Forum › MIFARE general topics and applications › Authentication between Desfire EV1 and SAM AV2 › Reply To: Authentication between Desfire EV1 and SAM AV2
Hi “Mifare Desfire”,
Did you check the authentication without the SAM? Did it work properly? The error indicates a wrong length byte. This can occur if a longer (or shorter) key is expected which means you use the wrong cipher, 2K3DES instead of AES or vice versa.
The AN 1826 – MIFARE SAM AV2 – For MIFARE DESFire EV1 has a lot of examples with various key values and types.
The TapLinx team
Did you check the authentication without the SAM? Did it work properly? The error indicates a wrong length byte. This can occur if a longer (or shorter) key is expected which means you use the wrong cipher, 2K3DES instead of AES or vice versa.
The AN 1826 – MIFARE SAM AV2 – For MIFARE DESFire EV1 has a lot of examples with various key values and types.
The TapLinx team
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