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.TH "tss2_verifysignature" "1" "APRIL 2019" "tpm2\-tools" "General Commands Manual"
.SH NAME
\f[B]tss2_verifysignature\f[R](1) \-
.SH SYNOPSIS
\f[B]tss2_verifysignature\f[R] [\f[I]OPTIONS\f[R]]
.SH DESCRIPTION
\f[B]tss2_verifysignature\f[R](1) \- This command verifies a signature
using a public key found in the passed key path.
The used signature verification scheme is specified in the cryptographic
profile (cf., \f[B]fapi\-profile(5)\f[R]).
.SH OPTIONS
These are the available options:
.IP \[bu] 2
\f[B]\-d\f[R], \f[B]\-\-digest\f[R]=\f[I]FILENAME\f[R] or \f[I]\-\f[R]
(for stdin):
.RS 2
.PP
The data that was signed, already hashed according to the cryptographic
profile (cf., \f[B]fapi\-profile(5)\f[R]).
.RE
.IP \[bu] 2
\f[B]\-p\f[R], \f[B]\-\-keyPath\f[R]=\f[I]STRING\f[R]:
.RS 2
.PP
Path to the verification public key.
.RE
.IP \[bu] 2
\f[B]\-i\f[R], \f[B]\-\-signature\f[R]=\f[I]FILENAME\f[R] or
\f[I]\-\f[R] (for stdin):
.RS 2
.PP
The signature to be verified.
.RE
.SH COMMON OPTIONS
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[R], \f[B]\-\-help [man|no\-man]\f[R]: 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 \[lq]man\[rq] option argument is
specified, however if explicit \[lq]man\[rq] is requested, the tool will
provide errors from man on stderr.
If the \[lq]no\-man\[rq] 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[R], See \f[B]man\f[R](1) for more
details.
.RE
.IP \[bu] 2
\f[B]\-v\f[R], \f[B]\-\-version\f[R]: Display version information for
this tool, supported tctis and exit.
.SH EXAMPLE
.IP
.EX
tss2_verifysignature \-\-keyPath=ext/myRSASign \-\-digest=digest.file \-\-signature=signature.file
.EE
.SH RETURNS
0 on success or 1 on failure.
.SH BUGS
\c
.UR https://github.com/tpm2-software/tpm2-tools/issues
Github Issues
.UE \c
.SH HELP
See the \c
.UR https://lists.linuxfoundation.org/mailman/listinfo/tpm2
Mailing List
.UE \c