incremental digest (and other) functions?

From: Pawel Veselov <pawel(dot)veselov(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: incremental digest (and other) functions?
Date: 2014-11-17 08:52:03
Message-ID: CAMnJ+BdR-qLjX+jDBG04EBXUSRGOXZrMsm0yz-ujok0exG6E+A@mail.gmail.com
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Hi.

I was looking into a need of doing SHA on contents of a "large object", and
it seems that the only digest (and other) functions provided by pgcrypto
produce output based on a single string on an input, without being able to
accumulate for multiple data blocks. It would be nice to see those, IMHO.
Or may be I missed them?

Thank you,
Pawel.

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