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Using a VPN is a great way to shield 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 shot's iPhone, they asked Apple for a rear door to get past 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 Because the moment a rear door or comparable hack exists, 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 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 type of product simply processes files and folders, turning them into impenetrable encrypted versions of themselves. The other creates a virtual disk drive that, when open, acts like any other drive on your system. When you lock the virtual drive, all of the documents that you put into it are completely inaccessible. .
Similar to the virtual drive solution, a few products store your encrypted information in the cloud. This approach requires extreme caution, obviously. Encrypted information in the cloud has a much bigger attack surface than encrypted data on your own PC.
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That is better It really depends on how you plan you could try this out to use 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 create an encrypted version of it, then you definitely need to wipe out the unencrypted original. Just deleting it isn't sufficient, even in the event that you skip the Recycle Bin, since the data 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 choose something that lacks this attribute, you ought to 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 information on a hard drive isn't actually digital. It is more of a waveform. In simple terms, the process involves nulling out the known data and reading around the edges of what is left.
An encryption algorithm is similar to a black box. Dump a document, image, or other file into it, and you get back what sounds like gibberish. Run that gibberish back via 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 of the products accumulated here support AES. Even those that support other algorithms tend to recommend using AES.
If you're an encryption expert, you may prefer another algorithm, Blowfish, possibly, 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 discuss it with anyone, enroll it in an integral exchange, tattoo it on your foreheadwhatever you prefer. Another is private, and should be closely 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 system in reverse, you can make an electronic signature which proves your document came from you and hasn't been modified. How Just encrypt it with your private key. The simple fact that your public key decrypts it's all of the evidence you need. PKI service is less common than support 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.