs);
+                sw.Write(inputString);
+                sw.Flush();
+                cs.FlushFinalBlock();
+                return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
+            }
+            finally
+            {
+                if (sw != null) sw.Close();
+                if (cs != null) cs.Close();
+                if (ms != null) ms.Close();
+            }
+        }
+
+        /// <summary>
+        /// DES解密。
+        /// </summary>
+        /// <param name="inputString">输入字符串。</param>
+        /// <returns>解密后的字符串。</returns>
+        public static string DESDecrypt(string inputString)
+        {
+            MemoryStream ms = null;
+            CryptoStream cs = null;
+            StreamReader sr = null;
+
+            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
+            try
+            {
+                ms = new MemoryStream(Convert.FromBase64String(inputString));
+                cs = new CryptoStream(ms, des.CreateDecryptor(key, iv), CryptoStreamMode.Read);
+                sr = new StreamReader(cs);
+                return sr.ReadToEnd();
+            }
+            catch
+            {
+                return string.Empty;
+            }
+            finally
+            {
+                if (sr != null) sr.Close();
+                if (cs != null) cs.Close();
+                if (ms != null) ms.Close();
+            }
+        }
+
+        #endregion
+
+
+        /// <summary>
+        /// MD5加密
+        /// </summary>
+        /// <param name="str">MD5加密前字符串</param>
+        /// <returns>MD5加密后字符串</returns>
+        public static string MD5Encrypt(string str)
+        {
+            str = string.Concat(md5Begin, str, md5End);
+            MD5 md5 = new MD5CryptoServiceProvider();
+            byte[] fromData = Encoding.Unicode.GetBytes(str);
+            byte[] targetData = md5.ComputeHash(fromData);
+            string md5String = string.Empty;
+            foreach (var b in targetData)
+                md5String += b.ToString("x2");
+            return md5String;
+        }
+    }
+}