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Using a VPN is a terrific way to protect 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 shooter's iPhone, they asked Apple to get a back door to get past the encryption. But no such back door existed, and Apple refused to create one. The FBI needed to hire hackers to get into the phone.

Why wouldn't Apple help Because the moment a back door or comparable hack exists, it becomes a goal, a decoration for the bad guys. It'll leak sooner or later. In a talk at Black Hat last summer, Apple's Ivan Krstic disclosed that the company has done something similar in their cryptographic servers.



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



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

Back in the day, if 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 safe. The two main approaches in encryption utilities parallel with those options.

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

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



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That is better It really depends on how you plan on using encryption. If you're not sure, take advantage of the 30-day free trial provided by each of these products to have a feel for the different options.

After you copy a document into protected storage, or make an encrypted version of it, then you definitely need to wipe the unencrypted original. Just deleting it isn't their explanation sufficient, even in the event that you bypass the Recycle Bin, because the information still exists on disc, and data recovery utilities can often get it back. . click for more

Some encryption products prevent this issue by encrypting the document in place, literally overwriting it on disk using an encrypted version. It is more common, though, to provide secure deletion as an option. If you choose a product 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 retrieval tools. Hardware-based forensic retrieval works because the magnetic recording of data on a hard drive isn't actually digital. It is more of a waveform. In simple terms, the procedure 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 sounds like gibberish. Run that gibberish back via the box, using 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 go to this site one of the merchandise gathered here support 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, perhaps, or the Soviet government's GOST. For the typical consumer, however, AES is just fine.

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

With PKI, you receive two keys. One is public; you can share it with anyone, enroll it in an integral exchange, tattoo it on your foreheadwhatever you like. The other is personal, and needs to be closely 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 an electronic signature that proves 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 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 free, decryption-only tool.

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