The subject is discussed at length (and referenced by the repo) here https://www.gwern.net/Self-decrypting-files https://www.gwern.net/Self-decrypting-files for

The subject is discussed at length (and referenced by the repo) here https://www.gwern.net/Self-decrypting-files https://www.gwern.net/Self-decrypting-files for those interested in more. Gwern has mentioned it at least once on HN previously as well https://news.ycombinator.com/item?id=16295313 https://news.ycombinator.com/item?id=16295313