ConnectX-9 Measurements | Device Attestation and CoRIM-based Reference Measurement Sharing

The measurement specification for all the indexes listed in the table below is: 0x01 (DMTF).

The CoRIM files include the same measurement block definition encoded in base64 format, as outlined below. If the table indicates "Yes" under the "Part of CoRIM" column, the index is included in the CoRIM file; otherwise, it is excluded.

Version 1.3.0

Index	Measurement	Value	Description	What is measured?	Part of CoRIM
1	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Interpret as Semver2.0 (https://semver.org/ ). Byte 3: Major Version Byte 2-1: Minor Version Byte 0: is patch	Yes
1	DMTFSpecMeasurementValueSize	4	4-byte unsigned Integer, little endian		Yes
2	DMTFSpecMeasurementValueType	0x01	Hash, mutable FW	Hash of PSC FW	Yes
2	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of PSC FW	Yes
3	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of OEM Platform FW Configuration	Yes
3	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of OEM Platform FW Configuration	Yes
4	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of OEM NIC FW Configuration	Yes
4	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of OEM NIC FW Configuration	Yes
5	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of NVIDIA Platform FW Configuration	Yes
5	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of NVIDIA Platform FW Configuration	Yes
6	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of NVIDIA NIC FW Configuration	Yes
6	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of NVIDIA NIC FW Configuration	Yes
7	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Platform mutable FW version number	Yes
7	DMTFSpecMeasurementValueSize	9	9 bytes, unsigned Integer, little endian	Platform mutable FW version number	Yes
8	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	NIC mutable FW version number	Yes
8	DMTFSpecMeasurementValueSize	3	3 bytes, unsigned Integer, little endian	NIC mutable FW version number	Yes
9	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Platform mutable FW security version number	Yes
9	DMTFSpecMeasurementValueSize	3	3 bytes, unsigned Integer, little endian	Platform mutable FW security version number	Yes
10	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	NIC mutable FW security version number	Yes
10	DMTFSpecMeasurementValueSize	1	1 byte, unsigned Integer, little endian	NIC mutable FW security version number	Yes
11	DMTFSpecMeasurementValueType	0x01	Hash, mutable FW	Hash of NIC FW	Yes
11	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of NIC FW	Yes
12	DMTFSpecMeasurementValueType	0x02	Hash, HW configuration	Hash of hardware configuration	No
12	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of hardware configuration	No
13	DMTFSpecMeasurementValueType	0x02	Hash, HW configuration	Hash of instance-based hardware configuration	No
13	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of instance-based hardware configuration	No
14	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Debug tokens status: Device Runtime Status (32-bit) Bit 0-1: Runtime token (customer support) Bit 2-3: Debug FW Token Bit 4-5: FRC token Bit 6-31: reserved Each pair consists of: Bit 0: Runtime Token Applied Since Last Reset (1 bit) Bit 1: Runtime Token Currently In Use (1 bit)	Yes, reported with all bits clear.
14	DMTFSpecMeasurementValueSize	4	32-bit, unsigned integer, little endian		Yes, reported with all bits clear.
15	DMTFSpecMeasurementValueType	0x81	Raw bitstream (mutable FW)	FWID-0; This should be the same as TCG-OID extension in L5 certificate	Yes
15	DMTFSpecMeasurementValueSize	48	Raw bitstream of SHA-384 hash		Yes
16	DMTFSpecMeasurementValueType	0x81	Raw bitstream (mutable FW)	FWID-1; This should be the same as TCG-OID extension in L6 certificate	Yes
16	DMTFSpecMeasurementValueSize	48	Raw bitstream of SHA-384 hash		Yes
17	DMTFSpecMeasurementValueType	0x81	Raw bitstream (Device Identifier)	Device identifier (DID, VID, SVID, SID) as defined by PCISIG and a vendor defined byte. Byte 1:2 - Vendor ID Byte 3:4 - Device ID Byte 5:6 - Subsystem Vendor ID Byte 7:8 - Subsystem ID Byte 9 - Vendor defined byte All multi-byte fields are little endian (uint16_t)	Yes (also in CoMID tag-id);
17	DMTFSpecMeasurementValueSize	9	Raw bitstream		Yes (also in CoMID tag-id);
18	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Minimum FW security version numbers (min-SVN). Byte 2: NIC Byte 1: PSC FW Byte 0: PSC bootloader	No
18	DMTFSpecMeasurementValueSize	3	3 bytes, unsigned Integer, little endian		No
19	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
19	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
20	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
20	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
21	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
21	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
22	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
22	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
23	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
23	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
24	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
24	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
25	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
25	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
26	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
26	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
27	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
27	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
28	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
28	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
29	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
29	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
30	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
30	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
31	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
31	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
32	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
32	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
33	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
33	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
34	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
34	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
35	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
35	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
36	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
36	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
37	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
37	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
38	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
38	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
39	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
39	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
40	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
40	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
41	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
41	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
42	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
42	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
43	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
43	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
44	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
44	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
45	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
45	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
46	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
46	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
47	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
47	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
48	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
48	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
49	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
49	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
50	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW Configuration	Debug Token Configuration: Byte 91-60: nonce (32B) Byte 59-57: reserved Byte 56-52: FW version Byte 51-36: PSID Byte 35-28: device unique identifier (ECID 64 msb) Byte 27-12: Keypair UUID Byte 11: status Byte 10: reserved (was token opcode) Byte 9-8: device type identifier Byte 7-6: struct size Byte 5: struct major version Byte 4: struct minor version Byte 3-0: tools magic pattern	No
50	DMTFSpecMeasurementValueSize	92	Raw bitstream		No
51	DMTFSpecMeasurementValueType	0x81	Raw bitstream (Device Identifier)	PLDM device identifiers: The format of data is based on the PLDM QueryDeviceIdentifiers response, but might not be identical to it as this index has a fixed list of descriptors with a fixed ordering. Byte 0: 0x0 (Completion Code) Bytes 1-4: Total length of descriptors in bytes starting at byte 6 Byte 5: Total number of descriptors Bytes 6-N: List of device descriptors The list of device descriptors includes: PCI Vendor ID PCI Device ID PCI Subsystem Vendor ID PCI Subsystem ID If APSKU present on the device: Vendor defined block with content: APSKU All multi-byte fields are little endian.	Yes
51	DMTFSpecMeasurementValueSize		Raw bitstream		Yes

