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A little Terminate and Stay Resident program for transparent file encryption for DOS from 1996!

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..................
.  Index
. .......
.
. .Index
. .Xor v0.60
. .Usage
. .Info
. .Little History
. .Thanks To
. .EoF
.
..................






..............................................................................
.                                                                            .
.                                 Xor v0.60                                  .
.                                ...........                                 .
.                                                                            .
.    Una vez que se ejecuta queda residente en memoria, e intercepta la int  .
. 21h (Dos) y 2fh (Multiplex int).                                           .
.    Ya instalado el programa, los files encriptados se pueden leer/escribir .
. normalmente, y sin que uno se de cuenta en disco son grabados encriptados. .
.    Adem�s, si esta la opci�n Prompt del xor activada (xor /p1) cada vez    .
. que sea creado un file, aparecer� en pantalla la pregunta de si desea      .
. crear el archivo como encriptado.. (y=si)                                  .
. La opci�n Prompt se desinstala con xor /p0.                                .
.                                                                            .
. (�) El m�todo de encripci�n es, realmente, muy trucho, pero, tengase en    .
. cuenta que esto esta en vias de desarrollo, y para hacer algo interesante  .
. que funcione, conviene empezarlo de a poco!                                .
.                                                                            .
..............................................................................
.............................................................
.  Usage                                                   ..
.........                                            .......
.                                                        ..
.  Xor.Com     :If it's not installed => install          ..
.                                else => show Msg.         ..
.                                                           .
.  Xor.Com /u  :If it's installed                           .
.                  => If CAN be uninstalled => Uninstalls   .
.                                      else => Show Msg.    .
.                                                           .
.  Xor.Com /px :If it's not installed => show msg           .
.                  else if x=1 => Set Prompt On             .
.                          else   Set Prompt Off.           .
.                                                           .
.............................................................

.................................................................- - �
.  Info
.  ..Source
.  . ..Language\Compiler
.  . . ..Version 0.00. Pascal 7.0 with much BAsm.
.  . . ..Version 0.50. Full asm code. Tasm 3.2.
.  . . ..Version 0.52. Tasm 4.0.
.  . . ..Version 0.60. Tasm 4.0.
.  . ..Files             Bytes    Lines
.  .   ..DosConst.inc      456       16
.  .   ..XorConst.inc     1236       27
.  .   ..XorMacro.inc      834       26
.  .   ..Xor.asm          9885      472
.  ..Executable
�    ..Xor.com             920

......
..
.  Little History
. ................
.
.   +   Added.
.   *   Changed.
.   o   Who knows when/where it comes from?
.   -   Stirpped bug.
.
.  Version
.   0.01   o Unknow version. :-)
.   0.50   o Detect in memory.
.          o Encrypt. (only .enc files)
.          o Decrypt. (idem)
.          + Uninstall.
.          + Full asm code.
.          + Screen messages.
.          + De/Coding flag in screen.
.          + Little parameters checker.
.   0.51   + Little code/var optimization.
.          - DN int 2fh incompatibility (now use 16h int).
.          - Some bug with some internal variable.
.   0.60   + Use file time (don't use .Enc extension).
.          + /p0 Set Prompt=Off. (Default)
.              1 Set Prompt=On.
.          + Ask to crypt a file when the dos goes to create one.
.          - Can't set prompt if xor is not installed.
.
..
......

......
..
.   Thanks To
.  ...........
.
.   .Woody, for the help gived.
.   .FidoNet.
.   .Borland, for the BP 7.0 & TAsm.
.   .Norton, for the Norton Guides.
.   .
.   ...
.
..
......
�EoF�

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A little Terminate and Stay Resident program for transparent file encryption for DOS from 1996!

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