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== Description == | == Description == | ||
It is a unique 20 bytes (0x14) hexsequence inside your PSVita / PSTV. It is simply the SHA1 hash of [[openPSID]]. It is stored inside several files such as [[id.dat]] or calendar.db in order to check that the inserted memory card was not previously in another PSVita, else a database refresh is performed. | It is a unique 20 bytes (0x14) hexsequence inside your PSVita / PSTV. It is simply the SHA1 hash of [[openPSID]]. It is stored inside several files such as [[id.dat]] or calendar.db in order to check that the inserted memory card was not previously in another PSVita, else a database refresh is performed. | ||
Why did | Why did SONY not simply used openPSID ? | ||
On PSP, OpenPSID was almost never used except for savedata. | On PSP, OpenPSID was almost never used except for savedata. | ||
On PS3, OpenPSID was used for act.dat checks, savedata / trophies when no PSN account bounded. | On PS3, OpenPSID was used for act.dat checks, savedata / trophies when no PSN account bounded. | ||
On PSVita, OpenPSID is used the same way as on PS3 but SONY secured still more its console by using the hash of OpenPSID and not OpenPSID itself. | |||
This way, it's harder for people to know their openPSID. But since we have tm0: partition read access from 3.00 to 3.60, we can just read 0x10 Bytes at offset 0x850 of tm0:npdrm/act.dat to get openPSID. | |||
[[File:http://www.psdevwiki.com/ps3/images/d/db/OpenPSID-to-DID.png|200px|thumb|left|screenshot cannot be displayed]] | |||
=== Location of the files where it is stored === | |||
[[Files_on_the_PS_Vita#ux0|ux0:]][[id.dat]] | [[Files_on_the_PS_Vita#ux0|ux0:]][[id.dat]] | ||
[[Files_on_the_PS_Vita#ux0|ux0:]]calendar/calendar.db | |||
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| calendar.db || tbl_app_authentication_info >> column open_psid >> 297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C || The value of the Hexsequence is stored as a Text value | | calendar.db || tbl_app_authentication_info >> column open_psid >> 297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C || The value of the Hexsequence is stored as a Text value | ||
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| [[File:psid.png|thumb|left]] || | | [[File:psid.png|thumb|left]] || | ||
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=== Structure === | === Structure === | ||
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| DID || 20 bytes (0x14) || 297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C | | DID || 20 bytes (0x14) || 297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C | ||
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|} | |} | ||