public void Test_DER_HighTagNumberForm()
{
Console.WriteLine("TODO");
// 129 je (1, 1)_128
// 16385 je (1, 0, 1)_128
SimpleASN1TAG t = new SimpleASN1TAG(16385);
byte[] tmp = DERMethods.MakeTagOctets(t);
Console.Write("\n16385 => ");
foreach(byte b in tmp)
{
Console.Write(String.Format("{0}:", b.ToString("X")).PadLeft(3, '0'));
}
// 2097153 je (1, 0, 0, 1)_128
t = new SimpleASN1TAG(2097153);
tmp = DERMethods.MakeTagOctets(t);
Console.Write("\n2097153 => ");
foreach(byte b in tmp)
{
Console.Write(String.Format("{0}:", b.ToString("X")).PadLeft(3, '0'));
}
//98238472
t = new SimpleASN1TAG(98238472);
tmp = DERMethods.MakeTagOctets(t);
Console.Write("\n98238472 (2e, 6c, 00, 08)_128 => ");
foreach(byte b in tmp)
{
Console.Write(String.Format("{0}:", b.ToString("X")).PadLeft(3, '0'));
}
Console.WriteLine();
}
private bool MatchWithSimpleTag(SimpleASN1TAG simpleTag)
{
byte[] tmpTagOctets = DERMethods.MakeTagOctets(simpleTag);
for(int i=0; i<this.lenStart; i++)
{
if (tmpTagOctets[i]!=this.derBytes[i]) {
return false;
}
}
return true;
}
public MiddleDERNode(SimpleASN1TAG tag, ArrayList children):base(tag, children) {}
public TLVValueNode(SimpleASN1TAG tag, byte[] valueOctets)
{
TAG = tag;
_ValueOctets = valueOctets;
innerLength = valueOctets.Length;
}
protected TLVNode(SimpleASN1TAG tag, ArrayList children)
{
TAG = tag;
Children = children;
}
public static byte[] MakeTagOctets(SimpleASN1TAG tag)
{
/// treba odrediti koliki je int.
/// Za ("tagnumber<32") dovoljan je prvi oktet,
/// (to je 5 raspolozivih bitova)
byte[] returnByteArray;
if (tag.tagValue < 0x1f)
{
returnByteArray = new byte[]{Convert.ToByte(tag.tagValue)};
}
else
{
/* nisam siguran da sam ikad usao u ovu granu koda... */
/// high tag number form
/// zapisan u bazi 128, pocevsi od drugog byte-a.d
/// Prvi byte je oblika "---1 1111"
/// Svi osim zadnjeg od drugog nadalje su oblika
/// "0--- ----"
/// Zadnji je oblika
/// "1--- ----"
///
/// Zasad pretpostavljam da je tag number MaxInt
int ulazTagNumber = tag.tagValue;
ArrayList b = new ArrayList();
//HACK: jednom to ljepse srediti..
b.Insert(0, Convert.ToByte((ulazTagNumber & 0x0000007f) | 0x80)); // ovo je zadnji...
b.Insert(0, Convert.ToByte((ulazTagNumber>> 7) & (0x7f)));
b.Insert(0, Convert.ToByte((ulazTagNumber>>14) & (0x7f)));
b.Insert(0, Convert.ToByte((ulazTagNumber>>21) & (0x7f)));
b.Insert(0, Convert.ToByte((ulazTagNumber>>28) & (0x7f)));
while ((byte)b[0]==0)
{
b.RemoveAt(0);
}
b.Insert(0, (byte)0x1f);
// Ovo je najjednostavniji nacin - koliko znam - za prepisati
// ArrayList u odgovarajuce polje.
returnByteArray = b.ToArray(typeof(byte)) as byte[];
}
/// apply encoding class number:
returnByteArray[0] |= (byte) tag.encodingClass;
if (tag.ConstructedBitOn)
{
returnByteArray[0]|= (byte) 0x20;
}
return returnByteArray;
}
public override SimpleASN1TAG ExtractSimpleOuterTag()
{
SimpleASN1TAG returnTag;
//TODO:
returnTag = new SimpleASN1TAG(t, this.encodingClass); //+ ContextDependent
return returnTag;
}
