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Download gpg4win - Protect the content of your emails by generating encryption keys and certificates with this advanced application that packs numerous features. Learn how to use PGP encryption to send encrypted messages to anyone. Use gpg4win with Kleopatra to encrypt any message within minutes. PGP encryption can be.

Protect the content of your emails by generating encryption keys and certificates with this advanced application that packs numerous features

What's new in gpg4win 3.1.15:

• The dialog to create new keys has been simplified and makes it easier to create keys without protection. This can be disabled by setting 'enforce-passphrase-constraints' in the gpg-agent configuration. (T5181)
• Name and e-mail for new keys are now obtained through active directory if they are available. (T5181)

Gpg4win is a security software program that can encrypt and attach digital signatures to your emails and files when uploading or sending them online, in order to prevent unauthorized users from accessing your private information.

Aside from the main application, you may install a key manager for OpenPGP, X.509 and common crypto dialogs (Kleopatra), GNU privacy assistance (GPA), an Outlook plugin (GpgOL), shell extension (GpgEX) and a Claws mail-user agent (Claws-Mail).

The interface of the utility is represented by a standard window with a well-defined layout. Gpg4win supports a wide range of certificate types, including ASC, CER, CERT, DER and PEM.

You can either import them from the computer or create your own one - a personal OpenPGP key pair or X.509 key pair and certification request.

All you have to do is specify a name, email address, comment, as well as configure advanced settings when it comes to the key material (RSA or DSA) and certificate usage (e.g. signing, encryption, validity, authentication). Once you enter a password phrase and write text to be used as inter-character timing, you can create the certificate.

So, you can send the certificate via email, upload it to a directory service or create a backup, as well as view lists of your personal, trusted and other certificates, look them up on a server and use a search function when dealing with large amounts of data. Other features of Gpg4win let you create and verify checksum files, import Certificate Revocation Lists, perform a self-test, as well as configure toolbars and shortcuts.

The application runs on a moderate quantity of CPU and system memory, has a good response time and includes user documentation. No error dialogs have been shown in our tests and the program did not hang or crash. All in all, Gpg4win supplies users with the necessary means to create, import and attach certificates to emails.

Filed under

gpg4win 3.1.15

runs on:

Windows 10 32/64 bit
Windows 8 32/64 bit
Windows 7 32/64 bit
Windows Vista 32/64 bit
Windows XP 32/64 bit

file size:

28.6 MB

filename:

gpg4win-3.1.15.exe

main category:

Security

developer:

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Still, looking for more ways to add extra padding to your emails? Today, I’ll be talking about one of the most peculiar and useful mail encryption tools I’ve happen to come across. Meet Kleopatra – not the femme fatale ruler of the Nile – your very own certificate manager and Graphical User Interface for the GnuPG. What is this tool useful for? As the article’s title suggests, it will help you encrypt email messages using the OpenPGP standard. For more info about how PGP came to be and how it works, be sure to check out my article on PGP encryption. Enough babble – let’s see how to encrypt email in Kleopatra.

What exactly is Kleopatra?

Before we get around to encrypting emails, we should say a few words about our queenly certificate manager. First of all, Kleopatra is not an email client, meaning that you won’t be able to send a message. Kleopatra is a desktop repository of OpenPGP certificates and public-private keys. Yes, I know this could be construed as a manager turn-off but, luckily, Kleopatra can be easily associated with open-source email clients such as KMail.

I’ll be talking more about the PGP-compatible email solution in a future article. So, Kleopatra lets you create public-private key pairs, store and modify certificates, share said certificates with your peers – or confederates, depending on the case – and more. Please remember Kleopatra’s for storage, not for actual email communication. With this clarification in mind, let’s explore this awesome tool.

How to Encrypt Email in Kleopatra

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Are you ready to do some serious gpg4win encryption? Let’s get down to business.

Step 1. Download and install Kleopatra.

Kleopatra is a message encryption utility that’s part of a large package. This pack is called Gpg4win. Download the package from the official webpage and follow the onscreen instruction to complete the installation process.

Step 2. Set up Kleopatra.

