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= IDStorage certified sections =
= IDStorage certified sections =


IDStorage certified sections are a security measure for critical information. For example PSID and OpenPSID are certified (leaves 0x100, 0x101, 0x120, 0x121). For PSPemu on PS3 and PS Vita, the same sort of certificates are contained in PS3 eEID and PS Vita ID Storage, and Kirk commands are implemented to handle them. Moreover, PS3 eEID certificates use almost the same structure and algorithms, whilst PS Vita extends block sizes from 128 to 192 and 256 bits.
IDStorage certified sections are a security measure for critical information. For example PSID and OpenPSID are certified (leaves 0x100, 0x101, 0x120, 0x121).


Kirk command 0x12 is used to verify IDStorage certificates.
KIRK command 0x12 is used to verify IDStorage certificates.


== Structure ==
== Stucture ==
 
Some of the leaves contain certificates similar in PSP, PS3 and PSVita.
 
Size is 0xB8 bytes: 0x10 bytes of data and 0xA8 bytes of certificate.


{|class="wikitable"
{|class="wikitable"
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|}
|}


<source lang="C">
= Content =
typedef struct ECDSA160_signature { // size is 0x28
  unsigned char r[0x14];
  unsigned char s[0x14];
} ECDSA160_signature;


typedef struct ids_cert_main_psp { // size is 0xA8
char data[0x10];
char pub_key[0x28]; // ?generated using Kirk command 0xC? sent to Kirk command 0x11 for verification
ECDSA160_signature signature;
char constant_pub_key[0x28]; // hardcoded constant, same in all PSP consoles but depends on the certificate index in ID Storage
char enc_priv_key[0x20]; // decrypted and verified by Kirk command 0x10
} ids_cert_main_psp;
typedef struct ids_cert_psp { // size is 0xB8
ids_cert_main_psp cert_data; // data input for generating enc_aes_cmac_hash
char aes_cmac[0x10]; // verified by Kirk command 0x12
} ids_cert_psp;
</source>
= Content =
{| class="wikitable"
!Key
!Information
!Unique?
|-
|0x4
|Baryon settings/information + extra data since TA-085v1
|Same per model
|-
|0x5
|Clockgen/I2C setup commands
|Same per model
|-
|0x6
|Battery, CPU frequency and general power settings + extra data since TA-085v1
|Same per model
|-
|0x7
|Unknown (exists since TA-085v1/TA-086, changed in TA-088)
|Yes
|-
|0x8
|Brightness hardware control (exists since TA-085v1/TA-086, changed in TA-085v2 and TA-088)
|Same per model
|-
|0x10
|MagicGate
|Yes
|-
|0x11
|MagicGate
|Yes
|-
|0x12
|MagicGate
|Same per model
|-
|0x13
|MagicGate
|Yes
|-
|0x40
|Contains the 0x5 bytes at 0x88 from key 0x10
|Yes
|-
|0x41
|USB (Driver type identifier) (slightly different since TA-085v1)
|Same per model
|-
|0x43
|USB (Device ID) (slightly different since TA-085v1)
|Same per model
|-
|0x44
|WLAN MAC Address (can be rebuilt using Noobz MAC Address Fixer)
|Yes
|-
|0x45
|WLAN Region (can be rebuilt using KeyCleaner)
|Partially
|-
|0x47
|Default parental lock level (first byte is 0x09, rest is empty)
|Same per model
|-
|0x50
|Serial number (not used since TA-082)
|Yes
|-
|0x51
|Firmware the PSP shipped with, and unknown unique data (exists since TA-085v1/TA-086)
|Yes
|-
|0x52
|Unused by PSP - Mostly the same per PSP except for slight variations, could be manufacturing info (exists since TA-085v1)
|Partially
|-
|0x54
|Default XMB background colour - first 3 bytes: 02 00 02 in PSP-200X IS, 02 00 00 in PSP-200X PB (exists since TA-085v1)
|Partially
|-
|0x100
|DNAS, VSH & Internet browser region, ad-hoc region (if missing, official updaters cannot run - error CTA80000025)
|Yes
|-
|0x101
|OpenPSID (non-indexed duplicate at [location of original + 0x8000])
|Yes
|-
|0x102
|UMD (non-indexed duplicate at [location of original + 0x8000])
|Yes
|-
|0x103
|UMD (non-indexed duplicate at [location of original + 0x8000])
|Yes
|-
|0x104
|UMD (non-indexed duplicate at [location of original + 0x8000])
|Yes
|-
|0x105
|UMD (non-indexed duplicate at [location of original + 0x8000])
|Yes
|-
|0x106
|UMD (non-indexed duplicate at [location of original + 0x8000])
|Yes
|-
|0x120-0x126
|Backup of respective 0x0100-106 key
|Yes
|-
|0x140
|Unknown unique data
|Yes
|}
* Leaves 0x100-0x11F are identical to their backup leaves 0x120-0x13F
* Leaves 0x100-0x11F are identical to their backup leaves 0x120-0x13F
* Old PSP revision haven't leaves 0x046, 0x047
* Old PSP revision haven't leaves 0x046, 0x047
* Very old PSP revisions haven't leaf 0x140
* Very old PSP revisions haven't leaf 0x140
* Leaf 0x50 is maybe Serial Number


= Uses =
= Uses =
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=== sceChkregGetPsCode ===
=== sceChkregGetPsCode ===


Chkreg (chkreg.prx) reads 2 leaves, 0x100 and 0x102 or 0x120 and 0x122.  
Chkreg (chkreg.prx) reads 2 leaves, 0x100 and 0x102 or 0x120 and 0x122. All contain the PsCode at 3 locations. The 1st occurrence of the PsCode is at 0x38, the second at 0xF0 and the third at 0x1A8. Each occurrence is 0xAF (175 bytes) apart.


It gets PSID from the IdStorage and convert it to PsCode.
Example of PsCode:


Example of PSP PsCode: 00 00 00 01 00 03 00 01
0000000048                          00 00 00 01 00 '''03''' 00 01         ........
0000000240  00 00 00 01 00 '''03''' 00 01                          ........       
0000000416                          00 00 00 01 00 '''03''' 00 01          ........


The return from sceChkregGetPsCode is determined to be valid or invalid via KIRK command 0x12, just like other functions using leaves 0x100, 0x120.
The return from sceChkregGetPsCode is determined to be valid or invalid via KIRK command 0x12, just like other functions using leaves 0x100, 0x120.
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== Umdman ==
== Umdman ==


Umdman (umdman.prx) reads 5 leafs, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107. The leaf 0x102 is related to the region, and is probably used to determine what UMD video's can be read on the PSP.
Umdman (umdman.prx) reads 1 leaf, 0x102. This leaf is related to the region, and is probably used to determine what UMD video's can be read on the PSP.


== USB ==
== USB ==
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