Restore incorrectly deleted files

fusee/fusee-secondary/src/key_derivation.h

@@ -0,0 +1,37 @@
+#ifndef FUSEE_KEYDERIVATION_H
+#define FUSEE_KEYDERIVATION_H
+
+#include "hwinit/tsec.h"
+
+/* TODO: Update to 0x6 on release of new master key. */
+#define MASTERKEY_REVISION_MAX 0x5
+
+#define MASTERKEY_REVISION_100_230     0x00
+#define MASTERKEY_REVISION_300         0x01
+#define MASTERKEY_REVISION_301_302     0x02
+#define MASTERKEY_REVISION_400_410     0x03
+#define MASTERKEY_REVISION_500_CURRENT 0x04
+
+#define MASTERKEY_NUM_NEW_DEVICE_KEYS (MASTERKEY_REVISION_MAX - MASTERKEY_REVISION_400_410)
+
+typedef enum {
+    BisPartition_Calibration = 0,
+    BisPartition_User = 1,
+    BisPartition_System = 2
+} BisPartition_t;
+
+typedef struct {
+    u8 mac[0x10];
+    u8 ctr[0x10];
+    union {
+        u8 data[0x90];
+        u8 keys[9][0x10];
+    };
+} nx_keyblob_t;
+
+void derive_nx_keydata(u32 target_firmware);
+void finalize_nx_keydata(u32 target_firmware);
+
+void derive_bis_key(void *dst, BisPartition_t partition_id, u32 target_firmware);
+
+#endif