[proxmark3-svn] / client / lualibs / utils.lua

--[[\r
	This may be moved to a separate library at some point (Holiman)\r
--]]\r
local Utils = \r
{\r
	-- Asks the user for Yes or No\r
	confirm = function(message, ...)\r
		local answer\r
		message = message .. " [y/n] ?"\r
		repeat\r
			io.write(message)\r
			io.flush()\r
			answer=io.read()\r
			if answer == 'Y' or answer == "y" then\r
				return true\r
			elseif answer == 'N' or answer == 'n' then \r
				return false\r
			end\r
		until false\r
	end,\r
	---\r
	-- Asks the user for input\r
	input = function (message , default)\r
		local answer\r
		if default ~= nil then\r
			message = message .. " (default: ".. default.. " )"\r
		end\r
		message = message .." \n > "\r
		io.write(message)\r
		io.flush()\r
		answer=io.read()\r
		if answer == '' then answer = default end\r
\r
		return answer\r
	end,\r
	\r
	------------ FILE READING\r
	ReadDumpFile = function (filename)\r
	\r
		filename = filename or 'dumpdata.bin'\r
		if #filename == 0 then\r
			return nil, 'Filename length is zero'\r
		end\r
\r
		infile = io.open(filename, "rb")\r
		if infile == nil then \r
			return nil, string.format("Could not read file %s",filename)\r
		end\r
		local t = infile:read("*all")\r
		len = string.len(t)\r
		local  _,hex = bin.unpack(("H%d"):format(len),t)\r
		io.close(infile)\r
		return hex\r
	end,\r
	\r
	------------ string split function\r
	Split = function( inSplitPattern, outResults )\r
		if not outResults then\r
			outResults = {}\r
		end\r
		local start = 1\r
		local splitStart, splitEnd = string.find( self, inSplitPattern, start )\r
		while splitStart do\r
			table.insert( outResults, string.sub( self, start, splitStart-1 ) )\r
			start = splitEnd + 1\r
			splitStart, splitEnd = string.find( self, inSplitPattern, start )\r
		end\r
		table.insert( outResults, string.sub( self, start ) )\r
		return outResults\r
	end,\r
	\r
	----ISO14443-B CRC\r
	Crc14b = function(s)\r
		if s == nil then return nil end\r
		if #s == 0 then return nil end\r
		if  type(s) == 'string' then\r
			local utils = require('utils')\r
			return utils.ConvertAsciiToHex(\r
							core.iso14443b_crc(s)\r
							)\r
		end\r
		return nil		\r
	end,\r
	\r
	------------ CRC-8 Legic checksums\r
	-- Takes a hex string and calculates a crc8\r
	Crc8Legic = function(s)\r
		if s == nil then return nil end\r
		if #s == 0 then return nil end\r
		if  type(s) == 'string' then\r
			local utils = require('utils')\r
			local asc = utils.ConvertHexToAscii(s)\r
			local hash = core.crc8legic(asc)\r
			return hash\r
		end\r
		return nil\r
	end,\r
	\r
	------------ CRC-16 ccitt checksums\r
	-- Takes a hex string and calculates a crc16\r
	Crc16 = function(s)\r
		if s == nil then return nil end\r
		if #s == 0 then return nil end\r
		if  type(s) == 'string' then\r
			local utils = require('utils')\r
			local asc = utils.ConvertHexToAscii(s)\r
			local hash = core.crc16(asc)\r
			return hash\r
		end\r
		return nil\r
	end,\r
	\r
	\r
	------------ CRC-64 ecma checksums\r
	-- Takes a hex string and calculates a crc64 ecma\r
	Crc64 = function(s)\r
		if s == nil then return nil end\r
		if #s == 0 then return nil end\r
		if  type(s) == 'string' then\r
			local utils = require('utils')\r
			local asc = utils.ConvertHexToAscii(s)\r
			local hash = core.crc64(asc)\r
			return hash\r
		end\r
		return nil\r
	end,\r
\r
