secrect message batch

[Boozu]

Hi everyone. Just joined.

I have looked all over the internet for a way to encode a file. What I mean is, I want a batch file to read a text file and wright a new text file with a set output such as "A" in original file is changed to "H" in new file. I would really like it if you could make it so one letter can tern into multiple symbols, "D" = "45". I want to encode a message and send it to someone who will have a decoder (I can revers engineer any code you give me to decode the file). Also I don't need the hole alphabet just a few lines.

a=h, d=45 in the folowing examples
It may be hard but if you can make it look like this:
add add add = h4545 h4545 h4545 

This will be fine:
add
add
add =
h4545
h4545
h4545 

This will most likely be the easyest to do:
a
d
d

a
d
d

a
d
d=

h
45
45

h
45
45

h
45
45 

Thanks for your help.

[devcom]

i have encoder but it was project to encode passwords based on random generated keys here is how it looks:

Code: [Select]

[ 1:43:15,28]    GENERATING KEY...
[ 1:43:17,49]    DONE...
[ 1:43:17,49]    KEY: alED2UCO4kSfmTrypQ678g5W0Bh1ZiNx9v3J
[ 1:43:17,49]    ENTER PASSWORD TO ENCODE
[ 1:43:17,49]    [PASSWORD]: computerhope
[ 1:43:21,78]    GENARATED PASSWORD:
[ 1:43:21,78]    f91JBQkT59Jk


[ 1:43:21,79]    GETING KEY...
[ 1:43:21,79]    DONE...
[ 1:43:21,79]    KEY: alED2UCO4kSfmTrypQ678g5W0Bh1ZiNx9v3J
[ 1:43:21,81]    ENTER PASSWORD TO DECODE
[ 1:43:21,81]    [PASSWORD]: f91jbqkt59jk
[ 1:43:36,38]    DECODED PASSWORD:
[ 1:43:36,38]    computerhope
its not perfect but it works

i will try to make what you want but one question:

you want just 'a' and 'd' , or whole alphabet? it would be easier to do sth like this:

Code: [Select]

input:
a=10
d=45
o=11
n=44

addon
output:1045451144

[gh0std0g74]

you would want to use better encryption such as AES, etc for this kind of thing. NOT using a batch file and simple caesar cipher like this. Choose a programming language that have encryption modules, etc Python/Perl.

[Boozu]

Wow that was fast devcom. i just used "a" and "d" as random examples. If you could you could do 5 or 6 letters of the alphabet I can fill in the rest of it.

Thanks

[devcom]

you would want to use better encryption such as AES, etc for this kind of thing. NOT using a batch file and simple caesar cipher like this. Choose a programming language that have encryption modules, etc Python/Perl.

yea i think so too, but batch is fun 

[devcom]

@Boozu

Code: [Select]

@echo off
setlocal enabledelayedexpansion
set /p encode=WORD:

set num=0

:LOOPE
call set tmpa=%%encode:~%num%,1%%%
set /a num+=1
for /f "tokens=1,2 delims==" %%a in (a.txt) do (
if "%tmpa%" equ "%%a" set enword=%enword%%%b
)
if not "%tmpa%" equ "" goto LOOPE

echo ENCODE: %enword%
set num=0

:LOOPD
call set tmpa=%%enword:~%num%,2%%%
set /a num+=1
for /f "tokens=1,2 delims==" %%a in (a.txt) do (
if "%tmpa%" equ "%%b" set deword=%deword%%%a
)
if not "%tmpa%" equ "" goto LOOPD

echo DECODE: %deword%
pause
a.txt

Code: [Select]

a=41
b=29
c=16
d=39
output:

Code: [Select]

WORD: aaadddcb
ENCODE: 4141413939391629
DECODE: aaadddcb

[Boozu]

Wow that's amazing. I found a problem though, if you only use numbers it gets mixed up be and will add random letters.

a.txt file

Code: [Select]

e=35
l=12
w=23

If you have a word with "le" it encodes as 1235, and it decodes as "lwe". That means you can only do so many numbers in the code. That's easy enough to fix with letters. Can you find a way to include spaces and symbols into this. It will show up in the encoded mesage but it will not decode with them. If you want to make this for yourself put a blank line at the top of the a.txt file. And If you want to use capital letters you need to add them in with there own key. Can you make the encode go to a file so i can send it and then plug that code into the decoder?

[devcom]

sry it was typo in LOOPD so change

Code: [Select]

set /a num+=1to

Code: [Select]

set /a num+=2in LOOPD

[Boozu]

Yay. That worked. So if i change the number to, say =5, the a.txt file would have to have a=12345 for the codes (or ,=,,,,, for a comma)? It works with symbols but the folowing will not work, block folowing text, or crash the program ( |^&()!<>~ ) but they are not that impotent. The hard thing is making shour that all of the code is different. But I still want it to send the code to a text file. I can't figure out the code you made so that takes encoded text and puts it in a text file and I can't make it do decoding only. Your program encodes and then decodes it. I know I said I could revers engineer the code you sent me but you sent me a curve ball cuz I wasn't expecting that.

