I did lots of tests

CHRTRAN() works fine to replace 2 letters at the same time.


CHRTRAN (fdados.data,"DF","FD")

revert:

CHRTRAN (fdados.data,"FD","DF")


The problem is that it does not seem to work with blob fields, because I tested it in memo field and works fine,
but not with blob files.

The question is:

If I invert several letters of a picture file, would someone be able to guess the letters ?

It seems to me that a blob would be safer, if it had worked.

When the .jpg is stored into a memo field I have no idea of what all the characters mean and how efficient is to alter them.

I want to hide a bank card (.jpg), and see it as want.


Moises













>>Try
>>
>>REPLACE DATA2 WITH CHRTRAN (data2,"DE","ED")
>>
>>-to restore, do it again-
>>
>>REPLACE DATA2 WITH CHRTRAN (data2,"DE","ED")
>>
>>this is OK if all you want to do is fuzz it up.
>
>"fuzz it up"
>Interesting point. We don't know whether Moises just wants to degrade the image to a point where it is recognizable but un-usable or where he wants to make it completely scrambled in the encrypted state.....