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Using a VPN is a great way to shield 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 shot's iPhone, they asked Apple for a back door to get past the encryption. But no such back door existed, and Apple refused to make one. The FBI needed to hire hackers to get into the phone.
Why wouldn't Apple help Because the moment a rear door or comparable hack exists, it becomes a target, a decoration for the poor guys. It'll leak sooner or later. In a discussion at Black Hat this past 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 them, but the poor guys can't get in either. .
Back in the day, if you wanted to maintain 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 methods in encryption utilities parallel with these options.
One sort of product simply processes files and folders, turning them into impenetrable encrypted versions of these. Another creates a virtual disc that, when open, behaves like any other drive on your system. When you lock the virtual drive, each of the documents that you put into it are entirely inaccessible. .
Like the digital drive solution, some goods store your encrypted data in the cloud. This approach demands extreme caution, 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 on using encryption. If you're not sure, take advantage of the 30-day free trial offered by each one of these products to get a feel for the different options.
After you copy a document 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 in the event that you skip the Recycle Bin, because the data still exists on disc, and data recovery utilities can often get it back. .
Some encryption products avoid from this source this problem by encrypting the file in place, literally overwriting it on disk using an encrypted version. It is more common, though, to offer secure deletion as an option. If you select something that lacks this feature, you should find a free secure deletion tool to use along with it. .
Overwriting data before deletion is sufficient to balk software-based recovery tools. Hardware-based forensic retrieval works since the magnetic recording of information on a hard drive isn't actually digital. It is more of a waveform. In simple terms, the procedure involves nulling out the known data and reading around the edges 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 through the box, using the exact 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 of the products gathered here service AES. Even the ones that support other calculations tend to recommend using AES.
If you're an encryption expert, you may want another algorithm, Blowfish, possibly, or even the Soviet government's GOST. For the average user, 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 discuss it with anyone, enroll it in an integral exchange, tattoo it on your foreheadwhatever you like. The other is private, and should be carefully guarded. If I want to send you a key document, I just encrypt it with your public key.
Simple! .
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Using this program 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 support for traditional symmetric algorithms. .
If you want to talk about a file 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 could also find that the recipient can use a free, decryption-only tool.