File extension SIG. How to open sig? Pdf sig how to open

Format .sig(from English Signature— signature) — a file containing an electronic digital signature. The digital signature is attached to an email or document. How to open SIG format files depends on the original extension. If you signed PDF or JPEG, you need graphic editors; if XML or DOC/DOCX, you need text editors.

Digital signature confirms the authenticity of a text document or raster image. The technology is used to confirm documents in Rosreestr and at the State Services port. This is where most users encounter the SIG format, or more precisely, the inability to open the file with familiar programs.

How to open .sig files:

SIG on Windows: Notepad, Outlook, Crypto Pro

The easiest way to open a text document with a signature is to use a standard notepad (Notepad). The method is not suitable for documents in image formats. In addition, not all text documents open correctly.

1. Notepad- standard Notebook, which is on every Windows computer. You can open the program via Start -> Standard -> Notebook, or simply by clicking on the file RMB -> To open with… and selecting notepad there. In the program you need to click on the menu File -> Open… and select the desired document on your computer. Both editing and saving text are available.
2. Microsoft Outlook And Microsoft Outlook Express— Usually the program is already available on Windows if a full suite of office applications has been installed. If not, Outlook can be installed separately by downloading from the website products.office.com free trial version of the application. There is a mobile version for iOS and Android.
3. CryptoPro— specialized software for working with digital signatures from a large Russian company. Many programs, scripts and libraries from CryptoPro are available for free download (www.cryptopro.ru/downloads) or purchase. To download files, registration on the official website may be required.
4. CryptoARM— specialized software for working with digital signatures, also from a Russian company (www.trusted.ru). For those who work with signatures and SIG extensions on an ongoing basis, it is recommended to purchase a CryptoARM license. The program has several dozen types of licenses, depending on the method of use and version of the program. For one-time opening of documents in .sig format, you can download free 14-day trial.

If a document with the SIG extension was created as a result of signing an email, it is better to open it in Outlook. If you just need to view the contents of a document, the capabilities of a standard notepad are sufficient. To seriously work with digital signatures, you need to choose between CryptoPRO and CryptoARM - there is a free trial period to decide.

SIG on MacOS: Eudora and Mozilla Thunderbird

The Internet recommends using the QUALCOMM Eudora e-mail client for MacOS. The latest version of the program is listed as Eudora 8, optimized for Mac OS X 10.4 and higher.

When you try to go to the developer’s website www.eudora.com, you are redirected to the website of the Computer History Museum. For those who really really need it, you can find the source code of the e-mail client in the article and try to install it.

1. Mozilla Thunderbird- first free and still supported a program suitable for working with sig files. This is a free, convenient and functional e-mail client that opens letters with digital signature. Mozilla Thunderbird is a cross-platform program that works correctly on almost any device, including various versions of MacOS.

In addition to these methods, documents can be viewed online on the Rosreestr website. It works well on the Mac's built-in Safari browser. If desired, you can use any other browser (Chrome, Yandex, Opera, Mozilla).

View online on the Rosreestr website

The Rosreestr website has a service that allows you to check electronic documents. It is possible to check the signature on two types of files: Digital signature ( sig files) and Electronic documents ( xml files).

Online verification of documents with digital signature is simple:

There are two ways to display a document:

• xml only. You can download and display only the contents of the xml file received from State Services or Rosreestr. In this case, the document will be displayed, but the signature will not be verified.
• Xml and sig. If you need to not only look at the file, but also check the authenticity of the signature, you need to upload both documents in both fields. As a result, it should be written that the verification was successful, and the xml file is certified with the digital signature of an authorized official. It will be indicated separately who signed the document.

The document will open in a new window, after which you can not only view the document, but also save it or send it to print.

If the document does not open in the browser:

• To work with the Rosreestr service, it is advisable to use Internet Explorer or Safari. You can use others, but you will have to set additional settings.
• IN Google Chrome required Load insecure script or set the loading of such scripts in the settings. You also need to go to Settings chrome://settings/content and enable JavaScript loading.
• In the browser Mozilla Firefox need to press Disable protection on this page, otherwise the browser will block the script.
• Google Chrome has the ability to save an open document in the format PDF. To do this in the settings Stamps browser you need to change the printer to option Save as PDF.

Documents can take a long time to open; working online with large files requires a high-speed Internet connection.

Broderbund Sign File Graphics Format

Much less often, SIG files contain not a digital signature, but raster graphics in the Broderbund Sign File format. The format is rarely used, since it is only reproduced by software products from the manufacturer Broderbund. The format is intended for the PrintMaster and The Print Shop programs, although it can also open in other Broderbund software (but this is not certain).

IN Windows graphic files can be opened in , Broderbund The Print Shop 3.0 Deluxe or other versions of these programs.

For MacOS There are also solutions: Broderbund PrintMaster 2012 Platinum And Broderbund The Print Shop for Mac.

Such a document is found in files containing an electronic (digital) signature. There is also an abbreviated name for digital signature. You can open the SIG file in two ways: on your computer and online services. Among government agencies, one structure most actively uses the SIG file - Rosreestr. We'll tell you how to open SIG below.

