Does anyone know why "Openssl sha1 *.app" does not work on any files with .app extension?
The reason is in the error message - sha1 expects a file (or a string), and doesn't work on directories (an application bundle is a directory/folder).
Use the codesign tool instead.
Here's a general example:
$ codesign --verify --verbose iPhoto.app
iPhoto.app: valid on disk
iPhoto.app: satisfies its Designated Requirement
Thanks!. I did not reliaze it was a directory until I perforemd a ls -l.
Retrieving data ...