Act.dat

Located in flash2:/
Stands for Account Data

Structure

Name	Offset	Size	Example	Notes
Activation Type	0x0	0x2	0000, 0001	1 = local
Unknown	0x0	0x2	0000, 0001	0 for v.1, 1 for v.2. Maybe Version Flag like on RIF.
Version	0x4	0x4	00000001, 00000002	1 (PSP and PS3 parser) or 2 (PSVita parser)
Account ID	0x8	0x8	AB CD EF 01 02 34 78 91	PSN Account ID (in little endian)
Primary Key Table	0x10	0x800	N.A	Encrypted RIF keys table
Unknown 1	0x810	0x40	N.A
OpenPsId	0x850	0x10	N.A
Unknown 2	0x860	0x10	N.A	Encrypted data for v.1 / Unknown (8 bytes) + Padding (8 bytes) for v.2
Unknown 4	0x870	0x10	N.A	Encrypted data for v.1 / Start Time (8 bytes) + Expiration Time (8 bytes) for v.2
Secondary Table	0x880	0x650	N.A
RSA Signature	0xED0	0x100	N.A	RSA Public Key for RIF type 0 and 1
Unknown Signature	0xFD0	0x40	N.A	Maybe AES CMAC (0x20 key + 0x20 hash) or AES HMAC.
ECDSA Signature	0x1010	0x28	N.A	pub=vsh_pub, ctype=0x02(vsh_curves)