Decrypt NDEF Message with NTAG 424

[jeanmariebridou]

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,

[Jonathan_Iglesias]

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 !

[jeanmariebridou]

I did it ! Thanks for your help Jonathan !

Have a great day!