IDStorage
Location[edit | edit source]
PSP[edit | edit source]
IDStorage area is located after the IPL on the full (with spare data) NAND dump at offset 0xC0000, but their data only starts at 0xC6000. You can check it using [1] (only for old non-encrypted indexes yet).
Description[edit | edit source]
It is used to store low-level information, such as the serial, MAC address, UMD, WLAN and region.
The IDStorage area is an associative array and information is stored using key/value pairs (index/leaf). The IDStorage seems a little coupled to the physical storage as each leaf is mapped to an area of 512-byte, which is equal to the pagesize of the PSP standard NAND flash, and it seems 512-byte page operations are intended.
Structure[edit | edit source]
Idstorage leaves are all 512 bytes. Most IDStorage leaves have a pair, although some do not.
Idstorage leaves indexes are 16-bit integers and are stored in an index table of two NAND pages of 512 bytes.
- The index is identified by byte 6 of the spare area (0x73).
- byte 7 is the idstorage version.
- byte 8 is either 1 or 0 depending on whether the idstorage has been formatted or not
- and finally byte 9 indicates if the idstorage is read-only or not.
For example, if index table is found at 0xDEC00 and fourth index record (two bytes/word long) is started at offset 0xDEC06 isn't empty (with their value = 0x0123 leaf number) then leaf data will be found at 0xC6000 + (3 * 528) = 0x0C6630 in the full (with spare data) NAND dump file.
Importance in OS[edit | edit source]
The loss or corruption of some IDStorage leaves of a PSP device can be crippling to the usability of this PSP.
Notably, it can result in homebrew and UMDs no longer running, as major functions such as UMD decryption, Ad Hoc and DNAS Authentication rely on IDStorage leaves. Users are strongly recommended to take a backup either of only the IDStorage or a full NAND Backup, giving them the opportunity to restore their IDStorage using a tool such as NandTool.
The PSP System Software provides a driver to facilitate manipulations: idstorage.prx. In PS Vita, the equivalent is idstorage.skprx and in PS3 it is the Individual Information Manager inside ss_server2.fself
Generation[edit | edit source]
Most of the idstorage generation process is detailed in Despertar Del Cementerio (sources available here: https://github.com/mathieulh/Despertar-Del-Cementerio).
- some PSP JigKick files contain information on how to (re)generate idstorage leaves
- DespertarDelCementerio v7 also contains information about idstorage (re)generation.
- the most significant module used by DCv7 used to do this is idsregeneration.prx
(see DCv7 src code https://github.com/mathieulh/Despertar-Del-Cementerio/tree/master/idsregeneration).
- you can see a plethora of "templates" which are used for the generation of the idstorage sections.
- the idstorage regeneration requires 2, probably more parameters -> Region, MAC Address, and likely a timestamp of sorts.
- on ps3 the generation method wasn't found on the JigKick firmware files (and selfs). however, it seems that factory still does this, but by accessing a server, so the information cannot be deduced anymore unless there's access to the server.
- together with the idps (called PSID on PSP), the openPSID is also generated on PSP (written to IdStorage).
- there are 12 sections on PSP, unlike the 11 ones on PS3 EID0.
IDStorage certified sections[edit | edit source]
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.
Kirk command 0x12 is used to verify IDStorage certificates.
Structure[edit | edit source]
| Name | Size | Description |
|---|---|---|
| Data | 0x10 | contains the actual data (either PSID or OpenPSID) |
| plaintext public key | 0x28 | contains the certificate's public key (without padding) |
| R | 0x14 | part of the ECDSA signature pair (R, S) |
| S | 0x14 | part of the ECDSA signature pair (R, S) |
| public key | 0x28 | ECDSA public key (unknown what this is doing here) |
| encrypted private key | 0x20 | encrypted blob that contains the certificate's private key (with padding) |
| omac/cmac1 | 0x10 | hash of the previous information in CMAC1/OMAC mode |
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;
Content[edit | edit source]
| 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 | System Software version the PSP shipped with, and per-console digest of version.txt using Fuse ID and "specialweek" key. 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 and original shell colour (exists since TA-085v1), see section below for more info | Partially |
| 0x100 | From 0 to 0x37: Unknown. After 0x38: IDPS certificates part 1. DNAS, VSH & Internet browser region, ad-hoc region (if missing, official updaters cannot run - error CTA80000025) | Yes |
| 0x101 | IDPS certificates part 2 (contains the start of the OpenPSID certificate) (non-indexed duplicate at [location of original + 0x8000]) | Yes |
| 0x102 | IDPS certificates part 3 (contains the end of the OpenPSID certificate) followed by UMD certificates part 1 (non-indexed duplicate at [location of original + 0x8000]) | Yes |
| 0x103 | UMD certificates part 2 (non-indexed duplicate at [location of original + 0x8000]) | Yes |
| 0x104 | UMD certificates part 3 (non-indexed duplicate at [location of original + 0x8000]) | Yes |
| 0x105 | UMD certificates part 4 (non-indexed duplicate at [location of original + 0x8000]) | Yes |
| 0x106 | UMD certificates part 5 (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
- Old PSP revision does not have leaves 0x46, 0x47
- Very old PSP revisions does not have leaf 0x140
- UMD certificates count can vary. For example PSP Go has more UMD certificates, and PS Vita too.
