If Mac code signing is tampered with, what might fail?

If Mac code signing is tampered with, what might fail? What annoyances or real problems may occur when the digital signature of a Mac application is broken?
Asked by: Guest \| Views: 194

Total answers/comments: 2

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Guest [Entry]

"An example of where code signing will 'break' an application:

Keychain Access.app will not allow you to view passwords if it detects it has been tampered with.

Source: Apple Mailing List and Jaharmi's Irreality"

Guest [Entry]

A somewhat detailed explanation of code signing in Snow Leopard is provided in ars technica's Snow Leopard review. As far as I can tell, breaking code signing will not really break anything. However, it will cause apps to become untrusted which means having to verify more of their actions.