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112 lines
3.4 KiB
Groff
112 lines
3.4 KiB
Groff
.\" $NetBSD: multigest.1,v 1.1.1.1 2014/03/05 05:09:44 agc Exp $
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.\"
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.\" Copyright (c) 2013 Alistair Crooks <agc@NetBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd August 17, 2013
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.Dt MULTIGEST 1
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.Os
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.Sh NAME
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.Nm multigest
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.Nd calculate multiple message digests simultaneously
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.Sh SYNOPSIS
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.Nm
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.Fl r
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.Op Fl a Ar algorithms
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.Op Fl c Ar digestfile
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.Op Fl F Ar output-format
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.Op Fl o Ar output
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.Op Fl S Ar output-separator
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.Op Fl s Ar /regex/replacement/
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.Op file ...
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.Sh DESCRIPTION
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The
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.Nm
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utility calculates message digests of files or,
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if no file is specified, standard input.
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The list of possible algorithms is given in the
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.Xr libmultigest 3
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manual page.
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.Pp
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The
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.Nm
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utility is a simple wrapper for the various different
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algorithm implementations, which are located in the standard
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C library, and was designed to be scalable as new message digest
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algorithms are developed.
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.Pp
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The
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.Nm
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utility uses the
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.Xr libmultigest 3
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library.
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.Pp
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The following options are available:
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.Bl -tag -width XregexXreplacementXYYY
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.It Fl a Ar algorithms
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specify a comma-separated list of algorithms to be calculated
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.It Fl c Ar stored-digest-file
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check, or verify, a file containing previously-generated digests
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.It Fl F Ar output-format
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print the output in the format requested.
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Possible values are
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.Dq openssl ,
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.Dq digest ,
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and
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.Dq multigest .
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The default is
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.Dq multigest
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which means that any replacement text is printed in a separate field.
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.It Fl o Ar output-file
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write the calculated digests to the output file
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.It Fl r
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shorthand for input substitution for the RCS Identifiers
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.Dq Id
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and
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.Dq NetBSD
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.It Fl S Ar output-separator
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separate each individual digest on output with the provided string.
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The output separator defaults to the null string, i.e. no separator.
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.It Fl s Ar /regex/replacement/
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before calculating digests, run the following transformation on the input
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to normalise any input.
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Using this, the effects of expanding version control system
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identifiers is nullified.
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.El
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.Pp
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If no input files are provided, input is taken from standard input.
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.Sh EXIT STATUS
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.Ex -std multigest
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.Sh SEE ALSO
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.Xr libmultigest 3
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.Sh HISTORY
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The
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.Nm
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utility first appeared in
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.Nx 7.0 .
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.Sh AUTHORS
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The
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.Nm
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utility was written by
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.An Alistair G. Crooks Aq Mt agc@netbsd.org .
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