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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 rear door to get past the encryption. But 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 Since the moment a rear door or comparable hack exists, it will become a goal, a prize for the poor guys. It will 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 bad 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 might lock it up in a safe. The two main methods in encryption utilities parallel these options.
One sort of product simply processes files and folders, turning them into impenetrable encrypted versions of themselves. Another creates a virtual disc drive that, when open, behaves like any other drive on your system. When you lock the virtual drive, all the files that you put into it are entirely inaccessible. .
Similar to the virtual drive solution, some 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're not sure, take advantage of the 30-day free trial provided by each one of these products to have a feel for the different options.
Once you copy a file into protected storage, or make an encrypted version of it, you absolutely need to wipe out the unencrypted original. Just deleting it isn't sufficient, even if you skip the Recycle Bin, because the information still exists on disc, and data recovery utilities can often return back. .
Some encryption products avoid this issue by encrypting the document in place, literally overwriting it on disk using an encrypted version. It's more common, however, to provide safe deletion as an option. If you choose a product 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 functions because 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 information and reading around the edges of what is 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 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 every one the products accumulated here service AES. Even the ones that support other algorithms tend find this to recommend using AES.
If you are an encryption specialist, 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 must keep them secret, 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, register it in a key exchange, tattoo it on your foreheadwhatever you prefer. The other is personal, 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 program in reverse, you can create an electronic signature that shows that your document came from you and hasn't been altered. 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, advice decryption-only tool.