	------------ SHA1 hash\r
	-- Takes a string and calculates a SHA1 hash\r
	Sha1 = function(s)\r
		if s == nil then return nil end\r
		if #s == 0 then return nil end\r
		if  type(s) == 'string' then\r
			local utils = require('utils')\r
			--local asc = utils.ConvertHexToAscii(s)\r
			local hash = core.sha1(s)\r
			return hash\r
		end\r
		return nil\r
	end,	\r
	-- Takes a hex string and calculates a SHA1 hash\r
	Sha1Hex = function(s)\r
		if s == nil then return nil end\r
		if #s == 0 then return nil end\r
		if  type(s) == 'string' then\r
			local utils = require('utils')\r
			local asc = utils.ConvertHexToAscii(s)\r
			local hash = core.sha1(asc)\r
			return hash\r
		end\r
		return nil\r
	end,	\r
\r
	\r
	-- input parameter is a string\r
	-- Swaps the endianess and returns a number,  \r
	-- IE:  'cd7a' -> '7acd'  -> 0x7acd\r
	SwapEndianness = function(s, len)\r
		if s == nil then return nil end\r
		if #s == 0 then return '' end\r
		if  type(s) ~= 'string' then return nil end\r
		\r
		local retval = 0\r
		if len == 16 then\r
			local t = s:sub(3,4)..s:sub(1,2)\r
			retval = tonumber(t,16)\r
		elseif len == 24 then\r
			local t = s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
			retval = tonumber(t,16)\r
		elseif len == 32 then\r
			local t = s:sub(7,8)..s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
			retval = tonumber(t,16)\r
		end\r
		return retval\r
	end,\r
	\r
	-- input parameter is a string\r
	-- Swaps the endianess and returns a string,  \r
	-- IE:  'cd7a' -> '7acd'  -> 0x7acd\r
	SwapEndiannessStr = function(s, len)\r
		if s == nil then return nil end\r
		if #s == 0 then return '' end\r
		if  type(s) ~= 'string' then return nil end\r
		\r
		local retval\r
		if len == 16 then\r
			retval = s:sub(3,4)..s:sub(1,2)\r
		elseif len == 24 then\r
			retval = s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
		elseif len == 32 then\r
			retval = s:sub(7,8)..s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
		end\r
		return retval\r
	end,	\r
	------------ CONVERSIONS\r
	\r
	--\r
	-- Converts DECIMAL to HEX\r
    ConvertDecToHex = function(IN)\r
		local B,K,OUT,I,D=16,"0123456789ABCDEF","",0\r
		while IN>0 do\r
			I=I+1\r
			IN , D = math.floor(IN/B), math.modf(IN,B)+1\r
			OUT = string.sub(K,D,D)..OUT\r
		end\r
		return OUT\r
	end,\r
	---\r
	-- Convert Byte array to string of hex\r
	ConvertBytesToHex = function(bytes)\r
		if bytes == nil then return '' end\r
		if #bytes == 0 then return '' end\r
		local s={}\r
		for i = 1, #bytes do\r
			s[i] = string.format("%02X",bytes[i]) \r
		end\r
		return table.concat(s)\r
	end,	\r
	-- Convert byte array to string with ascii\r
    ConvertBytesToAscii = function(bytes)\r
		if bytes == nil then return '' end\r
		if #bytes == 0 then return '' end\r
		local s={}\r
		for i = 1, #(bytes) do\r
			s[i] = string.char(bytes[i]) \r
		end\r
		return table.concat(s)		\r
	end,	 \r
	ConvertHexToBytes = function(s)\r
		local t={}\r
		if s == nil then return t end\r
		if #s == 0 then return t end\r
		for k in s:gmatch"(%x%x)" do\r
			table.insert(t,tonumber(k,16))\r
		end\r
		return t\r
	end,\r
	ConvertAsciiToBytes = function(s, reverse)\r
		local t = {}\r
		if s == nil then return t end\r
		if #s == 0 then return t end\r
		\r
		for k in s:gmatch"(.)" do\r
			table.insert(t, string.byte(k))\r
		end\r
		\r
		if not reverse then\r
			return t\r
		end\r
	\r
