Topic: Change PICC Master Key from DES/2K3DES to AES
Hi all,
I have a problem changing the PICC Master Key from DES/2K3DES to AES.
In one of the Application Notes NXP says, that ich have to send:
Command + Key No + ENCRYPTED( KEY + KEYVERSION + CRC32( Command + Key No + Key + KeyVersion ) + Padding )
That's my log:
CMD
C4
CMD + KEYNO
C4 80
CMD + KEYNO + KEY
C4 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00
CMD + KEYNO + KEY + KEYVERSION
C4 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00
CMD + KEYNO + KEY + KEYVERSION + CRC32
C4 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 8B E9 ED B5
CMD + KEYNO + KEY + KEYVERSION + CRC32 + PADDING
C4 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 8B E9 ED B5 00 00 00
CMD + KEYNO + ENC( KEYNO + KEY + KEY VERSION )
C4 80 7B 82 0E BC 5F 4F F0 DC 7A 34 D4 AF 8F F1
82 9F 6B CD EF 52 71 CB FB 7E
####
The Authentication:
Auth Key = 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
CMD + KEYNO
-> 0A 00
ENC PICC CHALLANGE
<- AF F8 71 39 BD 6A 5F CF 9B
ENC PCD + PICC CHALLANGE
-> AF E6 30 5E 7F EF A9 03 6A DD E7 E4 97 0A 47 89 A3
END PCD CHALLANGE
<- 00 19 D6 1D 32 14 9A 62 0E
Session Key Generated
23 47 C1 55 E2 34 D6 F7 7F 80 70 7A 0B 54 24 CA
####
When I try this, I always get 1E from the card, which meas Integrity Error. Can someone find my mistake?
Kind regards