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tpm2_hash - performs a hash operation on a data buffer and returns the

tpm2_hash(8) tpm2.0-tools tpm2_hash(8)

NAME

tpm2_hash - performs a hash operation on a data buffer and returns the results. If the results of the hash will be used in a signing operation that uses a restricted signing key, then the ticket returned by this command can indicate that the hash is safe to sign.

SYNOPSIS

tpm2_hash[ COMMON OPTIONS ] [ TCTI OPTIONS ] [ --hierarchy|--halg| --infile|--outfile|--ticket| ]
performs a hash operation on a data buffer and returns the results. If the results of the hash will be used in a signing operation that uses a restricted signing key, then the ticket returned by this command can indicate that the hash is safe to sign.

DESCRIPTION

tpm2_hash performs a hash operation on a data buffer and returns the results. If the results of the hash will be used in a signing operation that uses a restricted signing key, then the ticket returned by this command can indicate that the hash is safe to sign.

OPTIONS

-H ,--hierarchy
hierarchy to use for the ticket e TPM_RH_ENDORSEMENT o TPM_RH_OWNER p TPM_RH_PLATFORM n TPM_RH_NULL
-g ,--halg
algorithm for the hash being computed 0x0004 TPM_ALG_SHA1 0x000B TPM_ALG_SHA256 0x000C TPM_ALG_SHA384 0x000D TPM_ALG_SHA512 0x0012 TPM_ALG_SM3_256
-I ,--infile
file containning the data to be hashed
-o ,--outfile
file record the hash result
-t ,--ticket
file record the ticket
[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_hash
tpm2_hash -H <e|o|p|n> -g 0x004 -I <inputFilename> -o <hashFilename> -t <ticketFilename>

DECEMBER 2016 Intel