Uses[edit | edit source]
IPL[edit | edit source]
The Stage 2 IPL (main.bin) reads 3 leaves, 0x004, 0x005 and 0x006. These leaves play a significant part in the PSP as they are related to power. In TA-082 and TA-086 PSP's, these leaves are at different locations, causing a brick with the 1.50 IPL.
0x004
0000000000 6E 79 72 42 01 00 00 00-10 00 00 00 BB 01 AB 1F nyrB............ 0000000016 D8 00 24 00 14 31 14 00-94 01 48 00 D8 00 00 00 ..$..1....H.....
0x005
0000000000 67 68 6C 43 01 00 00 00-01 00 00 00 CA D9 E3 9B ghlC............ 0000000016 0A 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
0x006
0000000000 72 64 44 4D 01 00 00 00-07 00 00 00 85 BD 2C 75 rdDM..........,u 0000000016 00 00 00 85 83 81 80 00-00 00 00 00 00 00 00 00 ................
Chkreg.prx[edit | edit source]
sceChkregGetPsCode[edit | edit source]
sceChkregGetPsCode (function of chkreg.prx) reads the first IDPS certificate from leaf 0x100 or 0x120 and ?what? from leaf 0x102 or 0x122.
It gets the PSID from the IdStorage and converts it to PsCode.
Example of PSP PsCode: 00 00 00 01 00 03 00 01
The return from sceChkregGetPsCode is determined to be valid or invalid via Kirk command 18, just like other functions using IDPS certificates.
openpsid.prx[edit | edit source]
sceOpenPSIDGetPSID[edit | edit source]
sceOpenPSIDGetPSID (function of openpsid.prx) reads the first IDPS certificate contained in leaf 0x100 or 0x120 into a buffer using sceIdStorageLookup with the following args:
sceIdStorageLookup(0x120, 0x38, buf, 0xB8);
The 0xB8 bytes certificate buffer is then sent to Kirk command 18 using sceUtilsBufferCopyWithRange with the following args:
sceUtilsBufferCopyWithRange(0, 0, buf, 0xB8, 18);
It sends data to 2 modules: OpenPSID and memab. Once the scrambled buffer has been sent, "some check" is performed.
If sceUtilsBufferCopyWithRange is sucessful, this part of sceChkregGetPsCode returns 0, else it returns 0x80000108.
sceOpenPSIDGetOpenPSID[edit | edit source]
sceOpenPSIDGetOpenPSID (function of openpsid.prx) reads the IDPS certificate related to OpenPSID contained in leaves 0x101 and 0x102 or 0x121 and 0x122 into a buffer.
It first reads leaf 0x101 or 0x121 into a buffer. If this fails it returns 0xC0520001 and reads leaf 0x102 or 0x122 into the buffer. If it fails again, it returns 0xC0520002.
The 0xB8 bytes certificate buffer is then sent to Kirk command 18 using sceUtilsBufferCopyWithRange with the following args:
sceUtilsBufferCopyWithRange(0, 0, buf, 0xB8, 18);
If sceUtilsBufferCopyWithRange returns 1, OpenPSID returns 0xC0520001, else it returns 0.
Memab[edit | edit source]
Memab (memab.prx) reads 1 leaf, 0x100 or 0x120.
Mgr[edit | edit source]
Mgr (mgr.prx) reads 2 leaves, 0x040 and another unknown leaf.
0x040
00000001E0 03 86 00 20 F8 47 90 88-58 99 2E 88 F8 47 90 88 ... .G..X....G.. 00000001F0 25 00 00 00 64 99 2E 88-01 00 00 00 D0 99 2E 88 %...d...........
Another unknown leaf.
Power[edit | edit source]
Power (power.prx) reads 1 leaf, 0x0004. This leaf is related to power and is also read by the IPL.
Umdman[edit | edit source]
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.
