NAME¶

tpm2_certify - prove that an object with a specific Name is loaded in the TPM. By certifying that the object is loaded, the TPM warrants that a public area with a given Name is self-consistent and associated with a valid sensitive area. If a relying party has a public area that has the same Name as a Name certified with this command, then the values in that public area are correct. The object may be any object that is loaded with TPM2_Load() or TPM2_CreatePrimary(). An object that only has its public area loaded cannot be certified.

SYNOPSIS¶

tpm2_certify[ COMMON OPTIONS ] [ TCTI OPTIONS ] [ --objHandle|--objContext|--keyHandle|--keyContext|--pwdo|--pwdk|--halg|--attestFile|--sigFile|--passwdInHex| ]

prove that an object with a specific Name is loaded in the TPM. By certifying that the object is loaded, the TPM warrants that a public area with a given Name is self-consistent and associated with a valid sensitive area. If a relying party has a public area that has the same Name as a Name certified with this command, then the values in that public area are correct. The object may be any object that is loaded with TPM2_Load() or TPM2_CreatePrimary(). An object that only has its public area loaded cannot be certified.

DESCRIPTION¶

tpm2_certify prove that an object with a specific Name is loaded in the TPM. By certifying that the object is loaded, the TPM warrants that a public area with a given Name is self-consistent and associated with a valid sensitive area. If a relying party has a public area that has the same Name as a Name certified with this command, then the values in that public area are correct. The object may be any object that is loaded with TPM2_Load() or TPM2_CreatePrimary(). An object that only has its public area loaded cannot be certified.

OPTIONS¶

-H ,--objHandle

handle of the object to be certified

-C ,--objContext

filename of the object context to be certified

-k ,--keyHandle

handle of the key used to sign the attestation structure

-c ,--keyContext

filename of the key context used to sign the attestation structure

-P ,--pwdo

the object handle's password, optional

-K ,--pwdk

the keyHandle's password, optional

-g ,--halg

the hash algorithm used to digest the message 0x0004 TPM_ALG_SHA1 0x000B TPM_ALG_SHA256 0x000C TPM_ALG_SHA384 0x000D TPM_ALG_SHA512 0x0012 TPM_ALG_SM3_256

-a ,--attestFile

output file name, record the attestation structure

-s ,--sigFile

output file name, record the signature structure

-X ,--passwdInHex

passwords given by any options are hex format.

[COMMON OPTIONS ]

This collection of options are common to many programs and provide information that many users may expect.

-h, --help

Display a manual describing the tool and its usage.

-v, --version

Display version information for this tool.

-V, --verbose

Increase the information that the tool prints to the console during its execution.

[TCTI OPTIONS ]

This collection of options are used to configure the varous TCTI modules available.

-T, --tcti

Select the TCTI used for communication with the next component down the TSS stack. In most configurations this will be the TPM but it could be a simulator or proxy. Supported TCTIs are or “device” or “socket” .

-d, --device-file

Specify the TPM device file for use by the device TCTI. The default is /dev/tpm0.

-R, --socket-address

Specify the domain name or IP address used by the socket TCTI. The default is 127.0.0.1.

-p, --socket-port

Specify the port number used by the socket TCTI. The default is 2321.

ENVIRONMENT: TCTI

This collection of environment variables that may be used to configure the varous TCTI modules available. The values passed through these variables can be overridden on a per-command basis using the available command line options.

TPM2TOOLS_TCTI_NAME

Select the TCTI used for communication with the next component down the TSS stack. In most configurations this will be the TPM but it could be a simulator or proxy. See 'OPTIONS' section for the names of supported TCTIs.

TPM2TOOLS_DEVICE_FILE

Specify the TPM device file for use by the device TCTI.

TPM2TOOLS_SOCKET_ADDRESS

Specify the domain name or IP address used by the socket TCTI.

TPM2TOOLS_SOCKET_PORT

Specify the port number used by the socket TCTI.

EXAMPLES¶

tpm2_certify

tpm2_certify -H 0x81010002 -k 0x81010001 -P 0x0011 -K 0x00FF -g 0x00B -a <fileName> -s <fileName>
tpm2_certify -C obj.context -c key.context -P 0x0011 -K 0x00FF -g 0x00B -a <fileName> -s <fileName>
tpm2_certify -H 0x81010002 -k 0x81010001 -P 0011 -K 00FF -X -g 0x00B -a <fileName> -s <fileName>