Re: pgcrypto encrypt

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>
Cc: Stephen Cook <sclists(at)gmail(dot)com>, PostgreSQL - general <pgsql-general(at)postgresql(dot)org>
Subject: Re: pgcrypto encrypt
Date: 2017-09-19 20:00:54
Message-ID: 20170919200054.GD15391@momjian.us
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On Tue, Sep 19, 2017 at 12:42:40PM -0700, Jeff Janes wrote:
> On Tue, Sep 19, 2017 at 12:20 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>
> On Wed, Sep  6, 2017 at 04:19:52PM -0400, Stephen Cook wrote:
> > Hello!
> >
> > Is there a way to decrypt data encrypted with the pgcrypto "encrypt"
> > function, outside the database? Assuming that I know the key etc...
>
> Yes, I think so.  pgcrypto uses openssl and gpg internally, so using
> those tools should work.
>
>
> I know that pgp_sym_encrypt and pgp_sym_decrypt interoperates well with
> "outside the database" gpg, although dealing with armoring and de-armoring as
> well as text mode or binary mode is a bit of a bother until you get used to it.
>
> But he seems to be asking about the "F.25.4. Raw Encryption Functions".  I
> wouldn't want to reassure him that it would be easy to make those work outside
> the database, without having seen it done.  But it should of course be possible
> to make it work, even if that means rearranging the code of pgcrypto and
> compiling into something that is standalone.

Uh, it should be possible with openssl, but I have never tried it.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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