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tpm2_verifysignature(8) tpm2.0-tools tpm2_verifysignature(8)

NAME

tpm2_verifysignature - uses loaded keys to validate a signature on a message with the message digest passed to the TPM. If the signature check succeeds, then the TPM will produce a TPMT_TK_VERIFIED. Otherwise, the TPM shall return TPM_RC_SIGNATURE. If keyHandle references an asymmetric key, only the public portion of the key needs to be loaded. If keyHandle references a symmetric key, both the public and private portions need to be loaded.

SYNOPSIS

tpm2_verifysignature[ COMMON OPTIONS ] [ TCTI OPTIONS ] [ --keyHandle|--keyContext|--halg|--msg|--digest|--sig|--raw|--ticket| ]

uses loaded keys to validate a signature on a message with the message digest passed to the TPM. If the signature check succeeds, then the TPM will produce a TPMT_TK_VERIFIED. Otherwise, the TPM shall return TPM_RC_SIGNATURE. If keyHandle references an asymmetric key, only the public portion of the key needs to be loaded. If keyHandle references a symmetric key, both the public and private portions need to be loaded.

DESCRIPTION

tpm2_verifysignature uses loaded keys to validate a signature on a message with the message digest passed to the TPM. If the signature check succeeds, then the TPM will produce a TPMT_TK_VERIFIED. Otherwise, the TPM shall return TPM_RC_SIGNATURE. If keyHandle references an asymmetric key, only the public portion of the key needs to be loaded. If keyHandle references a symmetric key, both the public and private portions need to be loaded.

OPTIONS

handle of public key that will be used in the validation
filename of the key context used for the operation
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
the input message file, containning the content to be digested
the input hash file, containning the hash of the message. If this argument been chosed, the argument '-m(--msg)' and '-g(--halg)' is no need
the input signature file, containning the signature to be tested
set the input signature file to raw type, default TPMT_SIGNATURE, optional
the ticket file, record the validation structure
[COMMON OPTIONS ]
This collection of options are common to many programs and provide information that many users may expect.
Display a manual describing the tool and its usage.
Display version information for this tool.
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.
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” .
Specify the TPM device file for use by the device TCTI. The default is /dev/tpm0.

Specify the domain name or IP address used by the socket TCTI. The default is 127.0.0.1.
Specify the port number used by the socket TCTI. The default is 2321.
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.
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.
Specify the TPM device file for use by the device TCTI.

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

EXAMPLES

tpm2_verifysignature

tpm2_verifysignature -k 0x81010001 -g 0x000B -m <filePath> -s <filePath> -t <filePath>
tpm2_verifysignature -k 0x81010001 -D <filePath> -s <filePath> -t <filePath>
tpm2_verifysignature -c key.context -g 0x000B -m <filePath> -s <filePath> -t <filePath>







  

    DECEMBER 2016
    Intel