Generate MAC Mifare Plus EV1

sfranco · ‎09-10-2019

There´s someone who had a lot of knowlegth in Mifare Plus EV1 that can teach me how can I get the MAC? I have been tried generate the MAC but I don´t Know why I always had the response for the card that the MAC is incorrect.

I will really aprreciate if somo of you can leave me your e-mail for doing the questions much more specific.

Also, I wanna know if the reading and writting counters had a specific memory space for them or if this counters are just variables with a initial value that I set and that I need to increase in my code?

I appreciate any help you can give me about this subject.

Thank you very much.

stephanie_m · ‎09-11-2019

Hello,

It is most likely you can be missing some step or maybe you might be creating some of the elements needed on a different way.

Still, please consider that most of the information of the device you are asking it's under NDA and it is not available in the public web page.

As you might know, there are some of the documents and libraries which are under NDA (Non-Disclosure Agreement) and placed in DocStore, maybe some of the information there can help you in the process, still, the 8.5 Transaction MAC process you are asking for in a detailed way it's not available in a public manner.

Sorry for the inconveniences this might cause you.

Regards,

Estephania

sfranco · ‎09-11-2019

Hello Estephania,

I have high access to the mifare plus ev1, I tried to follow step by Step

of the dataSheet but I had not success creating the MAC, I allready

generate the session and mac key, but when I tried to read or write in the

card always I has the 08h error->this means I didnt generate the MAC

correct. There are severas steps in this process and there are not

confirmation that I am doing right in all this steps. Do you have

experience with this cards? Can I show you the logs that I had?

Thank you very much,

El El mié, 11 de sep. de 2019 a las 9:22 p. m., estephania_martinez <

admin@community.nxp.com> escribió:

NXP Community
<https://community.freescale.com/resources/statics/1000/35400-NXP-Community-Email-banner-600x75.jpg>
Re: Generate MAC Mifare Plus EV1
reply from Estephania Martinez
<https://community.nxp.com/people/estephania_martinez?et=watches.email.thread>
in NFC - View the full discussion
<https://community.nxp.com/message/1205026?commentID=1205026&et=watches.email.thread#comment-1205026>

stephanie_m · ‎09-12-2019

Hello,

Yes, you might have access to that documentation, still , not everyone in the public community does. So it it not appropriate to share the logs and information through this channel.

Sorry for the inconveniences this might cause you.

Regards ,
Estephania

sfranco · ‎09-12-2019

I undertand that, sorry if I share sensible information, I thought I didn´t

do it. Can I send you and Email with some doubts about the process for

generate the MAC?

Thank you.

El jue., 12 sept. 2019 a las 10:21, estephania_martinez (<

admin@community.nxp.com>) escribió:

NXP Community
<https://community.freescale.com/resources/statics/1000/35400-NXP-Community-Email-banner-600x75.jpg>
Re: Generate MAC Mifare Plus EV1
reply from Estephania Martinez
<https://community.nxp.com/people/estephania_martinez?et=watches.email.thread>
in NFC - View the full discussion
<https://community.nxp.com/message/1205620?commentID=1205620&et=watches.email.thread#comment-1205620>

stephanie_m · ‎09-12-2019

Hello,

Sorry, I can't provide my email.

We are now aware of your request, we are under a great load of work right now and you will have an answer as soon as possible.

Regards,

Estephania