Differences

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--- scsidrminfo [2009/04/24 16:49] – created megadiscman
+++ scsidrminfo [2009/04/24 17:17] – megadiscman
@@ Line 3: / Line 3: @@
 ===== Commands =====
-Command A3: Write Crypto Stuff (Sony calls it "Send Key")
+==== Command A3: Write Crypto Stuff ====
+(Sony calls it "Send Key")
 <code>
 : BYTE  Command byte A3
-: BYTE  unused, send as Zero (might contain LUN)
+: BYTE  unused (might contain LUN)
 : DWORD Object Number
-: BYTE  unsused, send as Zero
+: BYTE  unused
 : BYTE  Magic Byte BD
 : WORD  Size of cryptographic data
 A: BYTE  key type
-B: BYTE  unused, send as Zero
+B: BYTE  unused
 </code>
-Command A4: Read Crypto Stuff (Sony calls it "Request Key")
+==== Command A4: Read Crypto Stuff ====
+(Sony calls it "Request Key")
 <code>
@@ Line 22: / Line 24: @@
 : BYTE  unused, send as Zero (might contain LUN)
 : DWORD Object Number
-: BYTE  unsused, send as Zero
+: BYTE  unsused
 : BYTE  Magic Byte BD
 : WORD  Size of cryptographic data
 A: BYTE  key type
-B: BYTE  unused, send as Zero
+B: BYTE  unused
 </code>
+===== Data formats =====
+==== Key type 30: Authentication Token 1 ====
+This data packet is sent from the Host to the HiMD device
+<code>
+: WORD  Length, must be 0012
+: WORD  unsused
+: BYTES 8 bytes "Leaf ID of Host"
+C: BYTES 8 bytes "Nonce from Host"
+</code>
+==== Key type 31: Authentication Token 2 ====
+This data packet is sent from the HiMD device to the Host, the expected length is 43C (i.e. header + 64 keys?)
+<code>
+: DWORD unknown, maybe length in first WORD
+: BYTES 16 bytes "Disc ID"
+: BYTES 8 bytes "MAC from Device"
+C: BYTES 8 bytes "Leaf ID of Device"
+: BYTES 8 bytes "Nonce from Device"
+C: BYTES The "local EKB of the Device" Starts with its length in 16 byte units - 1
+</code>
+==== Key type 32: Authentication Token 3 ====
+This data packet is sent from the Host to the HiMD device
+<code>
+: WORD  Length, must be 41A
+: WORD  unused
+: BYTES 8 bytes "MAC from Host"
+C: BYTES The "local EKB of the Host"
+</code>
+==== Key type 33: Authentication Token 4 ====
+This data packet is sent from the HiMD device to the Host (expected length 404)
+<code>
+: DWORD unknown, length?
+: BYTE  unknown, but used
+: BYTE  bit flags. Top 2 Bits are one field, the next two bits are further fields
+                     Low 4 bits unused.
+: WORD  length of following data
+: DWORD unknown, but used
+C: BYTES data, length from field 6.
+</code>