Cmep Key Ring Base: Difference between revisions

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Physical address: <code>0xE0058000 + 0x20 * keyring_number</code>.
Physical address: <code>0xE0058000 + 0x20 * keyring_number</code>.


Flags: See [[F00D_Keyring_Regs#0xE003002C:_KeyringQueryFlagsResponse|here]]
Flags: See [[Cmep_registers#0xE003002C:_KeyringQueryFlagsResponse|here]]


= Keyring information =
= Keyring information =
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| 0x00000003
| 0x00000003
| ?
| ?
| ?
| Fuses
| ?
| ?
|-
|-
Line 194: Line 194:
| rowspan="2" | 0x006F0003
| rowspan="2" | 0x006F0003
| rowspan="2" | Y
| rowspan="2" | Y
| rowspan="7" | Bigmac
| rowspan="7" | Fuses
| AES-256 master key for IdStorage Certificates AES-128-ECB keys derivation. Used by KIRK commands 0x10, 0x12, 0x17 and 0x19.
| AES-256 master key for IdStorage Certificates AES-128-ECB keys derivation. Used by KIRK commands 0x10, 0x12, 0x17 and 0x19.
|-
|-
Line 201: Line 201:
| 0x006F0003
| 0x006F0003
| Y
| Y
| Bigmac -->
| Fuses -->
| ?
| ?
|-
|-
Line 207: Line 207:
| rowspan="3" | 0x00AF0003
| rowspan="3" | 0x00AF0003
| rowspan="3" | 0x00A00003
| rowspan="3" | 0x00A00003
| rowspan="2" | ?
| rowspan="2" | Y
<!-- | Bigmac -->
<!-- | Fuses -->
| Master key used to derive key used to decrypt personalized layer over [[SLSK]]. Should be per-console.
| Master key used to derive key that decrypts personalized layer over [[SLSK]].  
|-
|-
| 0x207
| 0x207
Line 215: Line 215:
| 0x00A00003
| 0x00A00003
| ?
| ?
| Bigmac -->
| Fuses -->
| Master key used instead of keyring 0x206 when first_loader secret debug mode is set. (Possibly non-per-console?)
| Master key used instead of keyring 0x206 when first_loader secret debug mode is set.
|-
|-
| 0x208-0x20D
| 0x208-0x20D
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| 0x00A00003 -->
| 0x00A00003 -->
| N
| N
<!-- | Bigmac -->
<!-- | Fuses -->
| 6 master keys used to derive AES-128-CBC Key to decrypt [[SLSK]] metadata. Which one is used depends on encryption key revision in [[SLSK]] header.
| 6 master keys used to derive AES-128-CBC Key that decrypts [[SLSK]] metadata. Which one is used depends on encryption key revision in [[SLSK]] header.
|-
|-
| 0x20E
| 0x20E
| rowspan="2" | 0xXXXX0003
| rowspan="2" | 0xXXXX0003
| rowspan="2" | 0x00100003
| rowspan="2" | 0x00100003
| rowspan="2" | ?
| rowspan="2" | Y
<!-- | Bigmac -->
<!-- | Fuses -->
| Maybe per-console eMMC crypto keys. Protected by second_loader.
| per-console eMMC crypto keys.
|-
|-
| 0x20F
| 0x20F
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| 0x00100003
| 0x00100003
| ?
| ?
| Bigmac -->
| Fuses -->
| Maybe per-console eMMC crypto keys. Protected by first_loader.
| per-console eMMC crypto keys.
|-
|-
| 0x210-0x211
| 0x210-0x211
Line 243: Line 243:
| 0x00000003
| 0x00000003
| ?
| ?
| ?
| Fuses
| ?
| ?
|-
|-
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| rowspan="2" | 0x001F0003
| rowspan="2" | 0x001F0003
| rowspan="2" | Y
| rowspan="2" | Y
| rowspan="2" | Bigmac
| rowspan="2" | Fuses
| AES-256-CMAC key used by KIRK commands 0x12 and 0x19.
| AES-256-CMAC key used by KIRK commands 0x12 and 0x19.
|-
|-
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| rowspan="2" | 0x00000003
| rowspan="2" | 0x00000003
| rowspan="2" | ?
| rowspan="2" | ?
| rowspan="2" | ?
| rowspan="2" | Fuses
| AES-256-CBC key used to derive (by seed encryption) keyrings 0x514 and 0x515 in second_loader. IVs and seeds hardcoded in second_loader.
| AES-256-CBC key used to derive (by seed encryption) keyrings 0x514 and 0x515 in second_loader. IVs and seeds hardcoded in second_loader.
|-
|-
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| 0x001F0003
| 0x001F0003
| Y
| Y
| Bigmac
| Fuses
| AES-256-CBC key used to derive (by seed encryption) keyrings 0x502-0x504 in second_loader. IV hardcoded in second_loader. If SMI minimum FW < 0.996, this key is not used and keyrings 0x502-0x504 are set with hardcoded values from second_loader.
| AES-256-CBC key used to derive (by seed encryption) keyrings 0x502-0x504 in second_loader. IV hardcoded in second_loader. If SMI minimum FW < 0.996, this key is not used and keyrings 0x502-0x504 are set with hardcoded values from second_loader.
|-
|-
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| 0x00000003
| 0x00000003
| ?
| ?
| ?
| Fuses
| ?
| ?
|-
|-
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! Keyring !! Initial flags !! Flags after kernel boot !! Per-console !! Set By !! Description
! Keyring !! Initial flags !! Flags after kernel boot !! Per-console !! Set By !! Description
|-
|-
| 0x300-0x33F || 0x00020003 || 0x00000003 || ? || ? || ?
| 0x300-0x33F || 0x00020003 || 0x00000003 || N || ROM || ?
|-
| 0x340 || 0x012F0003 || 0x012F0003 || N || ROM || Used to decrypt keys into the 0x10 keyring.
|-
| 0x341-0x343 || 0x012F0003 || 0x01200003 || N || ROM || ?
|-
| 0x344 || 0x022F0003 || 0x02200003 || N || ROM || Master key used to derive the 0x20 keyring in first_loader.
|-
|-
| 0x340 || 0x012F0003 || 0x012F0003 || ? || ? || Used to decrypt keys into the 0x10 keyring.
| 0x345 || 0x022F0003 || 0x022F0003 || N || ROM || Used by GameCard authentication command 56.
|-
|-
| 0x341-0x343 || 0x012F0003 || 0x01200003 || ? || ? || ?
| 0x346 || 0x022F0003 || 0x022F0003 || N || ROM || Used to decrypt keys into one of the 0x21-0x24 keyrings.
|-
|-
| 0x344 || 0x022F0003 || 0x02200003 || ? || ? || Master key used to derive the 0x20 keyring in first_loader.
| 0x347 || 0x022F0003 || 0x022F0003 || N || ROM || Used to decrypt keys into one of the 0x21-0x24 keyrings.
|-
|-
| 0x345-0x348 || 0x022F0003 || 0x022F0003 || ? || ? || Used to decrypt keys into one of the 0x21-0x24 keyrings.
| 0x348 || 0x022F0003 || 0x022F0003 || N || ROM || Used by GameCard authentication command 56.
|-
|-
| 0x349-0x353 || 0x022F0003 || 0x02200003 || ? || ? || ?
| 0x349-0x353 || 0x022F0003 || 0x02200003 || N || ROM || ?
|-
|-
| 0x354-0x3FF || 0x001F0003 || 0x00000003 || ? || ? || ?
| 0x354-0x3FF || 0x001F0003 || 0x00000003 || N || ROM || ?
|}
|}