General Description of the SIG Format

There are 4 types of such files (signatures):

1. Digital, used in e-commerce, government, etc. It is used to confirm the authenticity of a document and is analogous to a handwritten signature;
2. Postal – a file containing the sender’s contact information;
3. Graphic for visual materials;
4. Files written in Braille.

The name SIG comes from the abbreviation of the word “signature” - signature. Electronic or digital, it accompanies a document or letter whose contents need to be confirmed.

The idea of ​​a digital signature appeared in the late 1970s in the United States. The algorithm for its creation was developed in 1977. Then the development teams came up with their own cryptographic encryption methods to protect the signature from forgery. The secure algorithm was developed in 1984. Legislatively in Russia, GOST on digital signatures was adopted 10 years later, then updated in 2002 and 2013.

An electronic signature is inextricably linked with the concept of hashing. A hash function is a mathematical algorithm that converts an arbitrary amount of data into a 40-character string. For example, hashing the title of this article with the MD5 algorithm produces the string:

B4567551CF19AB29115096CC5A2B72C9

When hashing the number “1” using the same algorithm, the result is:

C4CA4238A0B923820DCC509A6F75849B

If the content of the information has changed during transmission, then the hash will change too. By comparing the start and end hash, changes in the document will be detected.

An electronic signature is a private key belonging to its owner, a certificate of conformity that the owner receives in a specialized center. He confirms that the signature belongs to this person. Having received the file, the recipient's program again hashes the data and compares the resulting hash with the encrypted hash from the digital signature. If the hashes match, the document is considered reliable.

How and with what to open a SIG extension file

Depends on the file type. If a file of this extension was sent as an attachment to an email, it means that it contains information about the sender, contact information, name, sometimes position and department name. In this case, the files are opened by mail services. On windows it's:

• - simplified Microsoft email service;
• - an email client with the ability to send text and voice messages;
• Microsoft Outlook 2016 is a corporate paid email service with the ability to share access and a common contact database.

How to open SIG format on Mac OS:

Another type of SIG is Broderbund software product files. This is a type of digital signature that is used for graphic images produced by company programs. Tags on posters and banners are just an extension of SIG. How to open:

• The Print Shop
• The Print View
• Print Master

Open SIG file online

You can open the SIG file online or check the accuracy of the electronic signature on the Rosreestr website. To do this you will need two files: XML and SIG. In the electronic signature verification window there is an “open” button. When clicked, the address bar or explorer opens, in which you need to specify the location of the files. On the State Services portal you can also work with SIG, open online and receive a cadastral extract. In addition, SIG is converted to pdf by the ru.pdf24.org web service.

On the computer

Before you open the SIG file on your PC, you will need to install additional software to work with digital signatures. Such programs are paid, but they have a thirty-day trial period for which you do not have to pay. SIG open:

• CryptoARM is a domestic cryptographic company that produces software and issues signature and identity certificates;
• Crypto Pro is a competing series of cryptographic programs developed by the company of the same name and distributed throughout the Russian Federation. They also have a network of centers that issue certificates of conformity (both accredited under the Federal Law and without accreditation).

When working on a computer running Windows OS, users may periodically encounter files of unknown formats that they have never worked with before. And, naturally, in this case the question arises, what program can open this or that file. In this case, we will talk about programs that allow SIG.

SIG is a file that is a digital signature and is most often attached in addition to an email or document that requires authentication.

In most cases, the SIG file contains information about the name of the sender (creator) of the document, as well as contact information that allows you to contact him. When it comes to corporate correspondence, the information contained in the SIG file can be expanded: the name of the organization, its legal address, contact details and other data.

And now that we have understood the purpose of the SIG file, we can move on to programs that allow you to work with this file.

1. Notepad

First of all, it should be said about the program that every Windows user has - This is Notepad.

This standard program supports a large number of extensions, including the SIG file.

2.Microsoft Outlook

A fairly well-known program for working with email, which, as a rule, is preferred mainly by corporate users. This solution is not free and is also only available as part of other Microsoft Office products. If you have this program on your computer, this is perhaps the most preferred tool for SIG.

3. CryptoARM

And this tool is a tool aimed at working with digital signatures and certificates. It can be used to perform both encryption and decryption of information.

CryptoARM is a paid tool, however, you will have a 30-day trial period before the program requires payment.

If you know other programs that allow you to work with SIG format files, please tell us about them in the comments.

A SIG file (Signature File) is a small text file type that can be automatically attached to the end of email messages. Quite often, the SIG format may contain the names of the senders as well as the email addresses of various users. This file extension will contain the electronic digital signature of its owner and can store the sender's contact information, name and telephone contacts. Among the active users of this file format, there are those who like to add all kinds of quotes and so on to the signed file.

The .sig file is quite often used in the field of email. To open a file that has the SIG extension, use software packages such as Microsoft Outlook and QUALCOMM Eudora. Such utilities are capable of not only opening a SIG file, but also editing it, as well as generating a .sig extension. The presence of appropriate software contributes to subsequent comfortable work with the electronic mailbox and makes it possible to open SIG files. It is worth noting that the Eudora application is optimized to work with both Windows and Mac OS.

