NAME

       tss2_sign(1) -

SYNOPSIS

       tss2_sign [OPTIONS]

SEE ALSO

       fapi-config(5)  to  adjust Fapi parameters like the used cryptographic profile and TCTI or
       directories for the Fapi metadata storages.

       fapi-profile(5) 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.

DESCRIPTION

       tss2_sign(1) - This command uses a key inside the TPM to sign a digest value using the TPM
       signing schemes as specified in the cryptographic profile (cf., fapi-profile(5)).

OPTIONS

       These are the available options:

       • -p, --keyPath=STRING:

         The path to the signing key.

       • -s, --padding=STRING:

         The  padding  scheme used.  Possible values are “RSA_SSA”, “RSA_PSS” (case insensitive).
         Optional parameter.  If omitted, the default  padding  specified  in  the  cryptographic
         profile (cf., fapi-profile(5)) is used.

       • -c, --certificate=FILENAME or - (for stdout):

         The certificate associated with keyPath in PEM format.  Optional parameter.

       • -d, --digest=FILENAME or - (for stdin):

         The data to be signed, already hashed.

       • -f, --force:

         Force overwriting the output file.

       • -k, --publicKey=FILENAME or - (for stdout):

         The public key associated with keyPath in PEM format.  Optional parameter.

       • -o, --signature=FILENAME or - (for stdout):

         Returns the signature in binary form.

COMMON OPTIONS

       This  collection  of  options are common to all tss2 programs and provide information that
       many users may expect.

       • -h, --help [man|no-man]: 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.

         To successfully use the manpages feature requires the manpages to  be  installed  or  on
         MANPATH, See man(1) for more details.

       • -v, --version: Display version information for this tool, supported tctis and exit.

EXAMPLE

              tss2_sign --keyPath=HS/SRK/myRSASign --padding="RSA_PSS" --digest=digest.file --signature=signature.file --publicKey=publicKey.file

RETURNS

       0 on success or 1 on failure.

BUGS

       Github Issues (https://github.com/tpm2-software/tpm2-tools/issues)

HELP

       See the Mailing List (https://lists.linuxfoundation.org/mailman/listinfo/tpm2)