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NAME
key2root - authenticate with a keyfile and run a process as the root user
SYNOPSIS
key2root [-k key-name] [-e] command [argument] ...
DESCRIPTION
The key2root utility takes a keyfile from the standard input and uses
it to authenticate the user, and if the keyfile is recognised, runs the
specified command with sanitised and updated environment variables and
with the keyfile as the standard input.
OPTIONS
The key2root utility conforms to the Base Definitions volume of
POSIX.1-2017, Section 12.2, Utility Syntax Guidelines.
The following option is supported:
-e Keep the environment variables as is. Neither sanitise nor
update them.
-k key-name
Check the input keyfile against a specific known key, rather
than checking against all known keys.
OPERANDS
The following operands are supported:
command
The command that shall be run with as the root user. This will
be both the process image and the process's zeroth command line
argument.
argument ...
Command line arguments for the command to run.
STDIN
The key2root utility uses the standard input as the authentication key
and forwards it to the command it runs upon successful authentication.
RATIONALE
key2root is useful for scripts that require both root access and a
keyfile: it lets the user write a script that can decrypt a keyfile
and the successful keyfile decryption to testify that the user has
authenticated himself rather also requiring his password.
SEE ALSO
key2root-addkey(8), key2root-lskeys(8), key2root-rmkey(8), asroot(8),
sudo(8), doas(1), su(1)
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