// Public Constructors
public Asn1Length( Stream dataStream )
: base()
{
Byte b = ReadByte(dataStream);
if ((b & 0x80) == 0x00)
{
lengthType = Asn1LengthType.SHORT;
// Short Form
length = (UInt32) (b & 0x7F);
}
else
{
length = 0;
// Long Form
UInt32 numLengthOctets = (UInt32) (b & 0x7F);
if (numLengthOctets == 0x00)
{
lengthType = Asn1LengthType.LONG_INDEFINITE;
}
else
{
lengthType = Asn1LengthType.LONG_DEFINITE;
while (numLengthOctets > 0)
{
b = ReadByte(dataStream);
length <<= 8;
length |= b;
numLengthOctets--;
}
}
}
}