'\"
'\" Generated from file 'vt_otp\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2009 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>
'\"
.TH "tcl::transform::otp" n 1\&.1 tcllib "Reflected/virtual channel support"
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.BS
.SH NAME
tcl::transform::otp \- Encryption via one-time pad
.SH SYNOPSIS
package require \fBTcl 8\&.6 9\fR
.sp
package require \fBtcl::transform::core ?1\&.1?\fR
.sp
package require \fBtcl::transform::otp ?1\&.1?\fR
.sp
\fB::tcl::transform::otp\fR \fIchan\fR \fIkeychanw\fR \fIkeychanr\fR
.sp
.BE
.SH DESCRIPTION
.PP
The \fBtcl::transform::otp\fR package provides a command creating
a channel transformation which uses externally provided one-time pads
to perform encryption (on writing) and decryption (on reading)\&.
.PP
A related transformations in this module is
\fBtcl::transform::rot\fR\&.
.PP
The internal \fBTclOO\fR class implementing the transform
handler is a sub-class of the \fBtcl::transform::core\fR
framework\&.
.SH API
.TP
\fB::tcl::transform::otp\fR \fIchan\fR \fIkeychanw\fR \fIkeychanr\fR
This command creates a one-time pad based encryption transformation on
top of the channel \fIchan\fR and returns its handle\&.
.sp
The two channels \fIkeychanw\fR and \fIkeychanr\fR contain the
one-time pads for the write and read directions, respectively\&. Their
contents are reads and xored with the bytes written to and read from
the channel\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIvirtchannel\fR of the
\fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&.
Please also report any ideas for enhancements you may have for either
package and/or documentation\&.
.PP
When proposing code changes, please provide \fIunified diffs\fR,
i\&.e the output of \fBdiff -u\fR\&.
.PP
Note further that \fIattachments\fR are strongly preferred over
inlined patches\&. Attachments can be made by going to the \fBEdit\fR
form of the ticket immediately after its creation, and then using the
left-most button in the secondary navigation bar\&.
.SH KEYWORDS
channel transformation, cipher, decryption, encryption, one time pad, otp, reflected channel, tip 230, transformation, virtual channel, xor
.SH CATEGORY
Channels
.SH COPYRIGHT
.nf
Copyright (c) 2009 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>

.fi