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| 0x500 || 0x18000001 || 0x18000001 || ? || ? || ?
| 0x500 || 0x18000001 || 0x18000001 || ? || ? || ?
|-
|-
| 0x501 || 0x18000001? || 0x10000007 || N || first_loader || Used by first_loader to figure out whether to load from eMMC or ARM comms after reset. Also [[SLSK]] AES Key revision on offset>0x1C-byte>bit:0xF0000000
| 0x501 || 0x18000001? || 0x10000007 || N || first_loader
| Offset 0x0: <code>bootRomStatus</code> (selects first_loader load source after reset - eMMC/ARM comms)
Offset 0x1C: [[SLSK]] AES Key revision (bitmask <code>0xF0000000</code>)
|-
|-
| 0x502 || 0x18000001 || 0x18000003 || Y || second_loader || AES XTS Tweak for Ernie SNVS sectors.
| 0x502 || 0x18000001 || 0x18000003 || Y || second_loader || AES XTS Tweak for Ernie SNVS sectors.
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| 0x50B || 0x18000001 || 0x18000003 || Y || second_loader || Mgmt Data. 8 bytes. Comes from [[Ernie]] SNVS block 0 ([[Ernie]] command 0xD2).
| 0x50B || 0x18000001 || 0x18000003 || Y || second_loader || Mgmt Data. 8 bytes. Comes from [[Ernie]] SNVS block 0 ([[Ernie]] command 0xD2).
|-
|-
| 0x50C || 0x18000001 || 0x18000003 || N || second_loader || [[Second_Loader#Boot_type_indicator_for_slsk]]
| 0x50C || 0x18000001 || 0x18000003 || N || second_loader || [[Second_Loader#Boot_type_indicator_1_for_SLSK]]
|-
|-
| 0x50D || 0x18000001 || 0x18000003 || Y || second_loader || OpenPSID of unit. Comes from IdStorage (eMMC).
| 0x50D || 0x18000001 || 0x18000003 || Y || second_loader || OpenPSID of unit. Comes from IdStorage (eMMC).
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| 0x510 || 0x18000001 || 0x18000003 || Y || second_loader || [[KBL Param#DIP_Switches|DIP Switches]]. 0x20 bytes. Comes from CP and [[Ernie]] ScratchPad ([[Ernie]] command 0x90 offset 0xE0).
| 0x510 || 0x18000001 || 0x18000003 || Y || second_loader || [[KBL Param#DIP_Switches|DIP Switches]]. 0x20 bytes. Comes from CP and [[Ernie]] ScratchPad ([[Ernie]] command 0x90 offset 0xE0).
|-
|-
| 0x511 || 0x18000001 || 0x18000003 || N (random) || second_loader || Ernie communication session key. Unique per boot. It is generated by a handshake with Ernie through Ernie command 0xD0. AES-128-ECB key used to enc/dec the content of Ernie secure packets. If (ernieVersion < 0x90903 && (ernieDLVersion & 0xffffff) < 0x3600) it is zeroed by second_loader. Part of SKSO data. Used by secure_kernel command 0xF01.
| 0x511 || 0x18000001 || 0x18000003 || N (random) || second_loader || Ernie communication session key. Unique per boot. It is generated by a handshake with Ernie through Ernie command 0xD0. AES-128-ECB key used to encrypt/decrypt the content of Ernie secure packets. If (ernieVersion < 0x90903 && (ernieDLVersion & 0xffffff) < 0x3600) it is zeroed by second_loader. Part of SKSO data. Used by secure_kernel command 0xF01.
|-
|-
| 0x512 || 0x18000001? || 0x18000007 || N (counter) || second_loader || Ernie communication ticket count. Used as a challenge at the start of each secure Ernie encrypted communication, for example for SNVS read/write. On each boot it is set to a random value by second_loader. Incremented by 1 after each Ernie secure commmand usage. Part of SKSO data. Used by secure_kernel command 0xF01.
| 0x512 || 0x18000001? || 0x18000007 || N (counter) || second_loader || Ernie communication ticket count. Used as a challenge at the start of each secure Ernie encrypted communication, for example for SNVS read/write. On each boot it is set to a random value by second_loader. Incremented by 1 after each Ernie secure commmand usage. Part of SKSO data. Used by secure_kernel command 0xF01.
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       Bit 0~15: HasRsaRevocationKey. This is set to 0xFFFF.
       Bit 0~15: HasRsaRevocationKey. This is set to 0xFFFF.
       Bit  16: UseAlternativeEmmcClock
       Bit  16: UseAlternativeEmmcClock
       Bit  17: might emmc clock speed option.
       Bit  17: Maybe eMMC clock speed option.