USB[edit | edit source]
usb.prx[edit | edit source]
USB (usb.prx) reads 1 leaf, 0x041. This leaf has information on the USB types.
0x041
0000000000 4C 05 00 00 0A 03 53 00-6F 00 6E 00 79 00 00 00 L.....S.o.n.y... 0000000064 00 00 00 00 05 00 00 00-C8 01 00 00 16 03 50 00 ..............P. 0000000080 53 00 50 00 20 00 54 00-79 00 70 00 65 00 20 00 S.P. .T.y.p.e. . 0000000096 41 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 A............... 0000000128 00 00 00 00 00 00 00 00-00 00 00 00 C9 01 00 00 ................ 0000000144 16 03 50 00 53 00 50 00-20 00 54 00 79 00 70 00 ..P.S.P. .T.y.p. 0000000160 65 00 20 00 42 00 00 00-00 00 00 00 00 00 00 00 e. .B........... 0000000208 CA 01 00 00 16 03 50 00-53 00 50 00 20 00 54 00 ......P.S.P. .T. 0000000224 79 00 70 00 65 00 20 00-43 00 00 00 00 00 00 00 y.p.e. .C....... 0000000272 00 00 00 00 CB 01 00 00-16 03 50 00 53 00 50 00 ..........P.S.P. 0000000288 20 00 54 00 79 00 70 00-65 00 20 00 44 00 00 00 .T.y.p.e. .D... 0000000336 00 00 00 00 00 00 00 00-CC 01 00 00 16 03 50 00 ..............P. 0000000352 53 00 50 00 20 00 54 00-79 00 70 00 65 00 20 00 S.P. .T.y.p.e. . 0000000368 45 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 E...............
Offset Description Data
0x0000 idVendor 0x4C 0x05
0x0002 ??? 0x00 0x00
0x0004 bLength 0x0A
0x0005 ??? 0x03
0x0006 iManufacturer String 0x53 0x00 0x6F 0x00 0x6E 0x00 0x79
0x0044 ? bNum 0x05
0x0045 ??? 0x00 0x00 0x00
0x0048 idProduct 0xC8 0x01
0x004A ??? 0x00 0x00
0x004C bLength 0x16
0x004D ? bDescriptorType 0x03
0x004E iProduct String 0x50 0x00 0x53 0x00 0x50 0x00 0x20
0x00 0x54 0x00 0x79 0x00 0x70 0x00
0x65 0x00 0x20 0x00 0x41
0x008C idProduct 0xC9 0x01
0x008E ??? 0x00 0x00
0x0090 bLength 0x16
0x0091 ? bDescriptorType 0x03
0x0092 iProduct String 0x50 0x00 0x53 0x00 0x50 0x00 0x20
0x00 0x54 0x00 0x79 0x00 0x70 0x00
0x65 0x00 0x20 0x00 0x42
0x00D0 idProduct 0xCA 0x01
0x00D2 ??? 0x00 0x00
0x00D4 bLength 0x16
0x00D5 ? bDescriptorType 0x03
0x00D6 iProduct String 0x50 0x00 0x53 0x00 0x50 0x00 0x20
0x00 0x54 0x00 0x79 0x00 0x70 0x00
0x65 0x00 0x20 0x00 0x43
0x0114 idProduct 0xCB 0x01
0x0116 ??? 0x00 0x00
0x0118 bLength 0x16
0x0119 ? bDescriptorType 0x03
0x011A iProduct String 0x50 0x00 0x53 0x00 0x50 0x00 0x20
0x00 0x54 0x00 0x79 0x00 0x70 0x00
0x65 0x00 0x20 0x00 0x44
0x0158 idProduct 0xCC 0x01
0x015A ??? 0x00 0x00
0x015C bLength 0x16
0x015D ? bDescriptorType 0x03
0x015E iProduct String 0x50 0x00 0x53 0x00 0x50 0x00 0x20
0x00 0x54 0x00 0x79 0x00 0x70 0x00
0x65 0x00 0x20 0x00 0x45
usbstor.prx[edit | edit source]
USBstor (usbstor.prx) reads 1 leaf, ?0x040 or 0x043?.
?0x040 or 0x043?
0000000000 55 73 74 72 53 6F 6E 79-20 20 20 20 50 53 50 20 UstrSony PSP 0000000016 20 20 20 20 20 20 20 20-20 20 20 20 31 2E 30 30 1.00 0000000032 50 00 53 00 50 00 00 00-00 00 00 00 00 00 00 00 P.S.P...........
WLAN[edit | edit source]
WLAN (wlan.prx) reads 2 leaves, 0x044 and 0x045.