		local rev = {}\r
		if reverse then\r
			for i = #t, 1,-1 do\r
				table.insert(rev, t[i] )\r
			end\r
		end\r
		return rev\r
	end,\r
	\r
	ConvertHexToAscii = function(s)\r
		if s == nil then return '' end\r
		if #s == 0 then return '' end\r
		local t={}\r
		for k in s:gmatch"(%x%x)" do\r
			table.insert(t, string.char(tonumber(k,16)))\r
		end\r
		return table.concat(t)	\r
	end,\r
	\r
	ConvertAsciiToHex = function(s)		\r
		if s == nil then return '' end\r
		if #s == 0 then return '' end\r
		local t={}\r
		for k in s:gmatch"(.)" do\r
			table.insert(t, string.format("%02X", string.byte(k)))\r
		end\r
		return table.concat(t)\r
	end,\r
	\r
	Chars2num = function(s)\r
        return (s:byte(1)*16777216)+(s:byte(2)*65536)+(s:byte(3)*256)+(s:byte(4))\r
	end,\r
	\r
	-- use length of string to determine 8,16,32,64 bits\r
	bytes_to_int = function(str,endian,signed) \r
		local t={str:byte(1,-1)}\r
		if endian=="big" then --reverse bytes\r
			local tt={}\r
			for k=1,#t do\r
				tt[#t-k+1]=t[k]\r
			end\r
			t=tt\r
		end\r
		local n=0\r
		for k=1,#t do\r
			n=n+t[k]*2^((k-1)*8)\r
		end\r
		if signed then\r
			n = (n > 2^(#t*8-1) -1) and (n - 2^(#t*8)) or n -- if last bit set, negative.\r
		end\r
		return n\r
	end,\r
	\r
	-- a simple implementation of a sleep command. Thanks to Mosci\r
	-- takes number of seconds to sleep\r
	Sleep = function(n)\r
		local clock = os.clock\r
		local t0 = clock()\r
		while clock() - t0 <= n do end\r
		return nil	\r
	end,\r
	\r
	-- function convertStringToBytes(str)\r
	-- local bytes = {}\r
	-- local strLength = string.len(str)\r
	-- for i=1,strLength do\r
		-- table.insert(bytes, string.byte(str, i))\r
	-- end\r
\r
	-- return bytes\r
-- end\r
\r
-- function convertBytesToString(bytes)\r
	-- local bytesLength = table.getn(bytes)\r
	-- local str = ""\r
	-- for i=1,bytesLength do\r
		-- str = str .. string.char(bytes[i])\r
	-- end\r
\r
	-- return str\r
-- end\r
\r
-- function convertHexStringToBytes(str)\r
	-- local bytes = {}\r
	-- local strLength = string.len(str)\r
	-- for k=2,strLength,2 do\r
		-- local hexString = "0x" .. string.sub(str, (k - 1), k)\r
		-- table.insert(bytes, hex.to_dec(hexString))\r
	-- end\r
\r
	-- return bytes\r
-- end\r
\r
-- function convertBytesToHexString(bytes)\r
	-- local str = ""\r
	-- local bytesLength = table.getn(bytes)\r
	-- for i=1,bytesLength do\r
		-- local hexString = string.sub(hex.to_hex(bytes[i]), 3)\r
		-- if string.len(hexString) == 1 then\r
			-- hexString = "0" .. hexString\r
		-- end\r
		-- str = str .. hexString\r
	-- end\r
\r
	-- return str\r
-- end\r
\r
}\r
return Utils
Commit	Line	Data
5b1311fb MHS	1	--[[\r
	2	This may be moved to a separate library at some point (Holiman)\r
	3	--]]\r
	4	local Utils = \r
	5	{\r
	6	-- Asks the user for Yes or No\r
	7	confirm = function(message, ...)\r
	8	local answer\r
	9	message = message .. " [y/n] ?"\r
	10	repeat\r
	11	io.write(message)\r
	12	io.flush()\r
	13	answer=io.read()\r
	14	if answer == 'Y' or answer == "y" then\r
	15	return true\r
	16	elseif answer == 'N' or answer == 'n' then \r
	17	return false\r
	18	end\r
	19	until false\r
	20	end,\r
	21	---\r
	22	-- Asks the user for input\r
	23	input = function (message , default)\r
	24	local answer\r
	25	if default ~= nil then\r
	26	message = message .. " (default: ".. default.. " )"\r
	27	end\r
	28	message = message .." \n > "\r
	29	io.write(message)\r
