mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-21 07:46:12 +08:00
77 lines
2.1 KiB
Lua
77 lines
2.1 KiB
Lua
local getopt = require('getopt')
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local utils = require('utils')
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example = "script calculates many different 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 (CRC) over the provided hex input.
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Arguments:
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-b data in hex
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-w bitwidth of the CRC family of 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
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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 = a end
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if o == "w" then width = a end
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end
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data = data or '01020304'
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width = width or 0
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print( string.rep('-',60) )
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print('Bit width of CRC | '..width)
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print('Bytes | '..data)
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print('')
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print( ('%-20s| %-16s| %s'):format('Model','CRC', 'CRC reverse','bigEnd', 'bigEnd','little','little'))
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print( string.rep('-',60) )
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local lists, err = core.reveng_models(width)
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if lists == nil then return oops(err) end
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for _,i in pairs(lists) do
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if string.len(i) > 1 then
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local a1 = core.reveng_runmodel(i, data, false, '0')
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local a2 = core.reveng_runmodel(i, data, true, '0')
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local a3 = core.reveng_runmodel(i, data, false, 'b')
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local a4 = core.reveng_runmodel(i, data, false, 'B')
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local a5 = core.reveng_runmodel(i, data, false, 'l')
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local a6 = core.reveng_runmodel(i, data, false, 'L')
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print( ('%-20s| %-16s| %-16s| %-16s| %-16s| %-16s| %-16s'):format(i, a1:upper(), a2:upper(),a3:upper(),a4:upper(),a5:upper(),a6:upper() ) )
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end
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end
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end
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main(args) |