NAME

       tss2_createseal(1) -

SYNOPSIS

       tss2_createseal [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_createseal(1) - This command creates a sealed object and stores it in the FAPI metadata  store.   If
       no data is provided (i.e. a NULL-pointer) then the TPM generates random data and fills the sealed object.
       TPM signing schemes are used as specified in the cryptographic profile (cf., fapi-profile(5)).

OPTIONS

       These are the available options:

       • -p, --path=STRING:

         The path to the new key.

       • -t, --type=STRING:

         Identifies the intended usage.  Optional parameter.  Types may be any comma-separated combination of:

                - "exportable": Clears the fixedTPM and fixedParent attributes of a key or
                  sealed object.
                - "noda": Sets the noda attribute of a key or NV index.
                - "system": Stores the data blobs and metadata for a created key or seal
                  in the system-wide directory instead of user's personal directory.
                - A hexadecimal number (e.g. "0x81000001"): Marks a key object to be
                  made persistent and sets the persistent object handle to this value.

       • -P, --policyPath=STRING:

         Identifies the policy to be associated with the new key.  Optional parameter.  If omitted then no poli‐
         cy will be associated with the key.

         A  policyPath  is composed of two elements, separated by “/”.  A policyPath starts with “/policy”.  The
         second path element identifies the policy or policy template using a meaningful name.

       • -a, --authValue=STRING:

         The new UTF-8 password.  Optional parameter.  If it is neglected then the user is queried interactively
         for a password.  To set no password, this option should be used with the empty string (““).  The  maxi‐
         mum  password  size  is  determined by the digest size of the chosen name hash algorithm in the crypto‐
         graphic profile (cf., fapi-profile(5)).  For example, choosing SHA256 as hash algorithm,  allows  pass‐
         words of a maximum size of 32 characters.

       • -i, --data=FILENAME or - (for stdin):

         The data to be sealed by the TPM.  Optional parameter.  Must not be used together with --size.

       • -s, --size=INTEGER:

         Determines  the number of random bytes the TPM should generate and seal.  Optional parameter.  Must not
         be “0”.  Must no be used together with --data.

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

   Create a key with password “abc” and read sealing data from file.
              tss2_createseal --path=HS/SRK/mySealKey --type="noDa" --authValue=abc --data=data.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_createseal(1)