.REQ File Extension

SSL Certificate Request File

Developer N/A
3.1  |  17 Votes

What is a REQ file?

A REQ file is a file used in the process of setting up a digital certificate. It stores a Certificate Signing Request (CSR), which includes information that uniquely identifies the initiator of the request. REQ files are sent to trusted entities (certificate authorities) who use the requests to generate valid digital certificates for the requesters.

More Information

CSRs are used in the process of public key cryptography, which is used to validate identities on the Internet. Digital certificates validate the authenticity of a company or merchant online so users or customers can know that the website is trustworthy and secure.

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Programs that open REQ files


Canon SD Card Version Request File

Developer Canon
3.5  |  2 Votes

Empty file sometimes stored on Canon digital camera SD cards; saved with the filename ver.req and used for reporting the firmware version on the camera when the user holds the FUNC/SET button and presses the DISP button.

More Information

You can manually create the ver.req empty file by saving a blank document in Microsoft Notepad and renaming the filename to ver.req.

Programs that open or reference REQ files

Included with OS

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