Editing DeviceID
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[[Category:Software]]<noinclude>[[Category:Main]]</noinclude> | |||
Why did SCE not simply use | == 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. | |||
Why did SCE not simply use openPSID? | |||
On PSP, OpenPSID was almost never used except for savedata. | On PSP, OpenPSID was almost never used except for savedata. | ||
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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 | On PSVita, OpenPSID is used the same way as on PS3 but SCE secured still more its console by using the hash of OpenPSID and not OpenPSID itself. | ||
This way, it is harder for people to know their openPSID. But since we have tm0: partition read access with exploits, we can simply read 0x10 Bytes at offset 0x850 of tm0:npdrm/act.dat to get openPSID. | This way, it is harder for people to know their openPSID. But since we have tm0: partition read access with exploits, we can simply read 0x10 Bytes at offset 0x850 of tm0:npdrm/act.dat to get openPSID. | ||
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| id.dat || DID=297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C | | id.dat || DID=297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C | ||
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| calendar.db || tbl_app_authentication_info >> column open_psid >> 297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C || The value is stored as | | 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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| DID || 20 bytes (0x14) || 297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C | | DID || 20 bytes (0x14) || 297C4C0FA1F5A6E374FE4FE65535E03DC1643F2C | ||
|} | |} | ||