File Extension Library

.RSA File Extension

  • Category: Misc Files

What is an .RSA file?

.RSA file extension has been classified as Misc Files.

.RSA is RSA Certificate File

File that contains an RSA digital certificate; used in public-key cryptography and enables a remote entity to be authenticated; may be used by a software program for secure communication with a remote server.

Examples of software programs that use RSA files include Mozilla Firefox and Adobe Photoshop Elements. Firefox uses them so that developers can digitally sign browser extensions (.XPI files).

List of all softwares that can open the RSA Certificate File
Mozilla Firefox
Adobe Photoshop Elements 2019
Mozilla Firefox
Mozilla Firefox
File Type 2:

Minecraft JAR Codesign File

Developer by: Mojang Category: Misc Files Format: Binary

File used by Minecraft, an open ended 3D world construction game written in the Java programming language; stored within the /META-INF/ directory of the Minecraft.jar game file and uses the filename CODESIGN.RSA; contains information that verifies the files within the .JAR file.

The CODESIGN.RSA file is also saved with CODESIGN.SF file. Neither file should be tampered with or the game may not run properly. CODESIGN.RSA was previously named MOJANG_C.DSA.

NOTE: The META-INF directory is a standard convention used by JAR files to store metadata for the archive.

List of all softwares that can open the Minecraft JAR Codesign File
Mojang Minecraft
Mojang Minecraft
Mojang Minecraft

How to Open .RSA file on different platforms

Open .RSA File on Windows

  • Right-click a .RSA
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .RSA file and Select check box "Always use this app to open .RSA files" Press "Ok"

Open .RSA File on Mac

  • Right-click (or Ctrl + Left-click) the .RSA file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .RSA File on Linux

Right click on the .RSA file, choose "Open with" and select a program from the list above

Open .RSA File on iPhone

Select a file. If you don't see an application to open the .RSA file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .RSA File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .RSA files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .RSA files

  1. You need to update the application that you normally use to open .RSA files. Only the latest version of the software supports the current .RSA file format
  2. You need to check the .RSA file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)