Secure Dynamic Messaging Backend Server Demo

Cryptographic signature validated.

Encryption mode: LRP
PICC Data Tag: c7
NFC TAG UID: 04940e2a2f7080
Read counter: 1
File data (hex): 4f4f2d2d2d2d2d2d2d2d2d2d2d2d2d2d
File data (UTF-8): OO--------------
Tamper Status: Tampered! (loop open)
(Assuming that "Tamper Status" is stored in the first two bytes of "File data")

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Source code: https://github.com/nfc-developer/sdm-backend

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