Forum › MIFARE general topics and applications › Authentication between Desfire EV1 and SAM AV2 › Reply To: Authentication between Desfire EV1 and SAM AV2
Hi Nazir,
The byte sequence "80 0A ..." start the authentication in non-X-mode. It is explained in detail in the datasheet "P5DF081 – MIFARE Secure Access Module SAM AV2" on page 160 SAM_AuthenticatePICC. The authenticate run over three stages where you transfer the DESFire response to the SAM and transfer the SAM response to the DESFire via your reader. With the third parameter you define the authentication mode, whether or not you want to use key diversification etc.
The TapLinx team
The byte sequence "80 0A ..." start the authentication in non-X-mode. It is explained in detail in the datasheet "P5DF081 – MIFARE Secure Access Module SAM AV2" on page 160 SAM_AuthenticatePICC. The authenticate run over three stages where you transfer the DESFire response to the SAM and transfer the SAM response to the DESFire via your reader. With the third parameter you define the authentication mode, whether or not you want to use key diversification etc.
The TapLinx team
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