Web Files

Zero-byte .CER Internet Security Certificate

Download a zero-byte .CER file, or one of about 1 KB, for QA. Neither file is a real document.

About this Zero-byte .CER file

What you get

empty.cer is 0 bytes. 1kb.cer is 1,024 bytes of filler text. Both use the Internet Security Certificate name.

How to use it in QA

Attach either file where your product asks for a .CER file. Use the empty file for a zero-length check, and the 1 KB file for a small non-empty upload. The download names stay empty.cer and 1kb.cer.

Zero-byte .CER questions

What is inside the files?

empty.cer is empty. 1kb.cer is about 1 KB of filler text, not a real Internet Security Certificate.

Will an app open them?

Most apps will report an empty or invalid Internet Security Certificate. That is the point of the fixture.

Is the download safe?

Yes. Neither file has an executable payload.

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