Reserved indexes 19–49 (reported as 0xFF) are exclusive to SPDM 1.1 and are no longer reported in SPDM 1.2 and later versions.

Version 1.2.0

Index	Measurement	Value	Description	What is measured?	Part of CoRIM
1	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Interpret as Semver2.0 (https://semver.org/ ). Byte 3: Major Version Byte 2-1: Minor Version Byte 0: is patch	Yes
1	DMTFSpecMeasurementValueSize	4	4-byte unsigned Integer, little endian		Yes
2	DMTFSpecMeasurementValueType	0x01	Hash, mutable FW	Hash of PSC FW	Yes
2	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of PSC FW	Yes
3	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of OEM Platform FW Configuration	Yes
3	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of OEM Platform FW Configuration	Yes
4	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of OEM NIC FW Configuration	Yes
4	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of OEM NIC FW Configuration	Yes
5	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of NVIDIA Platform FW Configuration	Yes
5	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of NVIDIA Platform FW Configuration	Yes
6	DMTFSpecMeasurementValueType	0x03	Hash, FW configuration	Hash of NVIDIA NIC FW Configuration	Yes
	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of NVIDIA NIC FW Configuration	Yes
7	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Platform mutable FW version number	Yes
7	DMTFSpecMeasurementValueSize	9	9 bytes, unsigned Integer, little endian	Platform mutable FW version number	Yes
8	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	NIC mutable FW version number	Yes
8	DMTFSpecMeasurementValueSize	3	3 bytes, unsigned Integer, little endian	NIC mutable FW version number	Yes
9	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Platform mutable FW security version number	Yes
9	DMTFSpecMeasurementValueSize	3	3 bytes, unsigned Integer, little endian	Platform mutable FW security version number	Yes
10	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	NIC mutable FW security version number	Yes
10	DMTFSpecMeasurementValueSize	1	1 byte, unsigned Integer, little endian	NIC mutable FW security version number	Yes
11	DMTFSpecMeasurementValueType	0x01	Hash, mutable FW	Hash of NIC FW	Yes
11	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of NIC FW	Yes
12	DMTFSpecMeasurementValueType	0x02	Hash, HW configuration	Hash of hardware configuration	No
12	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of hardware configuration	No
13	DMTFSpecMeasurementValueType	0x02	Hash, HW configuration	Hash of instance-based hardware configuration	No
13	DMTFSpecMeasurementValueSize	64	SHA2-512 hash	Hash of instance-based hardware configuration	No
14	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW configuration	Debug tokens status: Device Runtime Status (32-bit) Bit 0-1: Runtime token (customer support) Bit 2-3: Debug FW Token Bit 4-5: FRC token Bit 6-31: reserved Each pair consists of: Bit 0: Runtime Token Applied Since Last Reset (1 bit) Bit 1: Runtime Token Currently In Use (1 bit)	Yes, reported with all bits clear.
14	DMTFSpecMeasurementValueSize	4	32-bit, unsigned integer, little endian		Yes, reported with all bits clear.
15	DMTFSpecMeasurementValueType	0x81	Raw bitstream (mutable FW)	FWID-0; This should be the same as TCG-OID extension in L5 certificate	Yes
15	DMTFSpecMeasurementValueSize	48	Raw bitstream of SHA-384 hash		Yes
16	DMTFSpecMeasurementValueType	0x81	Raw bitstream (mutable FW)	FWID-1; This should be the same as TCG-OID extension in L6 certificate	Yes
16	DMTFSpecMeasurementValueSize	48	Raw bitstream of SHA-384 hash		Yes
17	DMTFSpecMeasurementValueType	0x81	Raw bitstream (Device Identifier)	Device identifier (DID, VID, SVID, SID) as defined by PCISIG and a vendor defined byte. Byte 1:2 - Vendor ID Byte 3:4 - Device ID Byte 5:6 - Subsystem Vendor ID Byte 7:8 - Subsystem ID Byte 9 - Vendor defined byte All multi-byte fields are little endian (uint16_t)	Yes (also in CoMID tag-id);
17	DMTFSpecMeasurementValueSize	9	Raw bitstream		Yes (also in CoMID tag-id);
18	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
18	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
19	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
19	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
20	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
20	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
21	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
21	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
22	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
