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Using a VPN is a great way to shield your internet traffic when you are traveling, but it's not a solution for encrypting your regional files. .

When the FBI needed information from the San Bernardino shot's iPhone, they asked Apple to get a rear door to get past the encryption. But no such back door existed, and Apple refused to make one. The FBI had to hire hackers to get into the phone.

Why wouldn't Apple help Since the moment a rear door or similar hack exists, it will become a goal, a prize for the bad guys. It will leak sooner or later. In a discussion at Black Hat last summer, Apple's Ivan Krstic disclosed the company has done something similar in their cryptographic servers.

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Apple can't update thembut the bad guys can't get in either. .

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All of the products in this roundup explicitly state they have no rear door, and that is as it should be. It does mean that in the event you encrypt an essential document and then forget the encryption password, then you have lost it for good.

Back in the day, in the event that you wanted to keep a document key you can use a cipher to encrypt it and then burn the original. Or you could lock it up in a protected. The two main methods in encryption utilities parallel these options.

One sort of product simply processes files and folders, turning them into impenetrable encrypted versions of themselves. The other creates a virtual disc that, when open, acts like any other drive on your system. When you lock the virtual drive, each the files that you put into it's completely inaccessible. .

Like the digital drive solution, some products store your encrypted data in the cloud. This strategy demands extreme care, obviously. Encrypted information in the cloud has a much larger attack surface than encrypted data on your own PC.

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Which is better It really depends on how you plan on using encryption. If you are not sure, take advantage of the 30-day free trial offered by each one of those products to get a feel for the different options.

Once you copy a document into secure storage, or create an encrypted version of it, then you definitely need to wipe the unencrypted original. Just deleting it isn't sufficient, even in the event that you bypass the Recycle Bin, because the information still exists on disc, and data recovery utilities can often return back. .

Some encryption products prevent this problem by encrypting the document in location, literally overwriting it on disk using an encrypted version. It's more common, though, to provide secure deletion as an option. If you select something that lacks this feature, you ought to find a free secure deletion tool to use along with it. .

Overwriting information before deletion is sufficient to balk software-based recovery tools. Hardware-based forensic retrieval works since the magnetic recording of data on a hard drive isn't actually digital. It is more of a waveform. In simple terms, the process involves nulling out the known information and reading around the edges of what is left.

An encryption algorithm is like a black box. Dump a document, picture, or other file into it, and you get back what sounds like gibberish. Run click site that gibberish back through the box, using the same password, and you get back the original.

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The U.S. government has depended on Advanced Encryption Standard (AES) as a standard, and all the products accumulated here support AES. Even those that support other calculations tend to recommend using AES.

If you're an encryption specialist, you might prefer another algorithm, Blowfish, possibly, or the Soviet government's GOST. For the typical user, however, AES is just fine.

Passwords are important, and you must keep them confidential, right Well, not when you use Public Key Infrastructure (PKI) cryptography.

With PKI, you get two keys. One is public; you can discuss it with anyone, register it in an integral exchange, tattoo it on your foreheadwhatever you like. Another is personal, and should be carefully guarded. If I want to send you a secret document, I just encrypt it with your public key.

Simple! .

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Using this program in reverse, you can make a digital signature which proves your document came from you and hasn't been altered. How Just encrypt it with your private key. The simple fact that your public key decrypts it is all of the proof you need. PKI service is less common than service for traditional symmetric algorithms. .

If you want to share a document with someone and your encryption tool doesn't support PKI, there are different options for sharing. Many products allow creation of a self-decrypting executable file. You could also find that the recipient can use a complimentary, decryption-only tool.

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