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Using a VPN is a great way to protect 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 rear door to get beyond the encryption. However, no such back door existed, and Apple refused to create 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 is different, it becomes a target, a decoration 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 poor guys can't get in either. .
Back in the day, if you wanted to keep a document key you can use a cipher to encrypt it and then burn the original. Or you could lock it up in a safe. The two main approaches in encryption utilities parallel those options.
One type of product simply processes files and folders, turning them into impenetrable encrypted versions of these. Another creates a virtual disc drive that, when open, behaves like any other drive on your system. When you lock the digital drive, all the documents that you put into it's entirely inaccessible. .
Like the digital drive solution, some products save your encrypted information in the cloud. This approach demands extreme care, obviously. Encrypted information in the cloud has a far larger attack surface than encrypted data on your own PC.
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That 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 of these products to get a feel for the different options.
Once you copy a document into protected storage, or create an encrypted version of it, then you absolutely need to wipe out the unencrypted original. Just deleting it isn't sufficient, even in the event that you bypass the Recycle Bin, because the data still exists on disk, and data recovery utilities can often get it back. .
Some encryption products avoid this problem by encrypting the document in place, literally overwriting it on disc using an encrypted version. It is more common, though, to provide safe deletion as an option. If you select something that lacks this attribute, you ought to 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 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 process involves nulling out the known information and reading around the borders of what is left.
An encryption algorithm is similar to a black box. Dump a document, picture, or other file into it, and you get back what sounds like gibberish. Run that gibberish back through 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 merchandise gathered here service AES. Even those that support other algorithms tend to recommend using AES.
If you are an encryption specialist, you may want another algorithm, Blowfish, perhaps, or the Soviet government's GOST. For the average 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 like. The other is private, and needs to 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 simple fact that your public key decrypts it is 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 different options for sharing. Many products allow creation of a self-decrypting executable file. You my response may also find that the recipient can use a complimentary, decryption-only tool.