#define GET_KEY_SETTINGS 0x45
#define CHANGE_KEY 0xc4
#define GET_KEY_VERSION 0x64
-#define AUTHENTICATION_FRAME 0xAF
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+#define AUTHENTICATION_FRAME 0xAF
+
+
+#define MAX_APPLICATION_COUNT 28
+#define MAX_FILE_COUNT 16
+#define MAX_FRAME_SIZE 60
+#define NOT_YET_AUTHENTICATED 255
+#define FRAME_PAYLOAD_SIZE (MAX_FRAME_SIZE - 5)
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