[Gambas-user] Encrypt, decrypt and question about AES

Rolf-Werner Eilert rwe-sse at osnanet.de
Wed May 11 10:22:38 CEST 2022

I have been experimenting with gb.openssl and cipher library.

Using AES-256-CBC there is one question open to me. I read that AES 
prolongs any offered key to 256 bytes by concatenating the shorter key. 
Would you say that it is somewhat faster (and maybe somewhat more 
secure) when I offer a key of 256 bytes?

My usage would be to cipher whole text files, and sometimes (well, not 
so often but alas...) I have to open a whole row of these files to 
search for an entry. So there would be

for each bla in dir...
   decipher the file
   search file contents

I just would appreciate any way of speeding this up a bit. Currently the 
files are not crypted, and it takes about 15 seconds to read and search 
all of them.


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