	30	io.flush()\r
	31	answer=io.read()\r
	32	if answer == '' then answer = default end\r
	33	\r
	34	return answer\r
	35	end,\r
f91f0ebb	36	\r
	37	------------ FILE READING\r
	38	ReadDumpFile = function (filename)\r
	39	\r
553e868f	40	filename = filename or 'dumpdata.bin'\r
f91f0ebb	41	if #filename == 0 then\r
	42	return nil, 'Filename length is zero'\r
	43	end\r
	44	\r
	45	infile = io.open(filename, "rb")\r
	46	if infile == nil then \r
	47	return nil, string.format("Could not read file %s",filename)\r
	48	end\r
	49	local t = infile:read("*all")\r
	50	len = string.len(t)\r
	51	local _,hex = bin.unpack(("H%d"):format(len),t)\r
	52	io.close(infile)\r
	53	return hex\r
	54	end,\r
	55	\r
	56	------------ string split function\r
	57	Split = function( inSplitPattern, outResults )\r
	58	if not outResults then\r
	59	outResults = {}\r
	60	end\r
	61	local start = 1\r
	62	local splitStart, splitEnd = string.find( self, inSplitPattern, start )\r
	63	while splitStart do\r
	64	table.insert( outResults, string.sub( self, start, splitStart-1 ) )\r
	65	start = splitEnd + 1\r
	66	splitStart, splitEnd = string.find( self, inSplitPattern, start )\r
	67	end\r
	68	table.insert( outResults, string.sub( self, start ) )\r
	69	return outResults\r
	70	end,\r
	71	\r
5de79e20	72	----ISO14443-B CRC\r
	73	Crc14b = function(s)\r
	74	if s == nil then return nil end\r
	75	if #s == 0 then return nil end\r
	76	if type(s) == 'string' then\r
	77	local utils = require('utils')\r
f6af1cf0	78	return utils.ConvertAsciiToHex(\r
	79	core.iso14443b_crc(s)\r
	80	)\r
5de79e20	81	end\r
	82	return nil \r
	83	end,\r
f91f0ebb	84	\r
b9411eba	85	------------ CRC-8 Legic checksums\r
b9411eba	86	-- Takes a hex string and calculates a crc8\r
a75d63f1	87	Crc8Legic = function(s)\r
	88	if s == nil then return nil end\r
	89	if #s == 0 then return nil end\r
	90	if type(s) == 'string' then\r
	91	local utils = require('utils')\r
	92	local asc = utils.ConvertHexToAscii(s)\r
	93	local hash = core.crc8legic(asc)\r
	94	return hash\r
	95	end\r
	96	return nil\r
	97	end,\r
	98	\r
04a6113f	99	------------ CRC-16 ccitt checksums\r
f91f0ebb	100	-- Takes a hex string and calculates a crc16\r
	101	Crc16 = function(s)\r
	102	if s == nil then return nil end\r
	103	if #s == 0 then return nil end\r
	104	if type(s) == 'string' then\r
	105	local utils = require('utils')\r
	106	local asc = utils.ConvertHexToAscii(s)\r
	107	local hash = core.crc16(asc)\r
	108	return hash\r
	109	end\r
	110	return nil\r
	111	end,\r
04a6113f	112	\r
a75d63f1	113	\r
04a6113f	114	------------ CRC-64 ecma checksums\r
	115	-- Takes a hex string and calculates a crc64 ecma\r
	116	Crc64 = function(s)\r
	117	if s == nil then return nil end\r
	118	if #s == 0 then return nil end\r
	119	if type(s) == 'string' then\r
	120	local utils = require('utils')\r
	121	local asc = utils.ConvertHexToAscii(s)\r
	122	local hash = core.crc64(asc)\r
	123	return hash\r
	124	end\r
	125	return nil\r
	126	end,\r
ea75b30c	127	\r
ea75b30c	128	------------ SHA1 hash\r
b18948fd	129	-- Takes a string and calculates a SHA1 hash\r
ea75b30c	130	Sha1 = function(s)\r
	131	if s == nil then return nil end\r
	132	if #s == 0 then return nil end\r
	133	if type(s) == 'string' then\r
	134	local utils = require('utils')\r
	135	--local asc = utils.ConvertHexToAscii(s)\r
	136	local hash = core.sha1(s)\r
	137	return hash\r
	138	end\r
