NTP53X2 datasheet(78/133 Pages) NXP

78 / 133 page

NXP Semiconductors

NTP53x2

NTAG 5 link - NFC Forum-compliant I2C bridge

NTP53x2

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

Product data sheet

Rev. 3.3 — 3 July 2020

COMPANY PUBLIC

544533

78 / 133

Mutual Authentication (MAM1, MAM2)

The mutual authentication is a two-pass authentication procedure. The first

AUTHENTICATE command (MAM1) is executing the tag authentication and gets

the challenge from NTAG 5 link. The second AUTHENTICATE command (MAM2) is

executing the interrogator authentication.

Table 161 defines the message within the AUTHENTICATE command for mutual

authentication (MAM1).

For more detailed information, refer to ISO/IEC 29167-10.

Table 161. Message format for MAM1

AuthMethode

Step

MAM1_RFU

KeyID

IChallenge_MAM1

# of bits

Description

10b

00b

0000b

[7:0]

random interrogator challenge

Table 162 defines the response of NTAG 5 link to an AUTHENTICATE command for

MAM1.

For more detailed information, refer to ISO/IEC 29167-10.

Table 162. TReseponse for MAM1

TResponse MAM1 (176 bit)

AES-ECB-ENC(Key[KeyID].ENC_key,C_TAM1[15:0] || TChallenge_MAM1[31:0] || IChallenge_TAM1[79:0]) || TChallenge_

MAM1[79:32]

Table 163 defines the message within the AUTHENTICATE command for mutual

authentication (MAM2).

For more detailed information, refer to ISO/IEC 29167-10.

Table 163. Message format for MAM2

AuthMethode

Step

MAM2_RFU

IResponse

# of bits

128

Description

10b

01b

0000b

AES-DEC(, Key[KeyID].ENC_key,C_

MAM2[11:0] || Purpose_MAM2[3:0] ||

IChallenge_MAM1[31:0] || TChallenge_

MAM1[79:0])

Table 164 defines valid values for Purpose_MAM2 for NTAG 5 link.

Table 164. Definition of Purpose_MAM2

Purpose_MAM2

Description

0000b

Mutual Authentication

Standard

all other 0xxxb

RFU

1000b

Disable NFC Privacy Mode until NFC field reset

1001b

Enable NFC Privacy Mode

1010b

Disable NFC Privacy Mode

1011b

Destroy NTAG 5 link

NXP specific

all other 1xxxb

RFU

NTP53X2 датащи(PDF) 78 Page - NXP Semiconductors

NTP53X2 датащи(HTML) 78 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL