Decoding an extravagant binary format 46 06 09 21 43 65 87 F9

[Papa Tana]

Hi All,

I receive binaries in my application:

IMSI_CODED in hex_dump
0000   46 06 09 21 43 65 87 F9

In reality, the peer is sending me this IMSI : (64 60 90 12 34 56 78 9F).

I hard-decode this IMSI_CODED like below:

	<<R1:8, R2:8, R3:8, R4:8, R5:8, R6:8, R7:8, R8:8>> = <<IMSI_CODED:64>>,	
	
	Elements = [
		string:right(integer_to_list(R1,16), 2, $0),
		string:right(integer_to_list(R2,16), 2, $0),
		string:right(integer_to_list(R3,16), 2, $0),
		string:right(integer_to_list(R4,16), 2, $0),
		string:right(integer_to_list(R5,16), 2, $0),
		string:right(integer_to_list(R6,16), 2, $0),
		string:right(integer_to_list(R7,16), 2, $0),
		string:right(integer_to_list(R8,16), 2, $0)
		],                                          	
	R = [[B,A] || [A,B] <-Elements ],	%% here, I need to revert each element :-/
	L = list_to_tuple(R),
	Z = tuple_to_list(L),
	Real_IMSI = string:join(Z,"")
	
	
=> Real_IMSI = 	"646090123456789F"

I'm using the same hard-coding style to decode some SMS payload in
binary format..

But I can feel that there is a much more elegant way to do it, because
as you can see, despite it's working, it's really dirty etc...

Can anyone advice please?

Thanks,

Best Regards,