	139	return nil\r
	140	end, \r
b18948fd	141	-- Takes a hex string and calculates a SHA1 hash\r
	142	Sha1Hex = function(s)\r
	143	if s == nil then return nil end\r
	144	if #s == 0 then return nil end\r
	145	if type(s) == 'string' then\r
	146	local utils = require('utils')\r
	147	local asc = utils.ConvertHexToAscii(s)\r
	148	local hash = core.sha1(asc)\r
	149	return hash\r
	150	end\r
	151	return nil\r
	152	end, \r
	153	\r
04a6113f	154	\r
f91f0ebb	155	-- input parameter is a string\r
	156	-- Swaps the endianess and returns a number, \r
	157	-- IE: 'cd7a' -> '7acd' -> 0x7acd\r
	158	SwapEndianness = function(s, len)\r
	159	if s == nil then return nil end\r
	160	if #s == 0 then return '' end\r
	161	if type(s) ~= 'string' then return nil end\r
	162	\r
	163	local retval = 0\r
	164	if len == 16 then\r
	165	local t = s:sub(3,4)..s:sub(1,2)\r
	166	retval = tonumber(t,16)\r
	167	elseif len == 24 then\r
	168	local t = s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
	169	retval = tonumber(t,16)\r
	170	elseif len == 32 then\r
	171	local t = s:sub(7,8)..s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
	172	retval = tonumber(t,16)\r
	173	end\r
	174	return retval\r
	175	end,\r
	176	\r
5149e37e	177	-- input parameter is a string\r
	178	-- Swaps the endianess and returns a string, \r
	179	-- IE: 'cd7a' -> '7acd' -> 0x7acd\r
	180	SwapEndiannessStr = function(s, len)\r
	181	if s == nil then return nil end\r
	182	if #s == 0 then return '' end\r
	183	if type(s) ~= 'string' then return nil end\r
	184	\r
	185	local retval\r
	186	if len == 16 then\r
	187	retval = s:sub(3,4)..s:sub(1,2)\r
	188	elseif len == 24 then\r
	189	retval = s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
	190	elseif len == 32 then\r
	191	retval = s:sub(7,8)..s:sub(5,6)..s:sub(3,4)..s:sub(1,2)\r
	192	end\r
	193	return retval\r
	194	end, \r
f91f0ebb	195	------------ CONVERSIONS\r
f91f0ebb	196	\r
5b1311fb MHS	197	--\r
5b1311fb MHS	198	-- Converts DECIMAL to HEX\r
f91f0ebb	199	ConvertDecToHex = function(IN)\r
5b1311fb MHS	200	local B,K,OUT,I,D=16,"0123456789ABCDEF","",0\r
	201	while IN>0 do\r
	202	I=I+1\r
5149e37e	203	IN , D = math.floor(IN/B), math.modf(IN,B)+1\r
3ac59c7f	204	OUT = string.sub(K,D,D)..OUT\r
5b1311fb MHS	205	end\r
	206	return OUT\r
	207	end,\r
	208	---\r
	209	-- Convert Byte array to string of hex\r
f91f0ebb	210	ConvertBytesToHex = function(bytes)\r
5de79e20	211	if bytes == nil then return '' end\r
5de79e20	212	if #bytes == 0 then return '' end\r
cd5767d4	213	local s={}\r
5de79e20	214	for i = 1, #bytes do\r
9b989c45	215	s[i] = string.format("%02X",bytes[i]) \r
5b1311fb MHS	216	end\r
	217	return table.concat(s)\r
	218	end, \r
cd5767d4	219	-- Convert byte array to string with ascii\r
f91f0ebb	220	ConvertBytesToAscii = function(bytes)\r
5de79e20	221	if bytes == nil then return '' end\r
5de79e20	222	if #bytes == 0 then return '' end\r
cd5767d4	223	local s={}\r
	224	for i = 1, #(bytes) do\r
	225	s[i] = string.char(bytes[i]) \r
	226	end\r
	227	return table.concat(s) \r
	228	end, \r
f91f0ebb	229	ConvertHexToBytes = function(s)\r
9b989c45	230	local t={}\r
cd5767d4	231	if s == nil then return t end\r
cd5767d4	232	if #s == 0 then return t end\r
9b989c45	233	for k in s:gmatch"(%x%x)" do\r
	234	table.insert(t,tonumber(k,16))\r
	235	end\r
	236	return t\r
	237	end,\r
04a6113f	238	ConvertAsciiToBytes = function(s, reverse)\r