Thanks for the help.

a.txt so far. Make shour that you skip the first line.

Code: [Select]


a=87
b=63
c=60
d=52
e=76
f=39
g=49
h=38
i=31
j=93
k=09
l=82
m=72
n=69
o=13
p=74
q=85
r=10
s=41
t=26
u=61
v=07
w=56
x=32
y=12
z=19
 =05
.=30
?=90
,=80
@=36
#=03
$=40
%=08
_=70
+=01
*=06
-=20
/=//
'=''
:=::
"=""
[=[[
]=]]
\=\\
}=}}
{={{
1=55
2=11
3=88
4=77
5=00
6=99
7=22
8=77
9=66
0=44

[Boozu]

Ok. I made it out put to a file.
Put this,

Code: [Select]

echo %enword%> name of file herehere.

Code: [Select]

:LOOPE
call set tmpa=%%encode:~%num%,1%%%
set /a num+=1
for /f "tokens=1,2 delims==" %%a in (a.txt) do (
if "%tmpa%" equ "%%a" set enword=%enword%%%b
)
>>>>>>>>>>HERE<<<<<<<<<<
if not "%tmpa%" equ "" goto LOOPE

[Boozu]

Ok. I finally figured out how to decode an input. It was a matter of finding the right variables to switch. I have the code echo to a file called code.txt.

Code: [Select]

@echo off
setlocal enabledelayedexpansion
set /p decode=CODE:

set num=0

:LOOPE
call set tmpa=%%decode:~%num%,2%%%
set /a num+=2
for /f "tokens=1,2 delims==" %%a in (b.txt) do (
if "%tmpa%" equ "%%a" set deword=%deword%%%b
)
echo %deword%> code.txt
if not "%tmpa%" equ "" goto LOOPE

echo DECODE: %deword%
set num=0

:LOOPD
call set tmpa=%%deword:~%num%,1%%%
set /a num+=1
for /f "tokens=1,2 delims==" %%a in (b.txt) do (
if "%tmpa%" equ "%%b" set enword=%enword%%%a
)
if not "%tmpa%" equ "" goto LOOPD

echo ENCODE: %enword%
pauseTo use this you will need to make a file called b.txt with everything flipped around from a.txt.

Code: [Select]


87=a
63=b
60=c
52=d
76=e
39=f
49=gAgain, you need to skip the first line in the file or the "a" will not be read.

If anyone can make it so that you can use the original a.txt key file for the decoding please post. And thanks devcom for the help.

[Helpmeh]

You could use a similar for loop...

setlocal enabledelayedexpansion
for /f "tokens=1,2 delims==" %%a in ('type a.txt') do set decode=!decode:%%b=%%a!
echo %decode%

You could put that for loop after this piece of code...so you don't have to type in messages.

set /p decode=<message.txt

On the encoder, you can echo the output variable to message.txt then send it to whoever.

Note that message.txt can only be one line or it will only decode the first line.

[devcom]

To use this you will need to make a file called b.txt with everything flipped around from a.txt.
If anyone can make it so that you can use the original a.txt key file for the decoding please post. And thanks devcom for the help.

my orginal code use only one file

here:

Code: [Select]

:LOOPD
call set tmpa=%%enword:~%num%,2%%%
set /a num+=1
for /f "tokens=1,2 delims==" %%a in (a.txt) do (
if "%tmpa%" equ "%%b" set deword=%deword%%%a
)
if not "%tmpa%" equ "" goto LOOPD

So if i change the number to, say =5, the a.txt file would have to have a=12345 for the codes (or ,=,,,,, for a comma)?

yes

It works with symbols but the folowing will not work, block folowing text, or crash the program ( |^&()!<>~ ) but they are not that impotent.

those symbols needs to be escaped:

Code: [Select]

H:\Users\_CORE7>echo b & echo a
b
a

H:\Users\_CORE7>echo b ^& echo a
b & echo a

EDIT:

lol Helpmeh you are 1337 (read. leet) 

[Boozu]

Helpmeh I could not get your code to work. devcom I know that it decodes it but i haven't been able to get it to work with the coded input and decode it. But what I did works and I will work on it to make it code input and decode input and to work with one key file.

[devcom]

just add another set /p and change var on call set

Code: [Select]

set num=0
set /p word=CODE:
:LOOPD

call set tmpa=%%word:~%num%,2%%%
for /f "tokens=1,2 delims==" %%a in (a.txt) do (
if "%tmpa%" equ "%%b" set deword=%deword%%%a
)
set /a num+=2
if not "%tmpa%" equ "" goto LOOPD
echo %deword%