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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 local files. .
When the FBI needed information from the San Bernardino shot's iPhone, they asked Apple to get a rear door to get beyond the encryption. But no such back door existed, and Apple refused to make one. The FBI had to hire hackers to get into the phone.
Why wouldn't Apple help Because the moment a back 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 discussion at Black Hat last 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 secret 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 those options.
One type of product simply processes files and folders, turning them into impenetrable encrypted versions of these. The other creates a virtual disc drive that, when open, acts like any other drive on your system. When you lock the digital drive, all the files that you put into it are entirely inaccessible. .
Similar to the digital drive solution, a few goods store your encrypted information in the cloud. This approach demands extreme care, obviously. Encrypted information in the cloud has a much larger attack surface than encrypted data on your own PC.
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That is better It really depends on how you plan to use encryption. If you are not sure, take advantage of this 30-day free trial offered by each of those products to have a feel for the different options.
After you copy a document into protected storage, or create an encrypted version of it, you definitely need to wipe the unencrypted original. Simply deleting it isn't sufficient, even in the event that you bypass the Recycle Bin, since the information still exists on disk, and Visit Website data retrieval utilities can often return back. .
Some encryption products avoid this problem by encrypting the document in place, literally overwriting it on disk using an encrypted version. It is more common, though, to provide safe deletion as an option. If you choose 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 retrieval tools. Hardware-based forensic retrieval functions since the magnetic recording of data on a hard drive isn't actually digital. It is more of a waveform. In simple terms, the process involves nulling out the known information and reading around the edges of what's left.
An encryption algorithm is similar to a black box. Dump a document, image, or other document into it, and you get back what seems like gibberish. Run that gibberish back via the box, with 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 all the products gathered here service AES. Even those that support other algorithms 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 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 a key exchange, tattoo it on your foreheadwhatever you prefer. Another is private, and needs to be carefully 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 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 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 different 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.