Generating random bytea values in PostgreSQL

While playing around with answering an interesting question on dba.stackexchange.com I wrote a simple C extension to PostgreSQL that generates random bytea values of a user-specified size. Fast.

In case anyone else is looking for a good way to dummy up random binary data in PostgreSQL, you can find the code in my scrapcode repository on GitHub

See the extension's README for details.

There's a pure SQL version fast enough to use for generating a few 100s of KB of data, too, or a couple of MB if you're patient.