Talk:HDD Encryption

Getting keys the easier way

First you need to get the sb_iso_spu_module.self individuals seed that can be found in the metadata header:

D9 2D 65 DB 05 7D 49 E1 A6 6F 22 74 B8 BA C5 08
83 84 4E D7 56 CA 79 51 63 62 EA 8A DA C6 03 26
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
C3 B3 B5 AA CC 74 CD 6A 48 EF AB F4 4D CD F1 6E
37 9F 55 F5 77 7D 09 FB EE DE 07 05 8E 94 BE 08
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

also found in lv1ldr

Using your console specific eid_root_key/iv (e.g. from metldr dump) and libeeid you can then generate the keys directly by calling

u8 indivs[0x100];
u8 chunk1[0x40] = {0xD9, 0x2D, /*...*/, 0x00};
u8 chunk2[0x40] = {0xC3, 0xB3, /*...*/, 0x00};
indiv_gen(chunk1, chunk2, NULL, NULL, indivs);

Now you have your console specific ATA data key in indivs[0x00-0x20] and the ATA tweak key in indivs[0x40-0x60] :)

About "ENCDEC IV and key"

This key/iv pair set by metldr is your eid_root_key, it's not just used for one purpose. (-> https://nwert.wordpress.com/2012/07/11/eeid-cryptography/)

HDD's end

This was found at the end of an HDD backup, 41 sectors from the end, 33 sectors in size, followed by zero bytes (8 sectors) It's very uncanny how this is formed after decryption. Maybe there's a new layer of encryption at the end of the disc?

https://dl.dropboxusercontent.com/u/35197530/hddend.bin

Sector 1 of unknown area (0x200 length)

Chunk	Offset	Length	Example	Description	Notes
1	0x0	0x10	A2A0D0EBE5B9334487C068B6B72699C7		partitions common key ?
	0x10	0x10	DA7BD0E6BE941449B84EDE147F9705BA		partition1 key ?
	0x20	0x8	2200000000000000	partition1 start sector	in big endian: 22
	0x28	0x8	E5513C0000000000	partition1 end sector	in big endian: 3C51E5
	0x30	0x8	0000000000000000	not used
	0x38	0x48	p r i m a r y	partition type	identifyer ?
2	0x80	0x10	A2A0D0EBE5B9334487C068B6B72699C7		partitions common key ?
	0x90	0x10	FB2718C324FC9947907A18267C30F0FE		partition2 key ?
	0xA0	0x8	00583C0000000000	partition2 start sector	in big endian: 3C5800
	0xA8	0x8	FF37B60000000000	partition2 end sector	in big endian: B637FF
	0xB0	0x8	0000000000000000	not used
	0xB8	0x48	p r i m a r y	partition type	identifyer ?
3	0x100	0x80		not used	filled with zeroes
4	0x180	0x80		not used	filled with zeroes

• Notes
  • divided in 4 chunks of 0x80 each
  • values in the column "offsets" in the table are relative to the sector start
  • partition start and end sectors are stored in little endian