Indeed, Colin mentions scrypt in TFA: > In 2009, having had many users ask for passphrase-protected Tarsnap key files, and having determined that the current

Indeed, Colin mentions scrypt in TFA: > In 2009, having had many users ask for passphrase-protected Tarsnap key files, and having determined that the current state of the art of password based key derivation was sorely lacking, I invented scrypt — and in the process, opened up a whole new field of cryptography. Sure, I was doing this because it was something I could do to make Tarsnap more secure; but it would be a stretch to place this under the umbrella of "spending my time working on backups".