Craig Crossman photo Craig Crossman
National Newspaper Computer Columnist

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ENCRYPTED ATTACHMENTS DECRYPTED WITH ANY BROWSER

How can you be sure your emails are safe from prying eyes? To most of us emailing mom or even sending work-related emails, security really isn't of great concern. But the ones to whom security is of great importance, sending their sensitive documents over the Internet poses an extremely high degree of risk. That's primarily because one of the Internet's strongest points happens to also be one of its greatest weaknesses: Access to the Internet is available to everyone.

There are two really big problems with sending encrypted emails to someone. The first one is getting the decryption key or password safely to the recipient. The other hurdle is making sure that the recipient has the decryption software to unscramble what you sent to them. And while the first problem can be dealt with by agreeing on the key ahead of the time, telling it to them face to face, calling them, sending it in the mail or getting it to them in a zillion other ways, it is the second problem that we're going to deal with in this column.

If you find yourself needing to send encrypted emails to a large or even open-ended number of people, it would be an almost impossible task and very expensive sending each and every one of them a copy of the decryption software. Firetrust Encrypt solves this dilemma in a novel way by using the ubiquitous browser, the application that's most widely used to access the Internet. Here's how it works.

Using the Firetrust Encrypt application, you first encrypt any kind of file or document. Encrypt scrambles the data using a 256-bit AES encryption standard and places it within a standard HTML document which is then attached to an ordinary piece of email. Being an HTML file, any ordinary web browser will be able to open the attached file. You then email it to the person for which it's intended. That person does not need any special software. All they need is the ability to receive the email. Once your contact receives the email, they then proceed to open the attached HTML document with their browser.

The browser next displays a small screen that says that the document is ready to be opened and prompts the recipient to enter in the agreed password. At that point, the browser connects to the Firetrust server at a remote location, retrieves the decryption algorithm and completes the decryption process. The completed documents contained in the attachment are now placed on the recipient¹s desktop for immediate viewing.

Since the decryption process is done entirely by Firetrust's remote server, the process will work on any recipient¹s type of computer with online access be it a Windows, Macintosh or Linux-based system, and even works behind a firewall. So basically, Firetrust Encrypt encrypts and delivers documents of any format for easy decryption using customer-administered passwords. No key management system is required. And while the Encrypt application itself is at this time only available for a Windows PC, it's nice to know that at least anyone with an Internet connection will be able to decrypt what you are sending them. This makes the Firetrust Encrypt system one of the more versatile and openly universal methods of sending encrypted files around.

Firetrust Encrypt sells for $29.95.

www.firetrust.com

Craig Crossman is a McClatchy-Tribune newspaper columnist writing about computers and technology. He also hosts the nation's longest running nationally syndicated radio talk show on computers and technology, Computer America, heard on both the Business TalkRadio Network® and the Lifestyle TalkRadio Network®, weeknights at 10PM Eastern time.  Visit his website at http://www.computeramerica.com

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