Cmep Key Ring Base

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Keyring physical address = 0xE0058000 + 0x20 * keyring_id.

Keyring flags: See upper value (16~31-bit)

Key Rings

Keyring ID Initial IsValid Initial flags first half Flags first half (1.69) Ever IsValid (1.69) Per Console (1.69) Set By Description
0 N 0x0442 0x0442 Y N Many Secure Modules. General common keyring for crypto operation.
1 N 0x0442 0x0442 N ? ? ?
2-7 N 0x0442 0x0040 N ? ? ?
8 N 0x049F 0x0081 Y Y first_loader SLSK personalization key (encrypt). Derived from keyrings 0x206 or 0x207.
9 N 0x049F 0x0080 N ? first_loader SLSK personalization key (decrypt). Derived from keyrings 0x206 or 0x207.
0xA-0xF N 0x049F 0x0080 Y N first_loader 6 SLSK metadata decryption keys. Derived from keyrings 0x208-0x20D.
0x10 N 0x0502 0x0502 N ? ? Supports decryption only.
0x11-0x1F N 0x0502 0x0100 N ? ? ?
0x20 N 0x061F 0x0200 Y ? first_loader SLSK HMAC-SHA256 Key. Derived from keyring 0x344.
0x21-0x24 N 0x061F 0x061F N ? ? Supports encryption and decryption.
0x25-0x2F N 0x061F 0x0200 N ? ? ?
0x30-0x34 N 0x041F 0x041F N ? ? ?
0x35-0x7F N 0x041F 0x0000 N ? ? ?
0x80-0xFF X 0x0000 0x0000 X ? ? Not used.
0x100 N 0x041F 0x041F N ? ? ?
0x101-0x17F N 0x041F 0x0000 N ? ? ?
0x180-0x1FF X 0x0000 0x0000 X ? ? Not used.
0x200-0x203 Y 0x0002 0x0000 Y ? ? ?
0x204 Y 0x006F 0x006F Y Y ? AES-256 master key for IdStorage Certificates AES-128-ECB keys derivation. Used by KIRK commands 0x10, 0x12, 0x17 and 0x19.
0x205 Y 0x006F 0x006F Y Y ? ?
0x206 Y 0x00AF 0x00A0 Y ? ? Master key used to derive key used to decrypt personalized layer over SLSK. Should be per-console.
0x207 Y 0x00AF 0x00A0 Y ? ? Master key used instead of keyring 0x206 when first_loader secret debug mode is set. (Possibly non-per-console?)
0x208-0x20D Y 0x00AF 0x00A0 Y ? ? 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.
0x20E-0x20F Y ? 0x0010 Y ? ? Maybe per-console eMMC crypto keys? Protected by second_loader.
0x210-0x211 Y 0x001F 0x0000 Y ? ? ?
0x212 Y 0x001F 0x001F Y Y ? AES-256-CMAC key used by KIRK commands 0x12 and 0x19.
0x213 Y 0x001F 0x001F Y Y ? AES-256-CBC key used to derive (by seed encryption) SMI keys in second_loader, which are used for minimum firmware version decryption.
0x214 Y 0x001F 0x0000 Y ? ? 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 Y 0x001F 0x0000 Y ? ? ?
0x216 Y 0x001F 0x001F Y Y ? 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 Y 0x001F 0x0000 Y ? ? ?
0x218-0x2FF X 0x0000 0x0000 X ? ? Not used.
0x300-0x33F Y 0x0002 0x0000 Y ? ? ?
0x340 Y 0x012F 0x012F Y ? ? Used to decrypt keys into the 0x10 keyring.
0x341-0x343 Y 0x012F 0x0120 Y ? ? ?
0x344 Y 0x022F 0x0220 Y ? ? Master key used to derive the 0x20 keyring in first_loader.
0x345-0x348 Y 0x022F 0x022F Y ? ? Used to decrypt keys into one of the 0x21-0x24 keyrings.
0x349-0x353 Y 0x022F 0x0220 Y ? ? ?
0x354-0x3FF Y 0x001F 0x0000 Y ? ? ?
0x400-0x47F N 0x1800 0x0000 N ? ? ?
0x480-0x4FF X 0x0000 0x0000 X ? ? Not used.
0x500 N 0x1800 0x1800 N ? ? ?
0x501 N 0x1800 0x1000 Y 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
0x502 N 0x1800 0x1800 Y Y second_loader AES XTS Tweak for Ernie SNVS sectors.
0x503 N 0x1800 0x1800 Y Y second_loader AES XTS Decryption Key for Ernie SNVS sectors.
0x504 N 0x1800 0x1800 Y Y second_loader AES-128-CMAC Key for Ernie SNVS sectors.
