Nikos Mavrogiannopoulos <[email protected]> writes:

> It seems you're correct, sorry for the noise. I interpreted the
> _digest() functions of nettle similarly to digest output functions in
> gcrypt which don't cause a reset of the hash.

So in nettle, instead you need to copy the state (or start over) if you
want to have the digest of X_0 and the digest of the concatenation X_0 +
X_1. Which I'd expect to be a less common use case.

Regards,
/Niels

-- 
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
Internet email is subject to wholesale government surveillance.
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