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Using a VPN is a terrific way to protect your internet traffic when you are traveling, but it is not a solution for encrypting your regional files. .

When the FBI needed information from the San Bernardino shooter'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 employ hackers to get into the phone.

Why wouldn't Apple help Because the moment a back 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 revealed that 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 say they have no back door, and that's as it ought to be. It will mean that if you encrypt an essential document and then forget the encryption password, then you have lost it for good.

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

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

Like the digital drive solution, some goods save your encrypted data in the cloud. This strategy requires 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 actually depends on how you plan to use encryption. If you're not sure, take advantage of the 30-day free trial offered by each one of these products to get a sense of the different options.

After you copy a document into protected storage, or create an encrypted version of it, then you absolutely need to wipe out the unencrypted original. Simply deleting it isn't sufficient, even in the event that you skip the Recycle Bin, because the information still exists on disk, and data retrieval utilities can often return back. . go to the website

Some encryption products avoid this problem by encrypting the document in place, literally overwriting it on disc with an encrypted version. It's more common, however, to offer safe deletion as an option. If you choose a product that lacks this attribute, you should 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 functions since the magnetic recording of data on a hard drive isn't actually digital. It's more of a waveform. In simple terms, the procedure involves nulling out the known data and reading around the borders of what's left.

An encryption algorithm is similar to a black box. Dump a document, picture, or other file into it, and you get back what seems like gibberish. Run that gibberish back via the box, with the exact same password, and you get back the original.

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The U.S. government has settled on Advanced Encryption Standard (AES) as a standard, and every one of the merchandise gathered here service AES. Even the ones that support other algorithms tend to recommend using AES.

If you are an encryption expert, 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 secret, 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, enroll it in a key exchange, tattoo it on your More Help foreheadwhatever you prefer. The other is personal, and should be carefully guarded. If I want to send you a secret document, I simply encrypt it with your public key.

Simple! .

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Using this system in reverse, you can create an electronic signature that shows that your document came from you and hasn't been modified. How Exactly To encrypt it with your private key. The fact your public key decrypts it's all the evidence you need. PKI support 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 this article are different options for sharing. Many products allow creation of a self-decrypting executable file. You may also find that the recipient can use a complimentary, decryption-only tool.

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