PureBasic Forums - English

Hello!

Yesterday was the first time i worked with encryption
Result is a user library with only one function:

CryptMemory()

I've tested it with 'CrypTool'. It seems, that my method is save.
(Ok, nothing is really save.)

Maybe it could also be very easy to decode? So please try to crack an encoded file!
Also i don't know, if its fast enough.
(I have no values to compare)

Here you can download (13 kb):
http://www.thinkrelative.de/cryptmemory.zip

Included: Library, description and a
'visuell' (Image) Example.

Please test it and give me a gracious feedback.
(..cause i'm a greenhorn in this sphere )


Regards,
Mischa

Updated!

There was a stupid bug in the library.
It's corrected now.

Same download link.

And...Please..test..

Or has nobody knowledge in encryption?

Regards,
Mischa

Hi! It seems to work just fine. Now, it isnt just a simple moving-of-achii-by-number method? Or a xor with pw

Thanks for your reply.

No, it isn't so easy.
For this case, i've included the 'image'-example, cause
so you can directly see the results.

Simple moving or xor would result in periodical patterns
inside image, or maybe only in a 'color move'.

My method is a little bit more pretentious.

Does anybody knows about decryption software to check my libs
protection level?


Regards,
Mischa

Update.

Now its much more safe. I've build in an
avalanche effect (is this the right translation?)
and some more changes..

Maybe someone will test it...

UserLib + Example + Source

or..

Commandline Encoder/Decoder + Source of function

Regrads,
Mischa