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NT4H1321

更新时间： 2022-02-26 12:19:24

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
16页	233K
描述
NTAG 413 DNA Secure Unique NFC Message for direct access to web services

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NT4H1321 数据手册

NXP Semiconductors

NT4H1321

NTAG 413 DNA Secure Unique NFC Message for direct access to web services

8 Functional description

8.1 File system

The file system is according to NFC Forum-TS-Type-4-Tag_2.0 NFC [5]. The application

structure, see Figure 3 of NTAG 413 DNA is fixed and optimized to fulfil the requirements

of the generic and secure NFC applications. In the single application, there is a set of

keys and different access link to those keys can be provided by file settings. Note in the

file setting "CC" stands for change configuration whearas the 32-byte file is called CC

(Capability Container) file

NDEF Application

ISO/IEC 7816 AID (DF Name) = 0xD2760000850101

CC File (0xE103)

NDEF File (0xE104)

AES 128

32-byte

Content: CC data

128-byte

Empty NDEF message

3 Keys

# 0, # 1, # 2

#E - Free

#F - Never

Change key

Com.

Plain

R&W CC

Com.

Plain

R&W CC CMAC Ctr

aaa-026094

Figure 3.ꢀNDEF Application with default setting

8.1.1 Keys

There are three AES 128-bit keys (key number 0, 1, 2) together with key number

"E" (means free) and key number "F" (means never). By default these 3-keys can be

changed after authentication with key number 0.

8.1.2 CC file

The capability container (CC) file is initialized with the following data field:

"000F20010000FF0406E104008000000000000000000000000000000000000000"

present in "INITIALIZED" state. Date structure of the CC file is explained in [5]. It can

be updated by authenticating with key number 0. The default access right is set as in

Figure 3, write (w), Read &Write (R&W) and change key can be set to any other value or

"F" to make this file read only. To be NDEF complaint the read (R) access shall remain

free (E). One-byte CC file ID is 0x01, is to be used as file number/ ID for the commands

with class byte 0x90, if required.

8.1.3 NDEF file

The NDEF file has an empty NDEF message at delivery. Any NDEF message according

to [5] can be written freely in this file. The write access can be changed to any key or to

never by authentication with the key number 0. For the NDEF file, the CMAC key and Ctr

NT4H1321_SDS

All information provided in this document is subject to legal disclaimers.

Product short data sheet

COMPANY PUBLIC

Rev. 3.2 — 12 October 2017

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