DESFire Status Decoder
Look up DESFire response status bytes (OPERATION_OK, AUTHENTICATION_ERROR, ADDITIONAL_FRAME, etc.). Reference table from public NXP application notes — no exploit content, no proprietary keys.
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About this list
Status bytes appear at the end of every DESFire response. 00 is success; AF means there is more to come (chained response); AE means the operation isn’t allowed in the current authentication state. The full table is in NXP’s public application notes; we summarise the values you actually meet in the field.