{| class="wikitable"
{| class="wikitable"
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! Keyring !! Initial flags !! Flags after kernel boot !! Per-console !! Set By !! Description
! Keyring !! Initial flags !! Flags after kernel boot !! Per-console !! Set By !! Description
|-
|-
| 0x600 || 0x10000003 || 0x10000003 || Y || Bigmac || VisibleId of unit.
| 0x600 || 0x10000003 || 0x10000003 || Y || Fuses || VisibleId of unit. Can also be obtained through [[Syscon UART RPC]] command 0x120.
|-
| 0x601 || 0x10000003 || 0x10000003 || Y || Fuses || First half (0x20 bytes) of [https://www.psdevwiki.com/psp/index.php?title=Kirk#PSP_Individual_Key_Mesh_Certificate ScePspIndividualKeyMeshCert]. Copied to 0xE0020120 by second_loader.
|-
|-
| 0x601 || 0x10000003 || 0x10000003 || Y || ? || Copied to 0xE0020200 by second_loader in 0.931
| 0x602 || 0x10000003 || 0x10000003 || Y || Fuses || Second half (0x20 bytes) of [https://www.psdevwiki.com/psp/index.php?title=Kirk#PSP_Individual_Key_Mesh_Certificate ScePspIndividualKeyMeshCert]. Copied to 0xE0020100 by second_loader.
|-
|-
| 0x602 || 0x10000003 || 0x10000003 || Y || Bigmac || 256 bits copied to 0xE0020100 by second_loader.
| 0x603 || 0x10000003 || 0x10000003 || N || Fuses || [[SLSK]] RSA public key flags
|-
|-
| 0x603 || 0x10000003 || 0x10000003 || Y || Bigmac || [[SLSK]] RSA public key has flags
| 0x604 || 0x10000003 || 0x10000003 || N || Fuses || ?
|-
|-
| 0x604 || 0x10000003 || 0x10000003 || ? || ? || ?
| 0x605 || 0x10000003 || 0x00000003 || N || Fuses || ?
|-
|-
| 0x605-0x607 || 0x10000003 || 0x00000003 || ? || ? || ?
| 0x606 || 0x10000003 || 0x00000003 || Y || Fuses || ?
|-
|-
| 0x608-0x6FF
| 0x607 || 0x10000003 || 0x00000003 || Y || Fuses || ?
| 0x00000000
|-
| 0x00000000
| 0x608-0x6FF || 0x00000000 || 0x00000000 || X || N/A || Does not exist.
| X
| N/A
| Not exist.
|}
|}


