[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [iaik-jce] Cipher reset & provider independence
Stef Hoeben wrote:
> 2 little questions:
> - When doing a Cipher.update(), is it possible that the IV buffer is not
> This is probably not specified in the JCE specs but the SunJCE provider
> seem to reset the IV buffer to the value given with the init() method.
My reading of the spec says that the Cipher.getIV() method will return
the same value until a Cipher.init() method is called.
After a Cipher.doFinal() the Cipher object should be in exactly the
same state it was right after the previous Cipher.init() call.
> - About provider indepency of JCA/JCE: how can you use a KeySpec or an
> AlgorithmParameterSpec in a provider independent way. E.g. if I want to use
> the GOSTParameterSpec class, I have to write iaik.security.cipher.GOSTPa-
> rameterSpec in my code (which is not provider indpendent).
Generally unless the KeySpec introduces some special features (e.g. the
DESKeySpec) then a SecretKeySpec should work for the Cipher. If it
complain to your provider vendor :)
Mailinglist-archive at http://jcewww.iaik.at/mailarchive/iaik-jce/jcethreads.html
To unsubscribe send an email to email@example.com with the folowing content: UNSUBSCRIBE iaik-jce