DESFire EV1 ChangeKeySettings INTEGRITY_ERROR

[andrey3]

Hello!

Could you please help me to find mistake in my code which is trying to do ChangeKeySettings

1. --- AUTHENTICATE ---
--> 90-0A-00-00-01-00-00
<-- 42-DC-C7-DE-5E-3B-5F-19-91-AF
Using Key 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00

1) Decrypt rndB 42-DC-C7-DE-5E-3B-5F-19 = D0-F8-2F-36-70-36-6D-82
2) Rotate rndB left F8-2F-36-70-36-6D-82-D0
Generate RndA = 27-C3-05-B4-16-2E-8B-A8
RndA+RnbB = 27-C3-05-B4-16-2E-8B-A8-F8-2F-36-70-36-6D-82-D0
Encrypt RndA+RndB = 1E-7C-4B-BA-A6-87-65-6B-96-18-B8-2E-3C-42-05-84
--> 90-AF-00-00-10-1E-7C-4B-BA-A6-87-65-6B-96-18-B8-2E-3C-42-05-84-00
<-- 74-F4-F2-43-90-81-FE-AD-91-00
Decrypt 2nd frame 1E-7C-4B-BA-A6-87-65-6B-96-18-B8-2E-3C-42-05-84 = C3-05-B4-16-2E-8B-A8-27
Session key = 27-C3-05-B4-F8-2F-36-70-27-C3-05-B4-F8-2F-36-70

--- CHANGE Key Settings ---
Settings to set = 0F
CRC16 of data 0F = 09-A9
settings+CRC16+Padding= 0F-09-A9-00-00-00-00-00
Using session key 27-C3-05-B4-F8-2F-36-70 IV = 00-00-00-00-00-00-00-00
Encrypting 0F-09-A9-00-00-00-00-00 = 15-21-E8-64-57-64-BD-5F
--> 90-54-00-00-08-15-21-E8-64-57-64-BD-5F-00
<-- 91-1E

[nxf54945]

Hello Andrey,

I hope you are doing well.

The information you are requesting is under NDA (Non-Disclosure Agreement). This means that all the information, tools and support should be provided using secured communication channels and only to customers with active NDA.

I will contact you privately and try to guide you to the solution. However, any explicit information or troubleshooting must be treated directly with your salesperson.

Best regards,

Javier