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 pa‐
       rameters 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 para‐
         meter.  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)

tpm2-tools                                         APRIL 2019                                       tss2_sign(1)