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! Keyring !! Initial flags !! Flags after kernel boot !! Per-console !! Set By !! Description
! Keyring !! Initial flags !! Flags after kernel boot !! Per-console !! Set By !! Description
|-
|-
| 0x700-0x7FF || 0x10000003 || 0x00000003 || N || Bigmac || 16 RSA public keys for [[SLSK]] files. Which key is used depends on public key revision specified in [[SLSK]] header.
| 0x700-0x77F || 0x10000003 || 0x00000003 || N || ROM || 16 RSA public keys for [[SLSK]] files. Which key is used depends on public key revision specified in [[SLSK]] header.
|-
| 0x780-0x7FF || 0x00000000 || 0x00000000 || N || ROM || -
|}
|}

Latest revision as of 19:07, 9 October 2024

Physical address: 0xE0058000 + 0x20 * keyring_number.

Flags: See here

Keyring information

0x0~0xFF: Slave keyrings

 Initial state: Empty keyrings.
   0x000-0x007: Empty group0 slave keyrings, for AES decryption only.
   0x008-0x00F: Empty group1 slave keyrings, any algorithm.
   0x010-0x01F: Empty group2 slave keyrings, for AES decryption only.
   0x020-0x02F: Empty group3 slave keyrings, any algorithm.
   0x030-0x07F: Empty normal keyrings, any algorithm.
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0 0x04420001 0x04420003 Y/N Secure Modules General common keyring for crypto operation.
1 0x04420001 ? ? ?
2-7 0x00400001
8 0x049F0001 0x00810003 Y first_loader SLSK personalization key. Derived from keyrings 0x206.
9 0x00800001 SLSK personalization key. Derived from keyrings 0x207.
0xA-0xF 0x00800003 N 6 SLSK metadata decryption keys. Derived from keyrings 0x208-0x20D.
0x10 0x05020001 0x05020001 ? ? Supports decryption only.
0x11-0x1F 0x01000001 ?
0x20 0x061F0001 0x02000003 N first_loader SLSK HMAC-SHA256 Key. Derived from keyring 0x344.
0x21-0x24 0x061F0001 ? N/A Supports encryption and decryption.
0x25-0x2F 0x02000001 ?
0x30-0x34 0x041F0001 0x041F0001
0x35-0x7F 0x00000001
0x80-0xFF 0x00000000 0x00000000 Not exist.

