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Date:   Tue, 26 May 2020 15:43:19 -0700
From:   Eric Biggers <ebiggers@kernel.org>
To:     Jes Sorensen <jes.sorensen@gmail.com>
Cc:     linux-fscrypt@vger.kernel.org, jsorensen@fb.com, kernel-team@fb.com
Subject: Re: [PATCH v2 0/3] fsverity-utils: introduce libfsverity
Message-ID: <20200526224319.GA182086@gmail.com>
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On Tue, May 26, 2020 at 06:25:22PM -0400, Jes Sorensen wrote:
> 
> One feature I would like to have, and this is what I confused in my
> previous comments. In addition to a get_digset_size() function, it would
> be really useful to also have a get_signature_size() function. This
> would be really useful when trying to pre-allocate space for an array of
> signatures, or is there no way to get that info from openssl without
> creating an actual signature?
> 

I don't think that's possible.

It's also not fixed for each hash algorithm, but rather it depends on the key
and certificate used.

- Eric