How do I open the .sig extension? Description of the file format and related programs

Often, bumping into the * .sig format, people are wondering what it is. The second, immediately following the first, is the question: "Than to open the extension sig?".

What is sig?

The extension sig ( English signature - signature) is the format of digital signature files . It is most often used in documents sent via e-mail. For a simple user, this format can meet once or twice, but in a commercial environment it is not uncommon.

Despite the terrible name and perhaps not quite clear explanation, sig is a text file, the same as txt or doc (docx). It contains information about the sender of the message (usually the name of the company, the name of the sender, contacts, etc.), edited by him (and therefore can contain all kinds of quotes, advertising appeals and anything at all) and is attached to the letter automatically.

How do I open the * .sig extension?

Although most people associate mail with mail and gmail, those who on a duty of service intersect with it constantly use special software packages - mail programs. They are multifunctional and, among other things, open sig-extensions. How to open a letter with a similar extension from such software? The most popular such services are:

• Microsoft Outlook - is included in the extended set of office software packages from Microsoft.
• Eudopa is a common in the West email client with only English interface. The advantage is that it works with both Windows and the "apple" MacOS.
• Mozilla ThunderBird, Opera Mail - the development of email programs from known browsers.

What program for mail to choose is a topic for a new article. If you are guided only by the criterion "than to open a sig-extension", any one, even the most simple mail client, will do.

Other programs

To create digital signatures, there is a program called "CryptoARM" - with free and paid versions. Through it, the * .sig files are opened and created. For encryption in "CryptoARM" standard Windows cryptproviders are used, so it is easy and simple. Before the method described below for a common citizen, the software has no advantages, but beginner cryptographers will be interested.

If you do not want to install a new program

To help comes the good old "Notepad" - this program, if you want, you can open even a picture (although its text encoding is unlikely to be of any use to anyone), what to say about the text file * .sig.

Than to open for free anything? "Notepad," of course! Here and digital signature files through it and open, and are created and edited. In the last two cases, the main thing is to remember to enter the name of the corresponding extension after the file name.

Finally

Curious users, of course, are encouraged to look through the Notepad, which is a * .sig file, but in fact it is not as interesting as it might seem at first. This is an auxiliary file and does not carry information for the recipient.