NAME

       tcl::transform::otp - Encryption via one-time pad

SYNOPSIS

       package require Tcl 8.6 9

       package require tcl::transform::core ?1.1?

       package require tcl::transform::otp ?1.1?

       ::tcl::transform::otp chan keychanw keychanr

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DESCRIPTION

       The  tcl::transform::otp  package  provides  a  command  creating  a  channel  transformation  which uses
       externally provided one-time pads to perform encryption (on writing) and decryption (on reading).

       A related transformations in this module is tcl::transform::rot.

       The internal TclOO class implementing the transform handler is a sub-class  of  the  tcl::transform::core
       framework.

API

       ::tcl::transform::otp chan keychanw keychanr
              This command creates a one-time pad based encryption transformation on top of the channel chan and
              returns its handle.

              The  two  channels  keychanw  and  keychanr  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.

BUGS, IDEAS, FEEDBACK

       This  document,  and  the package it describes, will undoubtedly contain bugs and other problems.  Please
       report such in the category virtchannel of the  Tcllib  Trackers  [http://core.tcl.tk/tcllib/reportlist].
       Please also report any ideas for enhancements you may have for either package and/or documentation.

       When proposing code changes, please provide unified diffs, i.e the output of diff -u.

       Note  further  that  attachments  are strongly preferred over inlined patches. Attachments can be made by
       going to the Edit form of the ticket immediately after its creation, and then using the left-most  button
       in the secondary navigation bar.

KEYWORDS

       channel  transformation,  cipher,  decryption, encryption, one time pad, otp, reflected channel, tip 230,
       transformation, virtual channel, xor

CATEGORY

       Channels

COPYRIGHT

       Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>

tcllib                                                 1.1                             tcl::transform::otp(3tcl)