Update cmdhficlass.c

[proxmark3-svn] / client / scripts / e.lua

local getopt = require('getopt')
local utils = require('utils')

example = "script calculates many different checksums (CRC) over the provided hex input"
author = "Iceman"
desc =
[[
This script calculates many checksums (CRC) over the provided hex input. 

Arguments:
        -b                              data in hex
        -w                              bitwidth of the CRC family of algorithm. <optional> defaults to all known CRC presets.
Examples : 
        script run e -b 010203040506070809
        script run e -b 010203040506070809 -w 16
]]

--- 
-- A debug printout-function
function dbg(args)
        if DEBUG then
                print("###", args)
        end
end 
--- 
-- This is only meant to be used when errors occur
function oops(err)
        print("ERROR: ",err)
        return nil,err
end
--- 
-- Usage help
function help()
        print(desc)
        print("Example usage")
        print(example)
end
--- 
-- The main entry point
function main(args)

        local data
        local width = 0

        -- Read the parameters
        for o, a in getopt.getopt(args, 'hb:w:') do
                if o == "h" then return help() end
                if o == "b" then data = a end
                if o == "w" then width = a end
        end

        data = data or '01020304'
        
        print( string.rep('-',60) )
        print('Bit width of CRC | '..width)
        print('Bytes            | '..data)
        print('')
        print( ('%-20s| %-16s| %s'):format('Model','CRC', 'CRC reverse'))
        print( string.rep('-',60) )
        local lists = core.reveng_models(width)
        for _,i in pairs(lists) do
                local a1 = core.reveng_runmodel(i, data, false, '0')
                local a2 = core.reveng_runmodel(i, data, true, '0')
                local a3 = core.reveng_runmodel(i, data, false, 'b')
                local a4 = core.reveng_runmodel(i, data, false, 'B')
                local a5 = core.reveng_runmodel(i, data, false, 'l')
                local a6 = core.reveng_runmodel(i, data, false, 'L')            
                print( ('%-20s| %-16s| %-16s| %-16s| %-16s| %-16s| %-16s'):format(i, a1:upper(), a2:upper(),a3:upper(),a4:upper(),a5:upper(),a6:upper() ) )
        end
end

main(args)