79 lines
3.2 KiB
C#
79 lines
3.2 KiB
C#
using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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namespace HL_FristAidPlatform_Public
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{
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/// <summary>
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/// 加密方法
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/// </summary>
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public class EncryptClass
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{
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private static string iv = "wangchao";
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/// <summary>
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/// 加密密匙 湖南翰林健康科技首拼简写
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/// </summary>
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private static string encryptKey = "hnscjkkj";
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/// <summary>
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/// DES加密字符串
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/// </summary>
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/// <param name="encryptString">待加密的字符串</param>
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/// <param name="encryptKey">加密密钥,要求为8位</param>
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/// <returns>加密成功返回加密后的字符串，失败返回源串</returns>
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public static string EncryptDES(string encryptString)
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{
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string returnStr = string.Empty;
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try
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{
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byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
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byte[] rgbIV = Encoding.UTF8.GetBytes(iv);
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byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
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DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
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dCSP.Mode = CipherMode.CBC;
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dCSP.Padding = PaddingMode.PKCS7;
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MemoryStream mStream = new MemoryStream();
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CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
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cStream.Write(inputByteArray, 0, inputByteArray.Length);
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cStream.FlushFinalBlock();
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returnStr = Convert.ToBase64String(mStream.ToArray());
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}
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catch (Exception ex)
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{
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PublicClass.WriteErrorLog("EncryptClass", "EncryptDES：\r\n" + ex);
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}
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return returnStr;
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}
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/// <summary>
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/// DES解密字符串
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/// </summary>
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/// <param name="decryptString">待解密的字符串</param>
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/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
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/// <returns>解密成功返回解密后的字符串，失败返源串</returns>
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public static string DecryptDES(string decryptString)
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{
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try
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{
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byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey);
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byte[] rgbIV = Encoding.UTF8.GetBytes(iv);
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byte[] inputByteArray = Convert.FromBase64String(decryptString);
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DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
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dCSP.Mode = CipherMode.CBC;
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dCSP.Padding = PaddingMode.PKCS7;
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MemoryStream mStream = new MemoryStream();
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CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
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cStream.Write(inputByteArray, 0, inputByteArray.Length);
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cStream.FlushFinalBlock();
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return Encoding.UTF8.GetString(mStream.ToArray());
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}
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catch (Exception ex)
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{
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PublicClass.WriteErrorLog("EncryptClass", "DecryptDES：\r\n" + ex);
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return decryptString;
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}
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}
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}
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} |