Symmetric cipher question
m999 at vp.pl
m999 at vp.pl
Tue Feb 8 13:49:49 CET 2011
I need clear encryption output not only for AES, but also for DES, RC5 and BLOWFISH so I taught that GnuPG is universal tool but in that case it looks I have to find separable encryptors for all of these methods.
"Sven Radde" <sven at radde.name> napisał(a):
> Am 20:59, schrieb m999 at vp.pl:
> > How can I separate my encrypted 4-byte word from the rest of file. I
> > need only encrypted part of my word, I don't want to implement AES on
> > my own.
> GnuPG is most probably not the optimal tool for what you are trying to
> do. (I might be too unimaginative, though ;-)
> Apart from the encrypted data, the output also includes a random AES
> key, encrypted by your password and possibly other information such as
> salt, initialization vector and the like -- all of which you will need
> in order to do something meaningful with the encrypted data (i.e.,
> decrypt it again). Also, GnuPG does not implement "plain" AES but uses
> its crypto algorithms in a slightly non-standard way (for historical
> reasons, I am told), so you would most probably need GnuPG again to work
> on the ciphertext, anyway.
> I am almost sure that there is a conveniently usable AES library for
> whatever programming language you are working in and I suggest looking
> into that, if you want to have "just AES".
> cu, Sven
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