worked on file io

src/encrypt.lua

@@ -20,7 +20,6 @@ local insert, concat, modf, tostring, char = table.insert, table.concat, math.mo
 local w=64 --length of a word in bits
 local u=8 --length of a word in bytes
 local r=24
---local key="globglogabgalab1"
 local key="0000000000000000"
 local b=16 --length of the key in bytes
 --local c=2 (with globglogabgalab1 as the key c should =2)
@@ -31,11 +30,32 @@ local L = {}
 --length of the key in words
 c = math.ceil(math.max(b, 1) / u)
 L = K
-
 --magic constants for 64bit word size (hex)
 local P = 0xb7e151628aed2a6b
 local Q = 0x9e3779b97f4a7c15
 
+--[[
+main loop
+read in file in 1 block bytes
+this will work for files under 1MB for larger files 
+once the table reaches 512kb, encrypt it, and put it 
+into tmp files. once all of the data has been encrypted 
+stitch together all the tmp files
+
+local bytes = {}
+file = assert(io.open(arg[1], "rb"))
+block = 1 --blocks of 1 byte
+while true do
+    local byte = file:read(block)
+    if byte == nil then
+        break
+    else
+        bytes[#bytes+1] = string.byte(byte)
+    end
+end
+file:close()
+]]
+
 local S = {}
 S[0] = P	--initialize the S array
 for i = 1, t do