NXP Semiconductors

MF1P(H)x1y1

MIFARE Plus EV1

MF1P(H)x1y1

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Product short data sheet

Rev. 3.2 — 6 December 2018

COMPANY PUBLIC

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8.4 AES Secure Messaging

8.4.1 AES security concept

A MIFARE Plus transaction includes a set of operations from card activation,

authentication to the reading and changing of data on the card. Each interaction with data

on the card requires an authentication with the appropriate sector key. The result of such

an authentication is called a session.

MIFARE Plus EV1 supports two secure messaging modes:

• EV0 secure messaging, which is fully backwards compatible with MIFARE Plus EV0.

• EV1 secure messaging.

The PCD can decide which mode to use.

8.4.2 Multi-sector authentication

This feature is available in security level 3 for data which is spread over multiple sectors

to improve transaction performance.

Providing that such sectors are secured with identical keys (key value and key type) only

a single authentication is required to read and/or write data from these sectors. There is

no need to re-authenticate when accessing any data within these sectors. Therefore it is

possible to configure a card in such a way that operating with only one authentication is

needed in security level 3 to access all sectors.