\" $NetBSD: veriexecgen.8,v 1.22 2019/07/31 21:50:25 wiz Exp $
\"
\" Copyright (c) 2006 The NetBSD Foundation, Inc.
\" All rights reserved.
\"
\" This code is derived from software contributed to The NetBSD Foundation
\" by Matt Fleming.
\"
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\" modification, are permitted provided that the following conditions
\" are met:
\" 1. Redistributions of source code must retain the above copyright
\"    notice, this list of conditions and the following disclaimer.
\" 2. Redistributions in binary form must reproduce the above copyright
\"    notice, this list of conditions and the following disclaimer in the
\"    documentation and/or other materials provided with the distribution.
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\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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Dd July 31, 2019
Dt VERIEXECGEN 8
Os
Sh NAME
Nm veriexecgen
Nd generate fingerprints for Veriexec
Sh SYNOPSIS
Nm
Op Fl AaDrSTvW
Op Fl d Pa dir
Op Fl f Pa file
Op Fl o Pa fingerprintdb
Op Fl p Pa prefix
Op Fl t Ar algorithm
Nm
Op Fl h
Sh DESCRIPTION
Nm
can be used to create a fingerprint database for use with
Em Veriexec .
Pp
If no command line arguments were specified,
Nm
will resort to default operation, implying
Fl D Fl o Ar /etc/signatures Fl t Ar sha256 .
Pp
If the output file already exists,
Nm
will save a backup copy in the same file only with a
Dq .old
suffix.
Pp
The following options are available:
Bl -tag -width ".Fl p Ar prefix"
It Fl A
Append to the output file, don't overwrite it.
It Fl a
Add fingerprints for non-executable files as well.
It Fl D
Search system directories,
Pa /bin ,
Pa /sbin ,
Pa /usr/bin ,
Pa /usr/sbin ,
Pa /lib ,
Pa /usr/lib ,
Pa /libexec ,
and
Pa /usr/libexec .
It Fl d Ar dir
Scan for files in
Ar dir .
Multiple uses of this flag can specify more than one directory.
\" .It Fl F
\" Try to guess the correct flags for every file.
It Fl f Ar file
Read files from
Ar file ,
or if
Ar file
is "-" read from
Ar stdin .
It Fl h
Display the help screen.
It Fl o Ar fingerprintdb
Save the generated fingerprint database to
Ar fingerprintdb .
It Fl p Ar prefix
When storing files in the fingerprint database,
store the full pathnames of files with the leading
Dq prefix
of the filenames removed.
It Fl r
Scan recursively.
It Fl S
Set the immutable flag on the created signatures file when done writing it.
It Fl T
Put a timestamp on the generated file.
It Fl t Ar algorithm
Use
Ar algorithm
for the fingerprints.
Must be one of
Dq sha256 ,
Dq sha384 ,
or
Dq sha512 .
It Fl v
Verbose mode.
Print messages describing what operations are being done.
It Fl W
By default,
Nm
will exit when an error condition is encountered.
This option will
treat errors such as not being able to follow a symbolic link,
not being able to find the real path for a directory entry, or
not being able to calculate a hash of an entry as a warning,
rather than an error.
If errors are treated as warnings,
Nm
will continue processing.
The default behaviour is to treat errors as fatal.
El
Sh FILES
Pa /etc/signatures
Sh EXAMPLES
Fingerprint files in the common system directories using the default hashing
algorithm
Dq sha256
and save to the default fingerprint database in
Pa /etc/signatures :
Bd -literal -offset indent
# veriexecgen
Ed
Pp
Fingerprint files in
Pa /etc ,
appending to the default fingerprint database:
Bd -literal -offset indent
# veriexecgen -A -a -d /etc
Ed
Pp
Fingerprint files in
Pa /path/to/somewhere using
Dq sha512
as the hashing algorithm, saving to
Pa /etc/somewhere.fp :
Bd -literal -offset indent
# veriexecgen -d /path/to/somewhere -t sha512 -o /etc/somewhere.fp
Ed
Sh SEE ALSO
Xr veriexec 4 ,
Xr veriexec 5 ,
Xr security 7 ,
Xr veriexec 8 ,
Xr veriexecctl 8

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