I've implemented AES Key Diversification AV2 and now I´m wondering what is SAM AV1 and how does it work? Any one can share a link or give some informatione?
Just to share some knowledge an example for AV2:
/*
* Diversification Example:
* AID: 130101
* UID: 042149BA294B80 (Big-endian: 804B29BA492104)
* Key: F3E7E19A69AC5A9B538D4F655CCECA1C
*
* Key0: 8F42B16487E36E43B6B1F3B14FCCD46D
* firstsubKey: 1E8562C90FC6DC876D63E7629F99A85D
* secondsubkey:3D0AC5921F8DB90EDAC7CEC53F3350BA
*
* UID AID KNr Salt SecondsubKey
* divInputXORKey2: 01 042149BA294B80 130101 02 6F4346 80 3D0AC5921F8DB90EDAC7CEC53F3350BA
* encrypt: 6B5FC890EA3EDDB0C1B4B2AF5EA6A89B 958E854C9F67C68D42F21FC7FFD760AB
*
* Key: 958E854C9F67C68D42F21FC7FFD760AB
* */
In general, SAM works in two modes: the X mode and the Non-X mode. The X mode requires a NXP NFC reader. In this case, the SAM send all artifacts to the PICC autonomously.
In the Non-X mode, the embedding micro controller has to handover all artifacts between SAM and the NFC reader.
You can refer the following link as well: Brief description of SAM
This is the official information from NXP MIFARE SAM AV2 by NXP
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With