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MF2DL1000DA4/02 Datasheet(PDF) 52 Page - NXP Semiconductors |
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MF2DL1000DA4/02 Datasheet(HTML) 52 Page - NXP Semiconductors |
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52 / 132 page  NXP Semiconductors MF2DL(H)x0 MIFARE DESFire Light contactless application IC MF2DL_H_x0 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved. Product data sheet Rev. 3.3 — 5 April 2019 COMPANY PUBLIC 430733 52 / 132 11.4 Authentication commands Authentication with the defined key is required to access the protected file according to access rights. Based on successful authentication session keys are generated, which are used for secure messaging between the terminal and MF2DL(H)x0. Remark:Default FWI settings for AES-based protocol for authentication and secure messaging without LRP are set according to GSMA specification v2.0 to the value 7h. This value is stored in the User ATS and is configurable. With the default setting of FWI value 7h and use of Leakage Resilient Primitive, LRP commands with the need of interrupt handling could abort. To avoid an abort of commands with the need of interrupt handling, the recommendation is to change the FWI value from 7h to 8h. The change can be applied by changing the configurable ATS within the Configuration Settings. 11.4.1 AuthenticateEV2First This command initiates an authentication based on standard AES. After this authentication, AES secure messaging is applied. This authentication command is used to authenticate for the first time in a transaction and can always be used within a transaction. AuthenticateEV2First starts a transaction with a Transaction Identifier (TI) and AuthenticateEV2NonFirst continues the transaction with that TI. This 3-pass challenge-response-based mutual authentication command is completed in two parts: PICC to PCD PCD to PICC aaa-032196 CLA 90 Response data E(Kx, RndB) CMD 71 P1 00 P2 00 Lc XX 1 1st Part 1 1 1 1 1 1 [1...6] Le 00 1 KeyNo LenCap PCDcap2 16 SW1 status 1 SW2 1 SW1 status 1 SW2 1 PICC to PCD PCD to PICC CLA 90 Response data E(Kx, TI || RndA' || PDcap2 || PCDcap2) CMD AF P1 00 P2 00 Lc 20 1 2nd Part 1 1 1 1 Le 00 1 32 32 Data E(Kx, RndA || RndB') Figure 13. AuthenticateEV2First command protocol Table 22. Command parameters description - AuthenticateEV2First - Part1 Name Length Value Description Command Header Parameters CMD 1 71h Command code. 1 Targeted authentication key Bit 7-6 00b RFU KeyNo Bit 5-0 0h to 4h Key number LenCap 1 00h to 06h Length of the PCD Capabilities. [This value should be set to 00h]. [1] - Capability vector of the PCD. Bit 7-2 Full range RFU, can hold any value PCDcap2.1 Bit 1 0b EV2 secure messaging |
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