It is often, occasionally followed by a wave of hand, that one advises or talks of "jar" (packaged java files that makes up an application or module) files as being signed.

Few times we ask back: "What do you mean by signed"?

What does it mean for a jar file to be signed?

Does this signing has parallels to how we sign physical documents? Do they differ? How do they differ if they do?

How do you establish a "pattern? of understanding for digital signatures so that you treat the subject abstractly just like when someone says they signed a physical document?

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