trf-intro(n) trf-intro(n)

NAME
       trf-intro - Introduction to Trf

SYNOPSIS
       package require TTccll  ??88..22??

       package require TTrrff  ??22..11pp22??


DESCRIPTION
       The  package  TTrrff  provides  a  number  of commands which take data and
       transform them in various ways.

BBAACCKKGGRROOUUNNDD
       The implementation of Trf began as proof-of-concept of the validity and
       usefulness  of the "stacked channel" patches to the core. These patches
       allow the writing of extensions to the generic I/O system of  the  core
       which  are  able  to  intercept all read/write operations on designated
       channels, thus giving it the ability  to  transform  the  data  flowing
       through these channels as desired.

       This  allows  things  like transparent encryption, compression, charset
       recoding, etc.

       Since version 8.2 of the tcl core the aforementioned patches  are  part
       of  the  tcl  core  itself,  changing the status of ttrrff from "extension
       requiring core patches" to "normal extension".

       Other packages built upon either the stackd channels directly,  or  Trf
       are:

       [1]    TTrrffCCrryypptt, by myself, contains various encryption systems

       [2]    TTLLSS, an SSL/TLS implementation by Matt Newman.

       [3]    TTccll MMIIMMEE by Marshall Rose.

AAPPII
       The  commands  provide  by  ttrrff can be placed into the three categories
       listed below. Note that all commands are added to the global namespace.

       Encodings
              The  encoding commands either take some data and return the same
              data in encoded form, or take encoded data and return a  decoded
              result.

              [1]    oocctt

              [2]    hheexx

              [3]    oocctt

              [4]    bbaassee6644

              [5]    uuuueennccooddee

              [6]    aasscciiii8855

              [7]    oottppwwoorrddss

              [8]    qquuootteedd-pprriinnttaabbllee


       Message Digests
              The  second category are message digests in general, simple ones
              like ccrrcc, and cryptographically strong algorithms like mmdd55.

              [1]    ccrrcc-zzlliibb

              [2]    ccrrcc

              [3]    aaddlleerr

              [4]    mmdd22

              [5]    mmdd55

              [6]    mmdd55oottpp

              [7]    sshhaa

              [8]    sshhaa11

              [9]    sshhaa11oottpp

              [10]   hhaavvaall

              [11]   rriippeemmdd-116600

              [12]   rriippeemmdd-112288


       Miscellaneous
              At last a number of commands not readily placed into  categories
              providing  password crypting, general transformations, data com-
              pression, error correction and others.

              [1]    ccrryypptt

              [2]    mmdd55ccrryypptt

              [3]    ttrraannssffoorrmm

              [4]    rrsseecccc

              [5]    zziipp

              [6]    bbzz22

              [7]    uunnssttaacckk

SEE ALSO
       adler, ascii85, base64, bz2, crc, crc-zlib,  crypt,  haval,  hex,  md2,
       md5,  md5otp,  md5crypt, oct, otpwords, quoted-printable, ripemd-128,
       ripemd-160, rsecc, sha, sha1, sha1otp, transform, uuencode, zip

KKEEYYWWOORRDDSS
       compression, encoding, error correction, message digest, transformation

COPYRIGHT
       Copyright (c) 1996-2003, Andreas Kupries 



Trf transformer commands             2.1p2                        trf-intro(n)