Opening an OCSP-RESPONSE File

The OCSP-RESPONSE file type is primarily associated with OpenSSL.

OCSP-RESPONSE	File extension: OCSP-RESPONSE
	File type:	certificate response file

What is an OCSP-RESPONSE file

OCSP-RESPONSE files mostly belong to OpenSSL. OCSP response files are data files used in certificate management. They hold certificates' status details and are generated by tools such as OpenSSL.
These files are part of the Online Certificate Status Protocol system and serve to confirm if a digital certificate is active or revoked.

The file contains cryptographic responses from a certificate authority.

They are used in secure web communication to validate certificate trust.

The response is typically in a binary format that is processed by security software.

FilExt.com tip: To open or view the file, use specialized tools like OpenSSL. For more specific details, you might visit the OpenSSL website.

How can I open an OCSP-RESPONSE file?

You need a suitable software like OpenSSL to open an OCSP-RESPONSE 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 OCSP-RESPONSE file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a OCSP-RESPONSE file directly in the browser:. Just drag the file onto this browser window and drop it.

Online OCSP-RESPONSE Text Viewer

Choose your .ocsp-response file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert OCSP-RESPONSE files:

OpenSSL
See the previous paragraphs to learn more about the main application. OCSP-RESPONSE files are often referred to as OpenSSL encodeds because this type of file is primarily created or used by this software.
OpenSSL
An OCSP response file, often named with the *.OCSP-RESPONSE extension, contains data related to the revocation status of X.509 digital certificates. These files are crucial for real-time certificate validation, allowing clients (like web browsers) to quickly determine if a certificate is still valid or has been revoked. The Online Certificate Status Protocol (OCSP) is used to query an OCSP responder, which returns a signed response indicating the certificate's status. This response is then saved in an *.OCSP-RESPONSE file for future reference, optimizing validation speed and reducing reliance on Certificate Revocation Lists (CRLs). The file's internal structure typically adheres to the ASN.1 DER encoding specified in RFC 6960, containing information such as the certificate's serial number, revocation status (e.g., good, revoked, unknown), timestamps, and the responder's digital signature. This file format is classified as Security.

Technical Data for OCSP-RESPONSE File Extension

File classification:

Encoded

Related files:

crt, pem, der, cer, p7s, p7b, pfx

an ocsp-response certificate response file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with OCSP-RESPONSE files

Associate the OCSP-RESPONSE file extension with the correct application.
Update your software that should actually open certificate response files. Because only the current version supports the latest OCSP-RESPONSE file format. Search, therefore, e.g. on the manufacturer website after an available OpenSSL update.
To make sure that your OCSP-RESPONSE file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .OCSP-RESPONSE file online - secure, fast, and no downloads needed.