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Using a VPN is a terrific way to shield your internet traffic when you're traveling, but it is not a solution for encrypting your local 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. However, no such back door existed, and Apple refused to make one. The FBI needed to employ hackers to get into the phone.
Why wouldn't Apple help Because the moment a rear door or comparable hack is different, it will become a target, a prize for the bad guys. It will flow sooner or later. In a talk at Black Hat this past 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 them, but the poor guys can't get in either. .
Back in the day, in the event that 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 safe. The two main methods in encryption utilities parallel with 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 drive that, when open, acts like any other drive on your system. When you lock the virtual drive, each of the files that you put into it are entirely inaccessible. .
Like the virtual drive solution, a few goods store your encrypted information in the cloud. This strategy requires extreme care, obviously. Encrypted data in the cloud has a far 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 are not sure, take advantage of the 30-day free trial offered by each one of these products to have a sense of the different options.
After you copy a file into protected storage, or create an encrypted version of it, then you absolutely need to wipe the unencrypted original. Simply deleting it isn't sufficient, even if you skip the Recycle Bin, since the information still exists on disk, and data recovery utilities can often return back. .
Some encryption products avoid this problem by encrypting the file in place, literally overwriting it on disk using an encrypted version. It is more common, however, to offer secure deletion as an option. If you select something that lacks this attribute, 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 recovery 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 borders of what is left.
An encryption algorithm is like a black box. Dump a document, image, 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 settled 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 expert, you might prefer another algorithm, Blowfish, perhaps, or even the Soviet government's GOST. For the typical user, 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, register it in an integral exchange, tattoo it on your foreheadwhatever you prefer. The other is personal, and should be carefully guarded. If I want to click for more info 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 which proves your document came from you and hasn't been altered. How Exactly To encrypt it with your private key. The fact that your public best site key decrypts it's all the proof you need. PKI support is less common than service for traditional symmetric algorithms. .
If you want to share a file with someone and your encryption tool doesn't support PKI, there are other options for sharing. Many products allow creation of a self-decrypting executable file. You may also find that the recipient can use a free, decryption-only tool.