/// <summary>
/// 字符串简单加密（DES算法），字符串长度尽量控制在 64 个字符内。
/// 使用默认的加密向量和加密密钥
/// </summary>
/// <param name="AStrSource">需要加密的字符串</param>
/// <returns>如果返回值 与 传入的值 相等，则说明加密失败</returns>
public static string EncryptStringY(string AStrSource)
{
string LStrReturn = string.Empty;
try
{
DESCryptoServiceProvider LDESCrypto = new DESCryptoServiceProvider();
byte[] LByteArraySource = Encoding.Unicode.GetBytes(AStrSource);
LDESCrypto.Key = UnicodeEncoding.ASCII.GetBytes(CreateMD5HashString("Y0ungEncryptKEY").Substring(0, 8));
LDESCrypto.IV = UnicodeEncoding.ASCII.GetBytes(CreateMD5HashString("Y0ungEncryptIV").Substring(0, 8));
MemoryStream LMemoryStream = new MemoryStream();
CryptoStream LCryptoStream = new CryptoStream(LMemoryStream, LDESCrypto.CreateEncryptor(), CryptoStreamMode.Write);
LCryptoStream.Write(LByteArraySource, 0, LByteArraySource.Length);
LCryptoStream.FlushFinalBlock();
StringBuilder LStrBuilder = new StringBuilder();
foreach (byte LByte in LMemoryStream.ToArray())
{
LStrBuilder.Append(LByte.ToString("X2").ToUpper());
}
LStrReturn = LStrBuilder.ToString();
}
catch { LStrReturn = AStrSource; }
return(LStrReturn);
}
/// <summary>
/// 将输入的字符串转换成32位的hash值
/// </summary>
/// <param name="AStrPassword"></param>
/// <returns></returns>
private static string CreateMD5HashString(string AStrPassword)
{
string LStrHashPassword = string.Empty;
try
{
MD5CryptoServiceProvider LMD5Crypto = new MD5CryptoServiceProvider();
byte[] LByteArray = Encoding.Unicode.GetBytes(AStrPassword);
LByteArray = LMD5Crypto.ComputeHash(LByteArray);
StringBuilder LStrBuilder = new StringBuilder();
foreach (byte LByte in LByteArray)
{
LStrBuilder.Append(LByte.ToString("X2").ToUpper());
}
LStrHashPassword = LStrBuilder.ToString();
}
catch { LStrHashPassword = "******"; }
return(LStrHashPassword);
}
