RSA File Extension
RSA Certificate Format
- File Type rsa
- Popularity
- Application OpenSSL
- Category Encoded Files
What is a RSA file?
RSA Certificate Format, identified by the RSA extension, is a Encoded Files type and includes 286 files.
RSA files are supported by Windows, Mac OS and Linux. You can open a RSA file using one of 2 programs, for example OpenSSL and Firefox.
Programs that support RSA files
How to open a RSA file?
The most common reason why a RSA file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
The most popular programs for working with RSA files are OpenSSL and Firefox. To get the latest version of OpenSSL, open the website where a universal installer for all operating systems is available.
Once setup is done, your operating system should assign OpenSSL as the default app for RSA files.
Make OpenSSL the default RSA viewer
Changing the default program in Windows
- Start by right-clicking on your RSA file and selecting the "Open With" option. From there, click "Choose another app" to continue;
- Inside the popup window, scroll through the list of applications and specifically choose OpenSSL as the application to associate with your RSA file;
- Check the "Always use this app" checkbox and click "OK".
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired RSA file to access a dropdown menu of actions;
- Select "Open in application" and click "Other";
- Scroll down to the bottom of the window, where you will find the "Enable" menu. Default, "Recommended Programs" will be selected;
- In this menu, choose "All Programs" and navigate to OpenSSL. Check the box next to "Always open in app" to make it the default program.
How to edit a RSA file?
To edit RSA files, you need to install specialized software that allows you not only to open but also to modify encoded files. Online RSA editors usually provide fewer features than software created specifically for RSA Certificate Format.
List of Top RSA editors 2026
Following these criteria, we have put together a list of recommended RSA editors.
| RSA Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| OpenSSL | - | Windows, Mac OS, Linux | 4.6 out of 5 (43 reviews) |
Finding answers to RSA file problems
If you encounter issues with RSA files, don’t worry—most can be fixed with minor software adjustments. Refer to the troubleshooting tips below.
What are the signs that my RSA file is damaged?
Corrupted RSA encoded files may have one or more of the following symptoms:
- Poor performance when editing a file in OpenSSL;
- Opening or processing the file in OpenSSL or other programs causes instability or crashes in the program;
- The file shows errors when trying to open it or does not open completely;
- Unexpected expansion of the total size of the RSA file;
- Working with the file triggers the display of error messages;
Why does OpenSSL quit or crash unexpectedly?
OpenSSL crashes can be attributed to outdated software. Make sure you have installed the latest updates for developer products.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What methods can be used to repair a damaged RSA file?
Use a recovery program to open the damaged RSA file and navigate to the "Repair" menu item. Wait for the recovery process to finish, as it will automatically repair damaged encoded files.