Opening a REQ File

The REQ file type is primarily associated with OpenSSL.

REQ	File extension: REQ
	File type:	certificate request

What is a REQ file

REQ files mostly belong to OpenSSL by OpenSSL Project Authors. A REQ file is a digital certificate signing request created by a cryptography tool such as OpenSSL. It usually contains DER or Base64 encoded text written in RFC2986 PKCS #10 syntax. Information saved in a REQ file includes data identifying the initiator (person, company etc.) of the request. To have ensure other parties are able to verify a certificate, the initiator needs to have their Certificate Authority sign their REQ file. Another type of REQ file contains the version request of a digital camera manufactured by Canon.

How can I open a REQ file?

You need a suitable software like OpenSSL from OpenSSL Project Authors to open a REQ file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your REQ file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a REQ file directly in the browser:. Just drag the file onto this browser window and drop it.

Online REQ Text Viewer

Choose your .req file to analyze

or drag and drop it here

Online File Viewer

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REQ file format:

Each file has a definite file format, that is, how the stored data is arranged in the file. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. When there is a problem with a file, the first step to solving it is to determine the file format. Our examination of the REQ files comes to the following conclusion:

Files with the REQ extension are quite widely used. This file type includes various formats for various programs. The file formats most commonly found in REQ files are:

• 45% of all REQ files use the popular certificate file format. A digital certificate is a unique, digitally signed document which authoritatively identifies the identity of an individual or organization. Using public key cryptography, its authenticity can be verified to ensure that the software or website you are using is legitimate. They consist of illegible, cryptic characters. A typical file size is 720 bytes. It is a modern file type. Several words can almost always be found in the files, e.g. com0 and gmail. These files are often associated with requerimiento and fiel.
• 15% of all REQ files have the same signature -----BEGIN . These files are text files, so they contain words and text. The file size is in the range of 1 KB to 2 KB. The following keywords are characteristic: ----BEGIN NEW CERTIFICATE REQUEST----. Some examples of file names are Request.req. Files like these are about cert.

All other REQ files (40%) have no uniform format, often e.g. XML, UTF-8, JSON and START. Often described as shtdwn, data, mail, activate, disigweb, docucm, input or apem. If you want to find out which format your REQ file belongs to, just click on the button "Choose your .req file to analyze".