0x100~0x1FF: Slave keyrings (Reserved)

 Initial state: Empty keyrings.
   0x100-0x17F: Empty normal keyrings, any algorithm.
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0x100 0x041F0001 0x041F0001 ? ? ?
0x101-0x13F 0x00000001 0x00000001 ? ? ?
0x140-0x17F 0x041F0001
0x180-0x1FF 0x00000000 0x00000000 N/A Not exist.

0x200~0x2FF: Master keyrings

 Initial state: Filled in, key material.
   0x200-0x203: AES decryption-only keys (for memory buffers).
   0x204-0x205: Master keys (for group0), any algorithm.
   0x206-0x20D: Master keys (for group1), any algorithm.
   0x20E-0x20F: Emmc keys, fully protected.
   0x210-0x217: General purpose keys (for memory buffers).
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0x200-0x203 0x00020003 0x00000003 ? Fuses ?
0x204 0x006F0003 0x006F0003 Y Fuses AES-256 master key for IdStorage Certificates AES-128-ECB keys derivation. Used by KIRK commands 0x10, 0x12, 0x17 and 0x19.
0x205 ?
0x206 0x00AF0003 0x00A00003 Y Master key used to derive key that decrypts personalized layer over SLSK.
0x207 Master key used instead of keyring 0x206 when first_loader secret debug mode is set.
0x208-0x20D N 6 master keys used to derive AES-128-CBC Key that decrypts SLSK metadata. Which one is used depends on encryption key revision in SLSK header.
0x20E 0xXXXX0003 0x00100003 Y per-console eMMC crypto keys.
0x20F per-console eMMC crypto keys.
0x210-0x211 0x001F0003 0x00000003 ? Fuses ?
0x212 0x001F0003 Y Fuses AES-256-CMAC key used by KIRK commands 0x12 and 0x19.
0x213 AES-256-CBC key used to derive (by seed encryption) SMI keys in second_loader, which are used for minimum firmware version decryption.
0x214 0x00000003 ? Fuses AES-256-CBC key used to derive (by seed encryption) keyrings 0x514 and 0x515 in second_loader. IVs and seeds hardcoded in second_loader.
0x215 ?
0x216 0x001F0003 Y Fuses AES-256-CBC key used to derive (by seed encryption) keyrings 0x502-0x504 in second_loader. IV hardcoded in second_loader. If SMI minimum FW < 0.996, this key is not used and keyrings 0x502-0x504 are set with hardcoded values from second_loader.
0x217 0x00000003 ? Fuses ?
0x218-0x2FF 0x00000000 0x00000000 X N/A Not exist.

0x300~0x3FF: Master keyrings 2

 Initial state: Filled in, key material.
   0x300-0x33F: AES decryption-only keys (for memory buffers).
   0x340-0x343: Master keys (for group2), any algorithm.
   0x344-0x353: Master keys (for group3), any algorithm.
   0x354-0x3FF: General purpose keys (for memory buffers).
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0x300-0x33F 0x00020003 0x00000003 N ROM ?
0x340 0x012F0003 0x012F0003 N ROM Used to decrypt keys into the 0x10 keyring.
0x341-0x343 0x012F0003 0x01200003 N ROM ?
0x344 0x022F0003 0x02200003 N ROM Master key used to derive the 0x20 keyring in first_loader.
0x345 0x022F0003 0x022F0003 N ROM Used by GameCard authentication command 56.
0x346 0x022F0003 0x022F0003 N ROM Used to decrypt keys into one of the 0x21-0x24 keyrings.
0x347 0x022F0003 0x022F0003 N ROM Used to decrypt keys into one of the 0x21-0x24 keyrings.
0x348 0x022F0003 0x022F0003 N ROM Used by GameCard authentication command 56.
0x349-0x353 0x022F0003 0x02200003 N ROM ?
0x354-0x3FF 0x001F0003 0x00000003 N ROM ?

