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desfire ev1 change key error 911E

desfire ev1 change key error 911E i'm trying to change key in my mifare desfire ev1 card with apdu native wrapped mode command but i always get error 911E. i can successfully authenticate, create application and files, but i can't change keys ! here's what i do: first i select the application: 905A00000300000400 then i authenticate with application master key: =>61900A0000010000 <=00AA55A05A86ED002391AF =>6190AF000010CD72DFC6E6D040A4F011174EEBE03AA600 <=00AD6CC16025CCFB7B9100 RndA: 1122334455667788 RndB: 8828d6e41eea3d31 session key: 112233448828d6e4 the default key is 16 bytes zeroes. old key: 00000000000000000000000000000000 new key: 00000000000000010000000000000001 i want to preferably use single DES and for that i have chosen a symmetric 8 byte key(i dont know much about encryption and DES. i'm using online encryption websites for my work and even for crc calculation). so as the desfire datasheet says, i have to calculate a crc over the new key(since i h...