topic Decrypt NDEF Message with NTAG 424 in NFC

Decrypt NDEF Message with NTAG 424

jeanmariebridou — Thu, 08 Aug 2019 15:08:16 GMT

Hello,

I'm looking for a way to decrypt NFC tags.

I use NXP tags NTAG 424.

Unfortunately, i can't access to the DocStore...

My URL looks like this:

http://localhost/8091B21A4CDB757134302A839779FFB1000

and I would like to be able to get search leads to find my URL (server side) in the form:

http://localhost/uid=000000000xctr=000000x.

Does anyone have any suggestions for me?

Thank you in advance,

Re: Decrypt NDEF Message with NTAG 424

Jonathan_Iglesias — Thu, 08 Aug 2019 15:56:20 GMT

Dear Jean-Marie Bridoux,

what kind of document you require from docstore ? in the case of NTAG 424 a lot of information is public I would recommend to check the section 4 of the features and hints document here is explained the SDM ( Secure Dynamic Messaging) https://www.nxp.com/docs/en/application-note/AN12196.pdf if you have more questions or issues let us know.

Have a great day !

Re: Decrypt NDEF Message with NTAG 424

jeanmariebridou — Tue, 24 Sep 2019 14:55:40 GMT

I did it ! Thanks for your help Jonathan !

Have a great day!