0x400~0x4FF: RW storage keyrings (Reserved)

 Initial state: Empty data storage, read-write from keyring.
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0x400-0x47F 0x18000001 0x00000001 ? ? ?
0x480-0x4FF 0x00000000 0x00000000 X N/A Not exist.

0x500~0x5FF: RW storage keyrings

 Initial state: Empty data storage, read-write from keyring.
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0x500 0x18000001 0x18000001 ? ? ?
0x501 0x18000001? 0x10000007 N first_loader Offset 0x0: bootRomStatus (selects first_loader load source after reset - eMMC/ARM comms)

Offset 0x1C: SLSK AES Key revision (bitmask 0xF0000000)

0x502 0x18000001 0x18000003 Y second_loader AES XTS Tweak for Ernie SNVS sectors.
0x503 0x18000001 0x18000003 Y second_loader AES XTS Decryption Key for Ernie SNVS sectors.
0x504 0x18000001 0x18000003 Y second_loader AES-128-CMAC Key for Ernie SNVS sectors.
0x505 0x18000001 0x00000001 ? ? ?
0x506 0x18000001 0x18000003 N second_loader QAF Token AES-256-CBC and AES-256-CMAC key. Hardcoded in second_loader. Used with IV = keyring 0x507.
0x507 0x18000001 0x18000003 N second_loader QAF Token AES-256-CBC IV. Hardcoded in second_loader.
0x508 0x18000001 0x18000003 Y second_loader Ernie version. Comes from Ernie Code Flash memory (Ernie command 1). 4 bytes. If lower (older) than 0x00090903, old Ernie protocols (unencrypted SNVS packets and maybe different SNVS keys) are used.
0x509 0x18000001 0x18000003 Y second_loader ConsoleId of unit. Comes from IdStorage (eMMC).
0x50A 0x18000001? 0x18000007 Y second_loader QA flags. 0x10 bytes. Comes from Ernie NVS (Ernie command 0x1082).
0x50B 0x18000001 0x18000003 Y second_loader Mgmt Data. 8 bytes. Comes from Ernie SNVS block 0 (Ernie command 0xD2).
0x50C 0x18000001 0x18000003 N second_loader Second_Loader#Boot_type_indicator_1_for_SLSK
0x50D 0x18000001 0x18000003 Y second_loader OpenPSID of unit. Comes from IdStorage (eMMC).
0x50E 0x18000001 1.69: 0x18000003

