Luar/moonloader/lib/lockbox/padding/isoiec7816.lua

local Stream = require("lockbox.util.stream");


local ISOIEC7816Padding = function(blockSize,byteCount)

	local paddingCount = blockSize - (byteCount % blockSize);
	local bytesLeft = paddingCount;

	local stream = function()
		if bytesLeft == paddingCount then
			bytesLeft = bytesLeft - 1;
			return 0x80;
		elseif bytesLeft > 0 then
			bytesLeft = bytesLeft - 1;
			return 0x00;
		else
			return nil;
		end
	end

	return stream;

end

return ISOIEC7816Padding;