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.TH "tss2_verifyquote" "1" "APRIL 2019" "tpm2\-tools" "General Commands Manual"
.hy
.SH NAME
.PP
\f[B]tss2_verifyquote\f[](1) \-
.SH SYNOPSIS
.PP
\f[B]tss2_verifyquote\f[] [\f[I]OPTIONS\f[]]
.SH SEE ALSO
.PP
\f[B]fapi\-config(5)\f[] to adjust Fapi parameters like the used
cryptographic profile and TCTI or directories for the Fapi metadata
storages.
.PP
\f[B]fapi\-profile(5)\f[] to determine the cryptographic algorithms and
parameters for all keys and operations of a specific TPM interaction
like the name hash algorithm, the asymmetric signature algorithm, scheme
and parameters and PCR bank selection.
.SH DESCRIPTION
.PP
\f[B]tss2_verifyquote\f[](1) \- This command verifies that the data
returned by a quote is valid.
This includes
.IP \[bu] 2
Reconstructing the quoteInfo\[aq]s PCR values from the eventLog (if an
eventLog was provided)
.IP \[bu] 2
Verifying the quoteInfo using the signature and the publicKeyPath
.PP
The used signature verification scheme is specified in the cryptographic
profile (cf., \f[B]fapi\-profile(5)\f[]).
.PP
An application using tss2_verifyquote() will further have to
.IP \[bu] 2
Assess the publicKey\[aq]s trustworthiness
.IP \[bu] 2
Assess the eventLog entries\[aq] trustworthiness
.SH OPTIONS
.PP
These are the available options:
.IP \[bu] 2
\f[B]\-Q\f[], \f[B]\-\-qualifyingData\f[]=\f[I]FILENAME\f[] or
\f[I]\-\f[] (for stdin):
.RS 2
.PP
A nonce provided by the caller to ensure freshness of the signature.
Optional parameter.
.RE
.IP \[bu] 2
\f[B]\-l\f[], \f[B]\-\-pcrLog\f[]=\f[I]FILENAME\f[] or \f[I]\-\f[] (for
stdin):
.RS 2
.PP
Returns the PCR event log for the chosen PCR.
Optional parameter.
.PP
PCR event logs are a list (arbitrary length JSON array) of log entries
with the following content.
.IP
.nf
\f[C]
\-\ recnum:\ Unique\ record\ number
\-\ pcr:\ PCR\ index
\-\ digest:\ The\ digests
\-\ type:\ The\ type\ of\ event.\ At\ the\ moment\ the\ only\ possible\ value\ is:\ "LINUX_IMA"\ (legacy\ IMA)
\-\ eventDigest:\ Digest\ of\ the\ event;\ e.g.\ the\ digest\ of\ the\ measured\ file
\-\ eventName:\ Name\ of\ the\ event;\ e.g.\ the\ name\ of\ the\ measured\ file.
\f[]
.fi
.RE
.IP \[bu] 2
\f[B]\-q\f[], \f[B]\-\-quoteInfo\f[]=\f[I]FILENAME\f[] or \f[I]\-\f[]
(for stdin):
.RS 2
.PP
The JSON\-encoded structure holding the inputs to the quote operation.
This includes the digest value and PCR values.
.RE
.IP \[bu] 2
\f[B]\-k\f[], \f[B]\-\-publicKeyPath\f[]=\f[I]STRING\f[]:
.RS 2
.PP
Identifies the signing key.
MAY be a path to the public key hierarchy /ext.
.RE
.IP \[bu] 2
\f[B]\-i\f[], \f[B]\-\-signature\f[]=\f[I]FILENAME\f[] or \f[I]\-\f[]
(for stdin):
.RS 2
.PP
The signature over the quoted material.
.RE
.SH COMMON OPTIONS
.PP
This collection of options are common to all tss2 programs and provide
information that many users may expect.
.IP \[bu] 2
\f[B]\-h\f[], \f[B]\-\-help [man|no\-man]\f[]: Display the tools
manpage.
By default, it attempts to invoke the manpager for the tool, however, on
failure will output a short tool summary.
This is the same behavior if the "man" option argument is specified,
however if explicit "man" is requested, the tool will provide errors
from man on stderr.
If the "no\-man" option if specified, or the manpager fails, the short
options will be output to stdout.
.RS 2
.PP
To successfully use the manpages feature requires the manpages to be
installed or on \f[I]MANPATH\f[], See \f[B]man\f[](1) for more details.
.RE
.IP \[bu] 2
\f[B]\-v\f[], \f[B]\-\-version\f[]: Display version information for this
tool, supported tctis and exit.
.SH EXAMPLE
.IP
.nf
\f[C]
\ \ \ \ tss2_verifyquote\ \-\-publicKeyPath="ext/myNewParent"\ \-\-qualifyingData=qualifyingData.file\ \-\-quoteInfo=quoteInfo.file\ \-\-signature=signature.file\ \-\-pcrLog=pcrLog.file
\f[]
.fi
.SH RETURNS
.PP
0 on success or 1 on failure.
.SH BUGS
.PP
Github Issues (https://github.com/tpm2-software/tpm2-tools/issues)
.SH HELP
.PP
See the Mailing List (https://lists.01.org/mailman/listinfo/tpm2)