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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 beyond the encryption. However, no such back door existed, and Apple refused to create one. The FBI needed to employ hackers to get into the phone.

Why wouldn't Apple help Since the moment a back door or similar hack is different, it becomes a goal, a decoration for the bad guys. It will flow sooner or later. In a talk at Black Hat this past summer, Apple's Ivan Krstic disclosed the company has done something similar in their cryptographic servers.

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Apple can't update them, but the bad guys can't get in either. .

All of the products in this roundup explicitly state they have no back door, and that's as it should be. It will mean that if you encrypt an essential document and then forget that the encryption password, then you've lost it for good.

Back in the day, if you wanted to maintain a document key you can use a cipher to encrypt it and then burn the original. Or you might lock it up in a safe. The two main methods in encryption utilities parallel those 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 you put into it's completely inaccessible. .

Like the digital drive solution, a few products save your encrypted information in the cloud. This strategy requires extreme care, obviously. Encrypted information in the cloud has a much bigger 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're not sure, take advantage of go to this web-site the 30-day free trial provided by each one of these products to have a sense of the different options.

After you copy a file into protected storage, or make an encrypted version of it, you definitely need to wipe out the unencrypted original. Simply deleting it isn't sufficient, even if you bypass the Recycle Bin, since the information still exists on disc, and data recovery utilities can often get it back. .

Some encryption products prevent this issue by encrypting the file 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 choose something that lacks this feature, 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 recovery 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 process involves nulling out the known information and reading around the borders of what's left.

An encryption algorithm is like a black box. Dump a document, picture, or other document into it, and you get back what seems like gibberish. Run that gibberish back through the box, with 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 every one the merchandise accumulated here support AES. Even those that support other calculations tend to recommend using AES.

If you are an encryption specialist, you may prefer another algorithm, Blowfish, perhaps, or even the Soviet government's GOST. For the average consumer, however, AES is just fine.

Passwords are important, and you have to 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 share it with anyone, enroll it in a key exchange, tattoo it on your foreheadwhatever you prefer. Another is personal, and needs to 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 a digital signature that 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 the proof you need. PKI service is less common than service for traditional symmetric algorithms. .

If you want to talk about a document with someone and your encryption application doesn't support PKI, there are other options for sharing. Many products enable creation of a self-decrypting executable file. You may also find that the recipient can use a free, decryption-only tool.