I'm "signing" my fonts by placing encrypted information in name table ID 32137 (chosen for no particular reason).
The spec says:
Name IDs 256 to 32767, inclusive, are reserved for font-specific names such as those referenced by a font's layout features.
Name IDs 256 to 32767, inclusive, are reserved for arbitrary stuff.
What do you say? Is it okay to put my stuff there or is there maybe a better place?