Often, short welcome messages are placed in the contents of SIG files. In the modern world of the World Wide Web, the owner’s electronic signature is an indicator of his status and credibility, so the .sig extension has quite extensive application indicators.

In order to open a .sig file, you must adhere to the usual scheme for launching files on your computer; the main thing is to have a correctly configured program that can open and edit a SIG file.

The article describes how to sign documents (pdf, word, excel, xml, archive) using an electronic signature. Let's consider what software is needed to sign documents using an electronic signature, their pros and cons.

How to sign a file using digital signature

There are two programs with which you can sign a file using an electronic signature:

1. ViPNet CryptoFile;
2. CryptoARM.

ViPNet CryptoFile

Using this program, you can sign any file, for example: doc, xls, jpg, xml, txt, sign a digital signature declaration, archive. After signing the file will end with .sig

Pros: A free program that requires registration on the website (you will receive the key by email). It is also possible, when signing a file with an electronic signature, to use an attached signature to the file, i.e. the file and the key will be located in the same file or separately from the file.

Minuses: When signing, you can add only one electronic signature;

You can sign an EDS document by right-clicking on the file and selecting ViPNet CryptoFile -> Sign in the menu.

CryptoARM

Minuses: paid software;

Pros: you can add multiple digital signatures when signing a file.

You can sign an EDS document by right-clicking on the file and selecting CryptoARM -> Sign from the menu.

How to sign a pdf using digital signature

If you need to sign a document, for example for the tax office, read the instructions above “How to sign a file using an electronic signature”; if you need a signature with a visible part in the document, then read the instructions below.

In order to sign a pdf document using digital signature, you need software.

Pros: The electronic signature is visible in the document.

Minuses: Cost of the program (90 days free.)

You also need to have Acrobat Reader DC or Adobe Acrobat Pro installed.

Before inserting an electronic signature in a pdf document, you need to configure Acrobat Reader DC to work with the CryptoPro PDF program. To do this, in Acrobat Reader DC press Ctrl+K or go to the Edit menu -> Settings, in categories select Signatures -> where “Creation and registration" click More details, see picture:

In the “Default signing method” select CryptoPro PDF as in the picture:

We sign a pdf document with digital signature

Open the pdf document -> in the right panel click on fill and sign

In the top panel of Acrobat Reader, click on “Fill and Sign” -> “Additional Tools”

You must select the Certificates tool to add to the panel.

After clicking on Certificates, the “Apply Digital Signature” tool will appear on the panel, click on it, then select with the cursor the area where you want to put a digital signature, a window will appear with the choice of a certificate.

Select certificate -> OK -> Sign.

A digital signature in pdf looks like this:

Our pdf document is signed, in the same way you can put several signatures in one pdf file.

How to sign a Word document using digital signature

If you need to sign a document with a visible part of the signature in the document, then read the instructions below, but if you need to sign a word document and send it, for example, to the tax office, then the instructions above “How to sign a file using an electronic signature” will suit you.

In order to sign a Word document using an electronic signature, we need the CryptoPro Office Signature program.

— paid software, used for signing Wort, Excel documents.

After installation, you can immediately start signing Word documents with an electronic signature; to do this, open the Word document that needs to be signed with an electronic signature -> menu Rate -> in the Text block, click on Signature Line and select Signature Line (CRYPTO-PRO).

Let's assume that you need to insert two electronic signatures into a Word document; to do this, we perform the operation shown above twice, without signing. Since after signing with one signature, the document will become uneditable. Therefore, we insert two fields for the electronic signature.

After this, you can sign by clicking on one signature, select an electronic signature and sign, then perform the same actions with the second signature.

A word document signed with digital signature looks like this:

How to sign an Excel document using digital signature

I won’t repeat myself, in order to sign an Excel document using an electronic digital signature, you need to do everything the same as for Word, see just above.

Attention: If you need to sign an excel document with a visible part of the signature in the document, then read the instructions further “How to sign a Word document using an electronic signature”, but if you need to sign an excel document and send it, for example, to the tax office, then the instructions at the beginning of the page “How to” will suit you sign the file using digital signature.”

How to sign an agreement using digital signature

Depending on the format in which the agreement was created, read the above article How to sign a Word or PDF document.

How to sign a power of attorney using an electronic signature

Read the article above and choose the appropriate option on how to sign a power of attorney using an electronic signature.

Questions:

Is it allowed to edit a signed digital signature file?

— No, after signing the file cannot be edited, for example, if you try to edit the text signed in Word, then all signatures are deleted.

What does a document signed with digital signature look like?

— It all depends on what method you used to sign the document. If you signed the document as in the instructions at the beginning, the file will have the extension .sig. Also, the file and digital signature can be a separate file, it depends on the method of signing the file.

If you signed a pdf, word or excel document using special programs, then it is not possible to distinguish them. You need to open the document and check inside whether there is a signature or not.