What's Your Sign will also compute hashes for any item. For example, the certificate used to sign the Transmission application (that was infected with OSX/KeRanger), was revoked by Apple: Files that are signed by Apple proper will contain a green lock icon:įiles that are signed, but do not belong to Apple proper (i.e are from the Mac App Store, or simply signed with an Apple Developer ID) will contain a black lock icon:įinally, files that are unsigned will contain a red unlock icon:Īlso, signed items, who's signing certificate has been revoked, will similarly contain a red unlock icon. Once What's Your Sign is installed, one can simply control- or right-click on any file, then select the 'Signing Info' menu option to view information about the file's cryptographic signing information.Ĭlicking on the 'Signing Info' menu option will display an informative window that displays the selected file's cryptographic signing information (or lack thereof). Click 'Install' (or 'Upgrade') to install the tool: Then, simply double-click on 'WhatsYourSign Installer.app'. Depending on your browser, you may need to manually unzip the application by double-clicking on the zipped archive: To install What's Your Sign, first download the zip archive containing the application installer. For example, binaries signed by Apple can (always?) be trusted, while files that are unsigned may be untrusted or even malicious. Moreover, it can help determine whether a file should be trusted. A file or binary's cryptographic signature is important as it can determine its creator (Apple proper, a 3rd-party, etc). What's Your Sign is utility with a simple goal: from the UI, make it trivial to view any file's cryptographic signing information.
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