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Dmanufacturer

Contributor

Registered: 2017-08-15

Posts: 42

[Solved]Encrypting block 7 iclass_decryptionkey.bin

Hi Everyone,

I've been trying to tackle the 'hf iclass encryptblk <data>' command and haven't had any luck.. no matter what I try, I hit a wall.

It's my understanding it requires the TDES key and not the master authentication key which can be found either from a dumped RevA firmware.

Not sure if this key then needs permutation or how to even convert that to the .bin file it requests. I've been using xxd commands.

I would appreciate if you could put me in the right direction.

EDIT: here is how you create iclass_decryptionkey.bin

echo "key_here" > key_dump
xxd -r -p key_dump > iclass_decryptionkey.bin

Last edited by Dmanufacturer (2017-09-05 06:31:36)

iceman

Administrator

Registered: 2013-04-25

Posts: 9,538

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Re: [Solved]Encrypting block 7 iclass_decryptionkey.bin

yes,  that would be the HID transport 3des key needed.