qqq

Context/AESHelp.cs

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+using Microsoft.VisualBasic;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace RB_MES_API.Context
+{
+    /// <summary>
+    /// 密码管理
+    /// </summary>
+    public class AESHelp
+    {
+        private static string appkey = "RB@8636926";
+        /// <summary>
+        /// 加密
+        /// </summary>
+        /// <param name="sourceText">原文</param>
+        /// <returns>密文(Base64字符串)</returns>
+        public static string Encrypt(string sourceText)
+        {
+            return Encrypt(sourceText, appkey);
+        }
+        /// <summary>
+        /// 加密
+        /// Key和IV将被转换为MD5值
+        /// </summary>
+        /// <param name="sourceText">原文</param>
+        /// <param name="sKey">密匙</param>
+        /// <returns>密文(Base64字符串)</returns>
+        private static string Encrypt(string sourceText, string sKey)
+        {
+            var des = DES.Create();
+            byte[] inputByteArray;
+            inputByteArray = Encoding.Default.GetBytes(sourceText);
+            des.Key = Encoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));
+            des.IV = Encoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));
+            MemoryStream ms = new MemoryStream();
+            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
+            cs.Write(inputByteArray, 0, inputByteArray.Length);
+            cs.FlushFinalBlock();
+            StringBuilder ret = new StringBuilder();
+            foreach (byte b in ms.ToArray())
+            {
+                ret.AppendFormat("{0:X2}", b);
+            }
+            ms.Dispose();
+            cs.Dispose();
+            des.Dispose();
+            return ret.ToString();
+        }
+
+
+        /// <summary>
+        /// 解密
+        /// </summary>
+        /// <param name="cipherText">密文</param>
+        /// <returns>原文</returns>
+        public static string Decrypt(string cipherText)
+        {
+            if (!string.IsNullOrEmpty(cipherText))
+            {
+                return Decrypt(cipherText, appkey);
+            }
+            else
+            {
+                return "";
+            }
+        }
+        /// <summary>
+        /// 解密
+        /// </summary>
+        /// <param name="sourceText">加密文本</param>
+        /// <param name="sKey">密匙</param>
+        /// <returns></returns>
+        private static string Decrypt(string sourceText, string sKey)
+        {
+            var des = DES.Create();
+            int len;
+            len = sourceText.Length / 2;
+            byte[] inputByteArray = new byte[len];
+            int x, i;
+            for (x = 0; x < len; x++)
+            {
+                i = Convert.ToInt32(sourceText.Substring(x * 2, 2), 16);
+                inputByteArray[x] = (byte)i;
+            }
+            des.Key = Encoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));
+            des.IV = Encoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));
+            MemoryStream ms = new MemoryStream();
+            CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
+            cs.Write(inputByteArray, 0, inputByteArray.Length);
+            cs.FlushFinalBlock();
+            byte[] msstr = ms.ToArray();
+            cs.Dispose();
+            ms.Dispose();
+            des.Dispose();
+            return Encoding.Default.GetString(msstr);
+        }
+        /// <summary>
+        /// 32位MD5加密
+        /// </summary>
+        /// <param name="input">要转为byte[]的文本</param>
+        /// <returns></returns>
+        private static string Md5Hash(string input)
+        {
+            MD5 md5Hasher = MD5.Create();
+            byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));
+            StringBuilder sBuilder = new StringBuilder();
+            for (int i = 0; i < data.Length; i++)
+            {
+                sBuilder.Append(data[i].ToString("x2"));
+            }
+            md5Hasher.Dispose();
+            return sBuilder.ToString();
+        }
+        /// <summary>
+        /// 金蝶K3、KIS系列用户解密。想要加密算法的，联系13823037922
+        /// </summary>
+        /// <param name="password"></param>
+        /// <returns></returns>
+        public static string K3Decrypt(string password)
+        {
+            if (password == null) return string.Empty;
+            int lenint, ASCInt1, ASCInt2, iMod, i;
+            string UnEncryptStrt, sMidStr;
+            UnEncryptStrt = "";
+            i = 1;
+            iMod = 1;
+
+            password = Strings.Mid(password, 51, (Strings.Len(password) - 50));
+            lenint = Strings.Len(password);
+            while (i < lenint)
+            {
+                sMidStr = Strings.Mid(password, i, 1);
+                ASCInt1 = Strings.Asc(sMidStr);
+                i = i + 1;
+
+                sMidStr = Strings.Mid(password, i, 1);
+                ASCInt2 = Strings.Asc(sMidStr);
+
+                iMod = iMod % 3;
+
+                if (iMod == 1)
+                {
+                    UnEncryptStrt = UnEncryptStrt + Strings.Chr((ASCInt1 - 32) * 64 + ASCInt2 - 32);
+                    i = i + 1;
+                }
+
+                if (iMod == 2)
+                {
+                    UnEncryptStrt = UnEncryptStrt + Strings.Chr((int)((ASCInt1 - 32) * 16 + (ASCInt2 - 32) / (double)4));
+                    i = i + 1;
+                }
+
+                if (iMod == 0)
+                    UnEncryptStrt = UnEncryptStrt + Strings.Chr((int)((ASCInt1 - 32) * 4 + (ASCInt2 - 32) / (double)16));
+
+                i = i + 1;
+                iMod = iMod + 1;
+            }
+
+            return UnEncryptStrt;
+        }
+
+        /// <summary>
+        /// AES 加密
+        /// </summary>
+        /// <param name="str">明文（待加密）</param>
+        /// <param name="key">密文</param>
+        /// <returns></returns>
+        public static string AesEncrypt(string str, string key)
+        {
+            if (string.IsNullOrEmpty(str)) return null;
+            Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);
+
+            var rm = Aes.Create();
+            rm.Key = Encoding.UTF8.GetBytes(key);
+            rm.Mode = CipherMode.ECB;
+            rm.Padding = PaddingMode.PKCS7;
+
+            ICryptoTransform cTransform = rm.CreateEncryptor();
+            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
+
+            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
+        }
+
+        /// <summary>
+        /// AES 解密
+        /// </summary>
+        /// <param name="str">明文（待解密）</param>
+        /// <param name="key">密文</param>
+        /// <returns></returns>
+        public static string AesDecrypt(string str, string key)
+        {
+            if (string.IsNullOrEmpty(str)) return null;
+            Byte[] toEncryptArray = Convert.FromBase64String(str);
+
+            var rm = Aes.Create();
+            rm.Key = Encoding.UTF8.GetBytes(key);
+            rm.Mode = CipherMode.ECB;
+            rm.Padding = PaddingMode.PKCS7;
+
+            ICryptoTransform cTransform = rm.CreateDecryptor();
+            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
+
+            return Encoding.UTF8.GetString(resultArray);
+        }
+    }
+}