I don't think it is exactly key escrow, because there is no third-party involved. I generated my own keys for my own use, and nobody has access to them (that I know of).

I know this might just be a semantic argument, but the Wikipedia article linked is a good example of how controversial proper key escrow (involving a third party) is.

If I'd refer people to a Wikipedia article, the article on Key Management (https://en.wikipedia.org/wiki/Key_management) might be a better one, as it is more general, and my blog post touches on many key management topics.