2012-03-08 19:32:42 -07:00
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.\" This manual is Copyright 2012 by pi-rho <ubuntu@tyr.cx>
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.\"
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.\" This program is free software: you can redistribute it and/or modify
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.\" it under the terms of the GNU General Public License as published by
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.\" the Free Software Foundation, either version 3 of the License, or
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.\" (at your option) any later version.
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.\"
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.\" This package is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public License
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.\" along with this program. If not, see <http://www.gnu.org/licenses/>.
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.\"
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.\" On Debian systems, the complete text of the GNU General
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.\" Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".
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.
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.Dd March 3, 2012
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.Dt XOR 1
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.Os "network reverse engineering tools"
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.
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.Sh NAME
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.Nm xor
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.Nd apply mask bytes to a stream using XOR
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.
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.Sh SYNOPSIS
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.Nm xor
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.Op Fl h | Fl v
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.Nm xor
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.Op Fl x
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.Ar MASKBYTE
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.Op Ar MASKBYTE ...
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.Nm xor
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.Fl s
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.Ar MASKSTRING
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2012-03-08 19:32:42 -07:00
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.
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.Sh DESCRIPTION
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2012-02-22 19:52:14 -07:00
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The basic concept for this utility is to apply a set of mask bytes, repeatedly,
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to a stream of input. The application of the mask bytes is accomplished using
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the bitwise XOR operation.
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.
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.Sh USAGE
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As a filter with the hexadecimal mask bytes
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.Bq 20 , 2f
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applied to the input stream (i.e.
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.Bq 20 , 2f , 20 , 2f , ... Ns )
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.D1 ... | Nm xor Fl x Ar 20 Ar 2f | Li ...
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As a filter with a string of characters used as a mask
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.D1 ... | Nm xor Fl s Qo Ar " key " Qc | Li ...
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2012-03-08 19:32:42 -07:00
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.
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.Sh OPTIONS
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A summary of the options supported by
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.Nm xor
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is included below.
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.
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.Bl -tag -width Ds
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.It Fl h
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usage information
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.It Fl v
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the program's version
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.It Fl x
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explicity interpret mask bytes as hexadecimal digits
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.It Fl s
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use a string of characters as the mask
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.It Ar MASKBYTE Op Ar MASKBYTE ...
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a list of mask bytes to apply to the input stream
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.It Ar MASKSTRING
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a string of characters
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.El
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.
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.Sh SEE ALSO
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.Xr hdng 1 ,
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.Xr unhex 1
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.
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.Sh AUTHORS
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.An Zephyr Aq Ad zephyr@dirtbags.net ,
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.An pi-rho Aq Ad pi-rho@tyr.cx
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