0x505 N 0x1800 0x0000 N ? ? ?
0x506 N 0x1800 0x1800 Y N second_loader QAF Token AES-256-CBC and AES-256-CMAC key. Hardcoded in second_loader. Used with IV = keyring 0x507.
0x507 N 0x1800 0x1800 Y N second_loader QAF Token AES-256-CBC IV. Hardcoded in second_loader.
0x508 N 0x1800 0x1800 Y 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 N 0x1800 0x1800 Y Y second_loader ConsoleId of unit. Comes from IdStorage (eMMC).
0x50A N 0x1800 0x1800 Y Y second_loader QA flags. 0x10 bytes. Comes from Ernie NVS (Ernie command 0x1082).
0x50B N 0x1800 0x1800 Y Y second_loader Mgmt Data. 8 bytes. Comes from Ernie SNVS block 0 (Ernie command 0xD2).
0x50C N 0x1800 0x1800 Y N second_loader Second_Loader#Boot_type_indicator_for_slsk
0x50D N 0x1800 0x1800 Y Y second_loader OpenPSID of unit. Comes from IdStorage (eMMC).
0x50E N 0x1800 0x1800 Y Y second_loader Current firmware version. Comes from Ernie SNVS (Ernie command 0xD0).
0x50F N 0x1800 0x1800 Y Y second_loader Minimum firmware version. Comes from IdStorage SMI leaf (eMMC). 4 bytes.
0x510 N 0x1800 0x1800 Y Y second_loader DIP Switches. 0x20 bytes. Comes from CP and Ernie VS (Ernie command 0x90 offset 0xE0).
0x511 N 0x1800 0x1800 Y 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 (baryonVersion < 0x90903 && (ernieDLVersion & 0xffffff) < 0x3600) it is zeroed by second_loader. Part of SKSO data. Used by SK command 0xF01.
0x512 N 0x1800 0x1800 Y 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 SK command 0xF01.
0x513 N 0x1800 0x1800 Y Y second_loader DRAM size. Set to 0x20000000 by default, 0x40000000 on DevKit in DevKit Memory Size mode. Determined by DIP Switches (CP).
0x514 N 0x1800 0x1800 Y 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 SK command 0xF01.
0x515 N 0x1800 0x1800 Y 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 SK command 0xF01.
0x516 N 0x1800 0x1800 Y 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 SK command 0xF01: writes (u32)1 here after having exported the SKSO to paddr 0x4001FF00.
0x517 N 0x1800 0x1800 Y 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 SK command 0xF01.
0x518 N 0x1800 0x1800 Y Y second_loader Another current FW version (3.60+?). Comes from SNVS (Ernie command 0xD0).
0x519 N 0x1800 0x1800 Y Y? second_loader Part of SKSO data. Used by SK command 0xF01. Not used (maybe zeroed) on old FWs. Used on FW 3.60.
0x51A N 0x1800 0x1800 Y 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 SK command 0x1001.
0x51B N 0x1800 0x1800 Y Y second_loader Hardware Info. 4 bytes. Comes from Ernie Code Flash memory (Ernie command 5).
0x51C-0x51D N 0x1800 0x0000 N ? ? Used in update_service_sm for NVS. 4 bytes for each keyring.
0x51E-0x521 N 0x1800 0x0000 N ? ? Used in update_service_sm for NVS. 4 bytes for each keyring.
0x522-0x57F N 0x1800 0x0000 N ? ? ?
0x580-0x5FF X 0x0000 0x0000 X ? ? Not used.
0x600 Y 0x1000 0x1000 Y Y ? VisibleId of unit.
0x601 Y 0x1000 0x1000 Y Y ? ?
0x602 Y 0x1000 0x1000 Y Y ? 256 bits copied to 0xE0020100 by second_loader.
0x603 Y 0x1000 0x1000 Y N ? SLSK RSA public key has flags
0x604 Y 0x1000 0x1000 Y N ? ?
0x605-0x607 Y 0x1000 0x0000 Y ? ? ?
0x608-0x6FF X 0x0000 0x0000 X X ? Not used.
0x700-0x7FF Y 0x1000 0x0000 Y N ? 16 RSA public keys for SLSK files. Which key is used depends on public key revision specified in SLSK header.