Once the installation process is done, open Kleopatra. On the first run, Kleopatra will ask you to create a key pair (i.e., public-private key). Click on the New Key Pair button. Type in your name and associated email address and press Next to continue. The message “Creating a New Key Pair” will pop up on your screen. After a couple of seconds, a new window will appear, asking you to provide a passphrase.

Kleopatra has a built-in password strength evaluator that will show you how weak or strong your password is based on your choice of alphanumeric symbols. Go ahead and type in your passphrase and click Ok to continue.

After a couple of (more) seconds, your key pair will be created. The key pair creation wizard’s summarization screen contains a copy of your fingerprint (i.e. the shorter version of your public PGP key) and several other useful functions such as key pair backup, upload the public key to directory service, or send the public key via email.

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Step 3. Manage your certificates.

Congrats! You’ve just created your first key pair with Kleopatra. Now, before you proceed, I strongly recommend you made a local backup of your key pair. To do that, click on the key pair backup button. Press the browse file button, choose a storage folder, name it, and Ok to continue. This will create a secret key on your machine. Type in your passphrase, click ok and close the wizard.

You’re all set up to encrypt and decrypt messages using PGP. There’s one thing missing thought – the recipient. To encryptdecrypt messages from your peer or peers, you’ll need to certify his or her certificate. To do that, ask your peer to send you his PGP public key via email. Once you’ve received it, open a notepad document and copy the contents of the email.

Extra caution when you copy a PGP key – you must include everything from title (e.g. – – – – – BEGIN PGP PUBLIC KEY BLOCK – – – – -) to footer (- – – – – END PGP PUBLIC KEY BLOCK- – – – – ) and dashes. Now, once you’ve copied the recipient’s public key to a notepad document, select the text, right-click, and select Cut. Go back to Kleopatra, click on Tools, highlight Clipboard, and click on the certificate Import.

Step 4. Validating the recipient’s certificate.

In the Certify Certificate window, click the check box next to your recipient’s name (i.e., if no name was appended to the public key, this field will appear blank; you may still select it). Highlight the box next to “I have verified the fingerprint” and click Next to continue. In the following window, select “Certify only for myself”, and click on Certify to continue. You may be asked to provide your passphrase. Do that and click on ok.

Step 5. How to encrypt email in Kleopatra.

Once you’ve validated your peer’s certificate, you will be able to PGP- or SMIME-encrypt your messages. First, compose your message. Open a fresh notepad document and type in your plaintext message. When you’re done, highlight the message, right-click and select copy. Go back to Kleopatra, click on tools, select Clipboard, and click on Encrypt. Under recipients, click on the “Add recipient” button.

Don’t forget to have your OpenPGP function selected. In the next window, select your recipient, and press Ok. Your message will now be PGP encrypted. Close the encryption window, open a fresh notepad document, right-click, and hit paste.

This is your PGP-encrypted document. Use your favorite email client to send this PGP block to your peer and that’s it. Both sender and recipient can decrypt the message by using the decrypt function in Kleopatra. Just hit decrypt, select your certificate, paste the text from the email’s body, and hit the ok button to begin decryption. That’s it!

• Deep content scanning for attachments and links;
• Phishing, spear phishing and man-in-the-email attacks;
• Advanced spam filters to protect against sophisticated attacks;
• Fraud prevention system against Business Email Compromise;

Parting thoughts

Kleopatra is a very useful and free tool for sending PGP- and SMIME-encrypted messages. On top of that, it’s far safer to use for corporate comms compared to iGolder or other free-to-use resources. Again, I have to emphasize that Kleopatra is just a certificate manager and not an email client. You will need to use another transport vector to send your encrypted message across.

Of course, encrypting your emails is not enough. In a previous article, I’ve highlighted that SMIME is prone to message takeover attacks. Moreover, even PGP is vulnerable to cryptanalytical attacks. An extra layer of protection always makes sense.

Solutions like Heimdal™ Security’s Email Security can protect your assets against spam attacks, ransomware, and even some sophisticated forms of cryptanalytical attacks. As always, stay safe and shoot me an email if you have any questions about Kleopatra or PGP encryption.

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