>> PUBLIC file

PUBLIC file format description

Many people share .public files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .public file can be edited, converted or printed with. On this page, we try to provide assistance for handling .public files.

1 filename extension(s) found in our database.

.public - OpenSSL Public Key Data

The PUBLIC data files are related to OpenSSL. The PUBLIC file is an OpenSSL Public Key Data. OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols.

Data files
- / -
OpenSSL Public Key Data related extensions:
OpenSSL Certificate Authority Data
Certificate File
Certificate Signing Request Data
Certificate File
OpenSSL Message Digest Data
Key Database File

Naturally, other applications may also use the .public file extension. Even harmful programs can create .public files. Be especially cautious with .public files coming from an unknown source!

Can't open a .public file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .public file format, then write to us!