/// <summary>
/// 32位md5
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string GetBigMd5(string str)
{
string cl = str;
string pwd = "";
var md5 = MD5.Create();
byte[] s = md5.ComputeHash(Encoding.UTF8.GetBytes(cl));
for (int i = 0; i < s.Length; i++)
{
pwd = pwd + s[i].ToString("X2");
}
return pwd;
}
/// <summary>
/// 16位MD5
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string GetSmallMd5(string str)
{
var md5 = new MD5CryptoServiceProvider();
string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(str)), 4, 8);
t2 = t2.Replace("-", "");
return t2;
}
private static string Encrypt(string strInput)
{
int i;
int len = strInput.Length;
string strFont = strInput.Remove(len - 1, 1);
string strEnd = strInput.Remove(0, len - 1);
var charFont = strFont.ToCharArray();
for (i = 0; i < strFont.Length; i++)
{
int intFont = (int)charFont[i] + 3;
charFont[i] = Convert.ToChar(intFont);
}
strFont = ""; //let strFont null
for (i = 0; i < charFont.Length; i++)
{
strFont += charFont[i];
}
var strOutput = strEnd + strFont;
return strOutput;
}
private static string Decrypt(string strInput)
{
int i;
string strFont = strInput.Remove(0, 1);
string strEnd = strInput.Remove(1);
var charFont = strFont.ToCharArray();
for (i = 0; i < strFont.Length; i++)
{
int intFont = (int)charFont[i] - 3;
charFont[i] = Convert.ToChar(intFont);
}
strFont = ""; //let strFont null
for (i = 0; i < charFont.Length; i++)
{
strFont += charFont[i];
}
string strOutput = strFont + strEnd;
return strOutput;
}
