public static Mac GetInstance (string name)
{
Mac m = new Mac ();
switch (name.ToUpper ()) {
case "HMACMD5": m.mac = new HMACMD5 (); break;
case "HMACSHA1": m.mac = new HMACSHA1 (); break;
}
if (m.mac == null)
throw new NotSupportedException ();
return m;
}
/// <exception cref="System.Exception"></exception>
public virtual void Init(byte[] key)
{
if (key.Length > 20)
{
byte[] tmp = new byte[20];
System.Array.Copy(key, 0, tmp, 0, 20);
key = tmp;
}
SecretKeySpec skey = new SecretKeySpec(key, "HmacSHA1");
mac = Mac.GetInstance("HmacSHA1");
mac.Init(skey);
}
/// <exception cref="System.Exception"></exception>
public virtual void Init(byte[] key)
{
if (key.Length > BSIZE)
{
byte[] tmp = new byte[BSIZE];
System.Array.Copy(key, 0, tmp, 0, BSIZE);
key = tmp;
}
SecretKeySpec skey = new SecretKeySpec(key, "HmacMD5");
mac = Mac.GetInstance("HmacMD5");
mac.Init(skey);
}
public static Mac GetInstance(string name)
{
Mac m = new Mac();
switch (name.ToUpper())
{
case "HMACMD5": m.mac = new HMACMD5(); break;
case "HMACSHA1": m.mac = new HMACSHA1(); break;
}
if (m.mac == null)
{
throw new NotSupportedException();
}
return(m);
}