22	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
23	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
23	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
24	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
24	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
25	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
25	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
26	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
26	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
27	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
27	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
28	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
28	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
29	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
29	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
30	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
30	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
31	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
31	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
32	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
32	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
33	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
33	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
34	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
34	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
35	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
35	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
36	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
36	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
37	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
37	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
38	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
38	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
39	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
39	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
40	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
40	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
41	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
41	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
42	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
42	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
43	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
43	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
44	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
44	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
45	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
45	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
46	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
46	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
47	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
47	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
48	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
48	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
49	DMTFSpecMeasurementValueType	0x81	Raw bitstream, HW Configuration	Reserved. Reported as 0xFF	No
49	DMTFSpecMeasurementValueSize	1	Raw bitstream	Reserved. Reported as 0xFF	No
50	DMTFSpecMeasurementValueType	0x83	Raw bitstream, FW Configuration	Debug Token Configuration: Byte 91-60: nonce (32B) Byte 59-57: reserved Byte 56-52: FW version Byte 51-36: PSID Byte 35-28: device unique identifier (ECID 64 msb) Byte 27-12: Keypair UUID Byte 11: status Byte 10: reserved (was token opcode) Byte 9-8: device type identifier Byte 7-6: struct size Byte 5: struct major version Byte 4: struct minor version Byte 3-0: tools magic pattern	No
50	DMTFSpecMeasurementValueSize	92	Raw bitstream		No
51	DMTFSpecMeasurementValueType	0x81	Raw bitstream (Device Identifier)	PLDM device identifiers: The format of data is based on the PLDM QueryDeviceIdentifiers response, but might not be identical to it as this index has a fixed list of descriptors with a fixed ordering. Byte 0: 0x0 (Completion Code) Bytes 1-4: Total length of descriptors in bytes starting at byte 6 Byte 5: Total number of descriptors Bytes 6-N: List of device descriptors The list of device descriptors includes: PCI Vendor ID PCI Device ID PCI Subsystem Vendor ID PCI Subsystem ID If APSKU present on the device: Vendor defined block with content: APSKU All multi-byte fields are little endian.	Yes

Reserved indexes 18–49 (reported as 0xFF) are exclusive to SPDM 1.1 and are no longer reported in SPDM 1.2 and later versions.

Last updated: August 04, 2026