0x044
0000000000 00 16 FE 86 FA 28 .....(
0x045
0000000000 03 00 01 ...
These leaves contains the MAC address of the PSP. This can be changed, but does not effect the hardware, only the address displayed under System Information.
Sysconf_plugin[edit | edit source]
Sysconf_plugin (sysconf_plugin.prx) reads 1 leaf, 0x044. This is probably why the VSH displays a different MAC address when leaves 0x044/0x045 are changed.
Vshmain[edit | edit source]
Vshmain (vshmain.prx) reads 1 leaf, 0x046.
0x046
Empty, however vshmain uses the first byte of this leaf to set a param for vshImposeSetParam.
Key 0x054[edit | edit source]
This key controls what the default background color is set to on initial setup and also denotes what color of shell the board shipped with. It was introduced with 02g and consists of 3 bytes on every retail model except 01g (non-existent) and 05g (4 bytes, needs more research). The first byte has 3 options: 00 sets the default color to the "By Month" option, 01 (or any other byte 1 value that's not 00 or 02) will set the color in hexadecimal order from 1-12.bmp or 13-27.bmp that matches byte 2, 02 (only found on 02g so far) will set the default color to a specified color depending on the value of byte 3 if byte 3 is between 00 and 06 (if byte 3 is 07 or higher, then functionality is the same as setting byte 1 to anything other than 00 or 02). Byte 2 can be any hexadecimal number between 00 and 21, anything higher than 21 will result in a default background of solid white with no visible wave. Byte 3 seems to be linked to the color of the original shell and increments chronologically as more colors were released.
A key 0x054 value of 020002 would be a 02g in Ice Silver with a default background color of 26 (middle dark gray/black option), a value of 010410 would be a Spirited Green system with a default background color of 5 (dark green), and a value of 00001D would be a Charcoal Black system that defaults to the "By Month" color option.
Key 0x054 Byte 3 Color Table[edit | edit source]
| Byte 3 | Shell Color | Special Color
(Byte 1 = 02) |
First Release (02g+) |
|---|---|---|---|
| 00 | Piano Black | 26 | September 20th, 2007 |
| 01 | ?Ceramic White? | 26 | September 20th, 2007 |
| 02 | Ice Silver | 26 | September 20th, 2007 |
| 03 | ?Rose Pink? | 14 | September 20th, 2007 |
| 04 | ?Lavender Purple? | 17 | September 20th, 2007 |
| 05 | Felicia Blue | 20 | September 20th, 2007 |
| 06 | ?Mint Green? | 23 | February 28th, 2008 |
| 07 | ?Deep Red? | N/A | December 13th, 2007 |
| 08 | ?Matte Bronze? | N/A | April 24th, 2008 |
| 09 | N/A | ||
| 0A | N/A | ||
| 0B | Metallic Blue | N/A | July 17th, 2008 |
| 0C | Pearl White | N/A | October 15th, 2008 |
| 0D | Mystic Silver | N/A | October 14th, 2008 |
| 0E | Vibrant Blue | N/A | March 5th, 2009 |
| 0F | Radiant Red | N/A | March 5th, 2009 |
| 10 | Spirited Green | N/A | March 19th, 2009 |
| 11 | ?Bright Yellow? | N/A | March 19th, 2009 |
| 12 | ?Lilac Purple? | N/A | October 2009 |
| 13 | Turquoise Green | N/A | November 2009 |
| 14 | N/A | ||
| 15 | Blossom Pink | N/A | November 2009 |
| 16 | N/A | ||
| 17 | N/A | ||
| 18 | ?Black/Red? | N/A | February 10, 2011 |
| 19 | ?White/Blue? | N/A | February 10, 2011 |
| 1A | Monster Hunter Portable 3rd Hunters Lm. Ed. (3000MHB) | N/A | December 1, 2010 |
| 1B | Camouflage (MGS Peace Walker 3000) | N/A | March 18, 2011 |
| 1C | N/A | ||
| 1D | Charcoal Black | N/A | October 26, 2011 |
| 1E | Red/Black | N/A | November 17, 2011 |
| 1F | ?Sky Blue/Marine Blue? | N/A | April 26, 2012 |
| 20 | Ice White | N/A | July 2012 |
*Shell color entries with question marks are guesses based on release date and special color value and need to be verified.
Legality of distribution[edit | edit source]
There is question as to whether Sony are able to take legal action against those found to be distributing IDStorage leaves among the community, for research, repair, or otherwise. The worry is that the leaves are proprietary data (particularly UMD decryption leaves).