Key rings flags on FW 3.60 after kernel boot time

KeyringId=0x000 Range=0x001 Flags=0x04420003
KeyringId=0x001 Range=0x001 Flags=0x04420001
KeyringId=0x002 Range=0x006 Flags=0x00400001
KeyringId=0x008 Range=0x001 Flags=0x00810003
KeyringId=0x009 Range=0x001 Flags=0x00800001
KeyringId=0x00A Range=0x006 Flags=0x00800003
KeyringId=0x010 Range=0x001 Flags=0x05020001
KeyringId=0x011 Range=0x00F Flags=0x01000001
KeyringId=0x020 Range=0x001 Flags=0x02000003
KeyringId=0x021 Range=0x004 Flags=0x061F0001
KeyringId=0x025 Range=0x00B Flags=0x02000001
KeyringId=0x030 Range=0x005 Flags=0x041F0001
KeyringId=0x035 Range=0x04B Flags=0x00000001
KeyringId=0x080 Range=0x080 Flags=0x00000000
KeyringId=0x100 Range=0x001 Flags=0x041F0001
KeyringId=0x101 Range=0x07F Flags=0x00000001
KeyringId=0x180 Range=0x080 Flags=0x00000000
KeyringId=0x200 Range=0x004 Flags=0x00000003
KeyringId=0x204 Range=0x002 Flags=0x006F0003
KeyringId=0x206 Range=0x008 Flags=0x00A00003
KeyringId=0x20E Range=0x002 Flags=0x00100003
KeyringId=0x210 Range=0x002 Flags=0x00000003
KeyringId=0x212 Range=0x002 Flags=0x001F0003
KeyringId=0x214 Range=0x002 Flags=0x00000003
KeyringId=0x216 Range=0x001 Flags=0x001F0003
KeyringId=0x217 Range=0x001 Flags=0x00000003
KeyringId=0x218 Range=0x0E8 Flags=0x00000000
KeyringId=0x300 Range=0x040 Flags=0x00000003
KeyringId=0x340 Range=0x001 Flags=0x012F0003
KeyringId=0x341 Range=0x003 Flags=0x01200003
KeyringId=0x344 Range=0x001 Flags=0x02200003
KeyringId=0x345 Range=0x004 Flags=0x022F0003
KeyringId=0x349 Range=0x00B Flags=0x02200003
KeyringId=0x354 Range=0x0AC Flags=0x00000003
KeyringId=0x400 Range=0x080 Flags=0x00000001
KeyringId=0x480 Range=0x080 Flags=0x00000000
KeyringId=0x500 Range=0x001 Flags=0x18000001
KeyringId=0x501 Range=0x001 Flags=0x10000007
KeyringId=0x502 Range=0x003 Flags=0x18000003
KeyringId=0x505 Range=0x001 Flags=0x00000001
KeyringId=0x506 Range=0x004 Flags=0x18000003
KeyringId=0x50A Range=0x001 Flags=0x18000007
KeyringId=0x50B Range=0x003 Flags=0x18000003
KeyringId=0x50E Range=0x001 Flags=0x10000003
KeyringId=0x50F Range=0x003 Flags=0x18000003
KeyringId=0x512 Range=0x001 Flags=0x18000007
KeyringId=0x513 Range=0x003 Flags=0x18000003
KeyringId=0x516 Range=0x001 Flags=0x18000007
KeyringId=0x517 Range=0x005 Flags=0x18000003
KeyringId=0x51C Range=0x064 Flags=0x00000001
KeyringId=0x580 Range=0x080 Flags=0x00000000
KeyringId=0x600 Range=0x005 Flags=0x10000003
KeyringId=0x605 Range=0x003 Flags=0x00000003
KeyringId=0x608 Range=0x0F8 Flags=0x00000000
KeyringId=0x700 Range=0x100 Flags=0x00000003
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