04a6113f	239	local t = {}\r
cd5767d4	240	if s == nil then return t end\r
	241	if #s == 0 then return t end\r
	242	\r
	243	for k in s:gmatch"(.)" do\r
	244	table.insert(t, string.byte(k))\r
	245	end\r
04a6113f	246	\r
	247	if not reverse then\r
	248	return t\r
	249	end\r
	250	\r
	251	local rev = {}\r
	252	if reverse then\r
	253	for i = #t, 1,-1 do\r
	254	table.insert(rev, t[i] )\r
	255	end\r
	256	end\r
	257	return rev\r
cd5767d4	258	end,\r
04a6113f	259	\r
47cbb2d4	260	ConvertHexToAscii = function(s)\r
5de79e20	261	if s == nil then return '' end\r
5de79e20	262	if #s == 0 then return '' end\r
47cbb2d4	263	local t={}\r
47cbb2d4	264	for k in s:gmatch"(%x%x)" do\r
	265	table.insert(t, string.char(tonumber(k,16)))\r
	266	end\r
5de79e20	267	return table.concat(t) \r
	268	end,\r
	269	\r
	270	ConvertAsciiToHex = function(s) \r
	271	if s == nil then return '' end\r
	272	if #s == 0 then return '' end\r
	273	local t={}\r
	274	for k in s:gmatch"(.)" do\r
	275	table.insert(t, string.format("%02X", string.byte(k)))\r
	276	end\r
	277	return table.concat(t)\r
47cbb2d4	278	end,\r
9b989c45	279	\r
3ac59c7f	280	Chars2num = function(s)\r
	281	return (s:byte(1)16777216)+(s:byte(2)65536)+(s:byte(3)*256)+(s:byte(4))\r
	282	end,\r
	283	\r
	284	-- use length of string to determine 8,16,32,64 bits\r
	285	bytes_to_int = function(str,endian,signed) \r
	286	local t={str:byte(1,-1)}\r
	287	if endian=="big" then --reverse bytes\r
	288	local tt={}\r
	289	for k=1,#t do\r
	290	tt[#t-k+1]=t[k]\r
	291	end\r
	292	t=tt\r
	293	end\r
	294	local n=0\r
	295	for k=1,#t do\r
	296	n=n+t[k]2^((k-1)8)\r
	297	end\r
	298	if signed then\r
	299	n = (n > 2^(#t8-1) -1) and (n - 2^(#t8)) or n -- if last bit set, negative.\r
	300	end\r
	301	return n\r
	302	end,\r
	303	\r
b9411eba	304	-- a simple implementation of a sleep command. Thanks to Mosci\r
	305	-- takes number of seconds to sleep\r
	306	Sleep = function(n)\r
	307	local clock = os.clock\r
	308	local t0 = clock()\r
	309	while clock() - t0 <= n do end\r
	310	return nil \r
	311	end,\r
	312	\r
9b989c45	313	-- function convertStringToBytes(str)\r
	314	-- local bytes = {}\r
	315	-- local strLength = string.len(str)\r
	316	-- for i=1,strLength do\r
	317	-- table.insert(bytes, string.byte(str, i))\r
	318	-- end\r
	319	\r
	320	-- return bytes\r
	321	-- end\r
	322	\r
	323	-- function convertBytesToString(bytes)\r
	324	-- local bytesLength = table.getn(bytes)\r
	325	-- local str = ""\r
	326	-- for i=1,bytesLength do\r
	327	-- str = str .. string.char(bytes[i])\r
	328	-- end\r
	329	\r
	330	-- return str\r
	331	-- end\r
	332	\r
	333	-- function convertHexStringToBytes(str)\r
	334	-- local bytes = {}\r
	335	-- local strLength = string.len(str)\r
	336	-- for k=2,strLength,2 do\r
	337	-- local hexString = "0x" .. string.sub(str, (k - 1), k)\r
	338	-- table.insert(bytes, hex.to_dec(hexString))\r
	339	-- end\r
	340	\r
	341	-- return bytes\r
	342	-- end\r
	343	\r
	344	-- function convertBytesToHexString(bytes)\r
	345	-- local str = ""\r
	346	-- local bytesLength = table.getn(bytes)\r
	347	-- for i=1,bytesLength do\r
	348	-- local hexString = string.sub(hex.to_hex(bytes[i]), 3)\r
	349	-- if string.len(hexString) == 1 then\r
	350	-- hexString = "0" .. hexString\r
	351	-- end\r
	352	-- str = str .. hexString\r
	353	-- end\r
	354	\r
	355	-- return str\r
	356	-- end\r
	357	\r
5b1311fb MHS	358	}\r
5b1311fb MHS	359	return Utils