/// <summary>

/// 用MD5加密字符串，可选择生成16位或者32位的加密字符串

/// </summary>

/// <param name="password">待加密的字符串</param>

/// <param name="bit">位数，一般取值16 或 32</param>

/// <returns>返回的加密后的字符串</returns>

public string MD5Encrypt(string password, int bit)

{

MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();

byte[] hashedDataBytes;

hashedDataBytes = md5Hasher.ComputeHash(Encoding.GetEncoding("gb2312").GetBytes(password));

StringBuilder tmp = new StringBuilder();

foreach (byte i in hashedDataBytes)

{

tmp.Append(i.ToString("x2"));

}

if (bit == )

return tmp.ToString().A(, );

else

if (bit == ) return tmp.ToString();//默认情况

else return string.Empty;

}

/// <summary>

/// 用MD5加密字符串

/// </summary>

/// <param name="password">待加密的字符串</param>

/// <returns></returns>

public string MD5Encrypt(string password)

{

MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();

byte[] hashedDataBytes;

hashedDataBytes = md5Hasher.ComputeHash(Encoding.GetEncoding("gb2312").GetBytes(password));

StringBuilder tmp = new StringBuilder();

foreach (byte i in hashedDataBytes)

{

tmp.Append(i.ToString("x2"));

}

return tmp.ToString();

}