/// <summary>
/// DES AES Blowfish
/// 对称加密算法的优点是速度快，
/// 缺点是密钥管理不方便，要求共享密钥。
/// 可逆对称加密 密钥长度8
/// </summary>
using System.Security.Cryptography;
public class DesEncrypt
{
//8位长度
private static string KEY = "ruanmou1";
private static byte[] rgbKey = ASCIIEncoding.ASCII.GetBytes(KEY.Substring(0, 8));
private static byte[] rgbIV = ASCIIEncoding.ASCII.GetBytes(KEY.Insert(0, "w").Substring(0, 8));
/// <summary>
/// DES 加密
/// </summary>
/// <param name="strValue"></param>
/// <returns></returns>
public static string Encrypt(string strValue)
{
DESCryptoServiceProvider dsp = new DESCryptoServiceProvider();
using (MemoryStream memStream = new MemoryStream())
{
CryptoStream crypStream = new CryptoStream(memStream, dsp.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
StreamWriter sWriter = new StreamWriter(crypStream);
sWriter.Write(strValue);
sWriter.Flush();
crypStream.FlushFinalBlock();
memStream.Flush();
return Convert.ToBase64String(memStream.GetBuffer(), 0, (int)memStream.Length);
}
}
/// <summary>
/// DES解密
/// </summary>
/// <param name="EncValue"></param>
/// <returns></returns>
public static string Decrypt(string EncValue)
{
DESCryptoServiceProvider dsp = new DESCryptoServiceProvider();
byte[] buffer = Convert.FromBase64String(EncValue);
using (MemoryStream memStream = new MemoryStream())
{
CryptoStream crypStream = new CryptoStream(memStream, dsp.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
crypStream.Write(buffer, 0, buffer.Length);
crypStream.FlushFinalBlock();
return ASCIIEncoding.UTF8.GetString(memStream.ToArray());
}
}
}
string desEn1 = DesEncrypt.Encrypt("张三李四");
string desDe1 = DesEncrypt.Decrypt(desEn1);
