NAME

       clevis-luks-regen - Regenerates a clevis binding

SYNOPSIS

       clevis luks regen [-q] -d DEV -s SLT

OVERVIEW

       The clevis luks regen command regenerates the clevis binding for a given slot in a LUKS
       device, using the same configuration of the existing binding. Its operation can be
       compared to performing clevis luks unbind and clevis luks bind for rebinding said slot and
       device. This is useful when rotating tang keys.

OPTIONS

       •   -d DEV : The bound LUKS device

       •   -s SLT : The slot or key slot number for rebinding. Note that it requires that such
           slot is currently bound by clevis.

       •   -q: Do not prompt for confirmation.

EXAMPLE

           Let's start by using clevis luks list to see the current binding configuration in /dev/sda1:

           # clevis luks list -d /dev/sda1
           1: tang '{"url":"http://tang.server"}'
           2: tpm2 '{"hash":"sha256","key":"ecc"}'

           We see that slot 1 in /dev/sda1 has a tang binding with the following configuration:
           '{"url":"http://tang.server"}'

           Now let's do the rebinding of slot 1:
           # clevis luks regen -d /dev/sda1 -s 1

           After a successful operation, we will have the new binding using the same configuration that was already in place.

SEE ALSO

       clevis-luks-list(1) <clevis-luks-list.1.adoc> clevis-luks-bind(1)
       <clevis-luks-bind.1.adoc> clevis-luks-unbind(1) <clevis-luks-unbind.1.adoc>

                                                                             CLEVIS-LUKS-REGEN(1)