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Encrypts a hello world greeting to my personal public PGP key that's published at https://keybase.io/rietta.
SELECT
ARMOR(PGP_PUB_ENCRYPT(
'Hello, World',
DEARMOR('-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2
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=Q+PC
-----END PGP PUBLIC KEY BLOCK-----')
)) AS message;
@rietta

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@rietta rietta commented Jan 5, 2016

One example invocation resulted in:

-----BEGIN PGP MESSAGE-----

wcFMAx79Htw/t0ZjARAAhOBYc8/7sQcIIBwKxP8P61LcA0LtYSnMeVCiwnzfzCSeT+UvhCKhCkBI
4NvsjrKlCTJv+qYu3suIRXhS5jhuVK5PDoqcX8oPBHh8bMHkn3hX5Ze16S4PHJlWeWCf6R4VW94M
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cloSuhBkBr2ifo95f3VlkkzyelY=
=8Ufw
-----END PGP MESSAGE-----

Which I can decrypt, but no one else can.

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@wireddude wireddude commented Jan 5, 2016

Cool!

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@rietta rietta commented Jan 6, 2016

These are the setup instructions on a brand new Ubuntu Linux server instance (probably also applies to Debian).

Install both postgresql and postgresql-contrib (important).

sudo apt-get install postgresql postgresql-contrib

Enabling pgcrypto for a database requires superuser privileges so,

sudo su -l postgres
ENTER YOUR SUDO PASSWORD

psql project_database
CREATE EXTENSION pgcrypto;
\q
exit

Return to your project database needs using the regular non-root, non-admin user with access to the encryption database encryption functions documented in http://www.postgresql.org/docs/9.4/static/pgcrypto.html.

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