A few years ago, there was an article posted to Hacker News about some site that sold DRMed anime shutting down and how people who bought anime from the site wo

A few years ago, there was an article posted to Hacker News about some site that sold DRMed anime shutting down and how people who bought anime from the site would no longer have access to the things they bought. As it turned out, the special Flash-based anime viewer they provided just did a per-byte XOR with 0x42 on PNG files.