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https://github.com/RfidResearchGroup/proxmark3.git
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60e8657796
ADD: lua script test for using the reveng inside lua. *prove of concept*
it implements -h help
-d data in a hexstring
-w width of the crc family. (ie 16 gives all CRC-16 calculations.
it iterates thru all found crc presets in a crc family based on the width of crc. It calcs crc and the reverse crc.
69 lines
No EOL
1.4 KiB
Lua
69 lines
No EOL
1.4 KiB
Lua
local getopt = require('getopt')
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local utils = require('utils')
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example = "script calculates many checksums (CRC) over the provided hex input"
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author = "Iceman"
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desc =
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[[
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This script calculates many checksums (CRS) over the provided hex input.
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Arguments:
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-b data in hex
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-w width of the CRC algorithm. <optional> defaults to all known CRC presets.
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Examples :
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script run e -b 010203040506070809
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script run e -b 010203040506070809 -w 16
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]]
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---
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-- A debug printout-function
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function dbg(args)
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if DEBUG then
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print("###", args)
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end
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end
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---
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-- This is only meant to be used when errors occur
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function oops(err)
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print("ERROR: ",err)
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return nil,err
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end
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---
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-- Usage help
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function help()
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print(desc)
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print("Example usage")
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print(example)
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end
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---
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-- The main entry point
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function main(args)
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local data = '01020304'
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local width = 0
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-- Read the parameters
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for o, a in getopt.getopt(args, 'hb:w:') do
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if o == "h" then return help() end
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if o == "b" then data = utils.ConvertHexToa end
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if o == "w" then width = a end
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end
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print('Width of CRC: '..width..' bytes: '..data)
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print('')
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print('Model','CRC', 'CRC_Reverse')
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local lists = core.reveng_models(width)
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for _,i in pairs(lists) do
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local one = core.reveng_runmodel(i, data, 0,0)
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local two = core.reveng_runmodel(i, data, 1,0)
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print(i, one, two)
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end
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if 1 == 1 then
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return
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end
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end
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main(args) |