StableVersion4.3/HL_FristAidPlatform_Public/Public/EncryptClass.cs

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