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signature

Grokking Gatekeeper in Catalina

Important changes for anyone distributing command tools in particular, and a good time to ensure you only ship signed and notarized apps if possible.

June 12, 2019 Macs, Technology

Signet release 1.0: Check app signatures in bulk

T T Read More

Crawls selected folders checking all app signatures. Reports all signatures which have problems, including unsigned apps.

May 28, 2019 Macs, Technology

When does Mojave check an app’s signature? The answer isn’t entirely consistent

App signatures are only checked on app first run – it may once have been true, but is no longer accurate. But can you bypass those additional checks? Is this a vulnerability?

May 13, 2019 Macs, Technology

Checking your app’s own signature

How can an app check that nothing has nobbled it? How to use its code signature to perform a simple launch test.

May 11, 2019 Macs, Technology

PDF without Adobe: 12 Vulnerabilities in digital signing

Do you use digital signatures in PDF documents, or do you trust your PDF reader to check them? You could be spoofed into trusting forgeries.

February 28, 2019 Macs, Technology

PDF without Adobe: 8 Security, integrity and forensics

Can you get malware in PDF? How far can you trust a PDF, or could it be a forgery? How to sign PDFs, and what data may remain hidden inside them.

February 19, 2019 General, Language, Macs, Technology

Code signing for the concerned: 6 Signing scripts and command tools

Can you sign AppleScript apps in Script Editor? Is there a better tool? What’s the best way to sign a command tool developed in Xcode?

January 31, 2019 Macs, Technology

Code signing for the concerned: 5 Signing and privacy control

One important requirement for code signatures is with Mojave’s new privacy controls. Are they needed, though?

January 29, 2019 Macs, Technology

Code signing for the concerned: 4 Results and testing

Testing at the command line, with What’s Your Sign?, and according to the requirements of the signature.

January 18, 2019 Macs, Technology

Code signing for the concerned: 3 Signing an app

How to perform ad hoc signing, signing with a personal certificate, and set signing up in Xcode.

January 17, 2019 Macs, Technology

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