Reply To: MIFARE DESFire EV1 Write operation Authentication Error in Std Data File

Forum MIFARE general topics and applications MIFARE DESFire EV1 Write operation Authentication Error in Std Data File Reply To: MIFARE DESFire EV1 Write operation Authentication Error in Std Data File

Re: MIFARE DESFire EV1 Write operation Authentication Error in Std Data File

20. March 2017 at 11:37
Hello Selvaraj,

In the creation command you have to define the communication mode and the access permission for your file. Both are depend to each other. If you set the communication mode to “plain” you cannot set a key for encryption.

The permission flags are values from 0x00 to 0x0F. The values from 0x00 to 0x0D means use a key and the value is the card key number. 0x0E means “free access” (without keys) and 0x0F means “not changeable”. For plain communication you have to set the permissions to 0x0E. If you want to make it impossible to change the settings later, you set the permission to 0x0F.

Regards,
The TapLinx team
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