The File Extensions Database


.ASC File Extension

What is an .ASC file?

.ASC is PGP ASCII Armored File

An ASC file is an armored ASCII file used by Pretty Good Privacy (PGP), an encryption program used for secure communication. It contains a digitally signed message and may store plain-text written information, as well as binary information encoded as text. ASC files also include a key as clear-signed text, which can be verified using PGP authentication methods.

The ASC file is commonly used for posting online security notices as well as securely transmitting messages via email and text. Since ASC files can contain textual representations of binary information, they may be larger in size than the original pre-encoded file. However, this tradeoff is usually worth the overhead for verifying the source and content of transmitted information.

NOTE: In 2010, Symantec acquires PGP and was integrated into the company's Enterprise Security Group.

Programs that open PGP ASCII Armored File
Windows
PGP Desktop
PGP Desktop Email Encryption
Mozilla Thunderbird with Enigmail plug-in
Mozilla SeaMonkey with Enigmail plug-in
Gpg4win
Mac
PGP Desktop
PGP Desktop Email Encryption
Mozilla Thunderbird with Enigmail plug-in
Mozilla SeaMonkey with Enigmail plug-in
Linux
GnuPG
Mozilla Thunderbird with Enigmail plug-in
Mozilla SeaMonkey with Enigmail plug-in
File Type 2 Autodesk ASCII Export File
Developer by: Autodesk Category: Text Files Format: Text

Text file containing geometric shapes and points information; exported by various Autodesk programs; saves data in a text format, which is more compatible with other programs.

Programs that open Autodesk ASCII Export File
Windows
Autodesk AutoCAD 2018
Autodesk 3ds Max 2018
File Type 3 ActionScript Communication File
Developer by: Adobe Systems Category: Developer Files Format: Text

Script written in ActionScript, a programming language used to control Flash-based applications; contains code that is executed by the Flash Media Server hosting software; used for controlling application events, such as loading Flash applications, communicating with other servers, accessing resources, and streaming multimedia content.

ASC files may be generated by Adobe Media Encoder (included with Adobe's Creative Suite) or the free Adobe Flash Media Live Encoder. They may be used by either Flash Media Streaming Server (for simple applications) or Flash Media Interactive Server (for applications that require multiway communication).

By default, Flash Media Server executes the file main.asc when it runs an application.

Programs that open ActionScript Communication File
Windows
Adobe Flash Professional CC
Mac
Adobe Flash Professional CC
File Type 4 ASCII Text File
Category: Text Files Format: Text

Plain text file stored in the ASCII format.

File Type 5 LTspice Circuit Schematic File
Developer by: Linear Technology Category: CAD Files Format: Text

CAD file created by LTspice, a Spice III circuit simulation application; stores a circuit schematic, which contains the circuit layout, symbols (components stored in .ASY files), and connections; used for simulating a circuit in the software.

Programs that open LTspice Circuit Schematic File
Windows
Linear Technology LTspice

How to solve problems with ASC files

  • Associate the ASC file extension with the correct application. On :
    Windows: Right click on any ASC file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ASC files". Mac: Right click (or Ctrl-click) the ASC file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .ASC is PGP ASCII Armored File. Because only the current version supports the latest ASC file format. Search, therefore, e.g. on the PGP manufacturer website after an available .ASC is PGP ASCII Armored File update.
  • To make sure that your ASC file is not corrupted or virus-infected, get the file again and scan it with antivirus software.
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