3.60: 0x10000003

Y second_loader Current System Software version. Comes from Ernie SNVS sector 1 first block (Ernie command 0xD0). Used by secure_kernel for KPRX version checks.
0x50F 0x18000001 0x18000003 Y second_loader Minimum firmware version. 4 bytes. Comes from IdStorage SMI leaf (eMMC).
0x510 0x18000001 0x18000003 Y second_loader DIP Switches. 0x20 bytes. Comes from CP and Ernie ScratchPad (Ernie command 0x90 offset 0xE0).
0x511 0x18000001 0x18000003 N (random) second_loader Ernie communication session key. Unique per boot. It is generated by a handshake with Ernie through Ernie command 0xD0. AES-128-ECB key used to encrypt/decrypt the content of Ernie secure packets. If (ernieVersion < 0x90903 && (ernieDLVersion & 0xffffff) < 0x3600) it is zeroed by second_loader. Part of SKSO data. Used by secure_kernel command 0xF01.
0x512 0x18000001? 0x18000007 N (counter) second_loader Ernie communication ticket count. Used as a challenge at the start of each secure Ernie encrypted communication, for example for SNVS read/write. On each boot it is set to a random value by second_loader. Incremented by 1 after each Ernie secure commmand usage. Part of SKSO data. Used by secure_kernel command 0xF01.
0x513 0x18000001 0x18000003 Y second_loader DRAM size. Set to 0x20000000 by default, 0x40000000 on DevKit in DevKit Memory Size mode. Determined by DIP Switches (CP).
0x514 0x18000001 0x18000003 see keyring 0x214 second_loader SKSO AES-256-CMAC key. Protected on FW 1.05. Data size 0x90 bytes. Used to verify SKSO. Used by secure_kernel command 0xF01.
0x515 0x18000001 0x18000003 see keyring 0x214 second_loader SKSO AES-128-CBC key. Protected on FW 1.05. Data size 0xA0 bytes. Hardcoded IV in second_loader and second_kernel. Used to encrypt/decrypt SKSO (the content written into keyrings 0x511, 0x512, 0x517 and 0x519). Used by secure_kernel command 0xF01.
0x516 0x18000001? 0x18000007 N second_loader Some status. Set to 0 at the start of second_loader main(). Checked for 0 before initiating communication with Ernie. 4 bytes. Used by secure_kernel command 0xF01: writes (u32)1 here after having exported the SKSO to paddr 0x4001FF00.
0x517 0x18000001 0x18000003 Y second_loader, act_sm Kit Activation status. 4 bytes. Part of SKSO data. When initializing the keyrings, this is zeroed if keyring ?0x50D? has bit8 clear (on FW 1.692). Used by secure_kernel command 0xF01.
0x518 0x18000001 0x18000003 Y second_loader Fallback current System Software version (3.60+?). Comes from SNVS sector 1 second block (Ernie command 0xD0). Used in in update_service_sm command 0x40002 as fallback for "os0" SPKGs version checks.
0x519 0x18000001 0x18000003 Y? second_loader/utoken_sm Part of SKSO data. Used by secure_kernel command 0xF01. Not used (maybe zeroed) on old FWs. Used on FW 3.60.
0x51A 0x18000001 0x18000003 N (random) second_loader Coredump Encrypted Session Key (FW 2.12+). Randomized 0x20 byte key. Unique for every boot/reboot/resume. Used for Kernel coredump encryption. See KBL Param and SCECAF#Kernel_Coredump_Encrypted_ELF. Used by secure_kernel command 0x1001.
0x51B 0x18000001 0x18000003 Y second_loader Hardware Info. 4 bytes. Comes from Ernie Code Flash memory (Ernie command 5).
0x51C-0x51D 0x18000001 0x00000001 ? ? Used in update_service_sm for NVS. 4 bytes for each keyring.
0x51E-0x521 0x18000001 0x00000001 ? ? Used in update_service_sm for NVS. 4 bytes for each keyring.
0x522-0x57F 0x18000001 0x00000001 ? ? ?
0x580-0x5FF 0x00000000 0x00000000 X N/A Not exist.

0x600~0x6FF: OTP keyrings

 Initial state: Filled in data, read-only. Keyring only.
   0x603: DWORD BootromFlags.
     Bit 0~15: HasRsaRevocationKey. This is set to 0xFFFF.
     Bit   16: UseAlternativeEmmcClock
     Bit   17: Maybe eMMC clock speed option.
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0x600 0x10000003 0x10000003 Y Fuses VisibleId of unit. Can also be obtained through Syscon UART RPC command 0x120.
0x601 0x10000003 0x10000003 Y Fuses First half (0x20 bytes) of ScePspIndividualKeyMeshCert. Copied to 0xE0020120 by second_loader.
0x602 0x10000003 0x10000003 Y Fuses Second half (0x20 bytes) of ScePspIndividualKeyMeshCert. Copied to 0xE0020100 by second_loader.
0x603 0x10000003 0x10000003 N Fuses SLSK RSA public key flags
0x604 0x10000003 0x10000003 N Fuses ?
0x605 0x10000003 0x00000003 N Fuses ?
0x606 0x10000003 0x00000003 Y Fuses ?
0x607 0x10000003 0x00000003 Y Fuses ?
0x608-0x6FF 0x00000000 0x00000000 X N/A Does not exist.

0x700~0x7FF: SLSK RSA Public keyrings

 Initial state: Filled in data, read-only. Keyring only.
Keyring Initial flags Flags after kernel boot Per-console Set By Description
0x700-0x77F 0x10000003 0x00000003 N ROM 16 RSA public keys for SLSK files. Which key is used depends on public key revision specified in SLSK header.
0x780-0x7FF 0x00000000 0x00000000 N ROM -
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