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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 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 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 poor guys. It'll leak sooner or later. In a discussion at Black Hat this past summer, Apple's Ivan Krstic revealed 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 secret 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 methods in encryption utilities parallel those options.
One sort of product simply procedures files and folders, turning them into impenetrable encrypted versions of these. The other creates a virtual disk drive that, when open, behaves like any other drive on your system. When you lock the virtual drive, all of the files that you put into it's entirely inaccessible. .
Similar to the virtual drive solution, a few products store your encrypted information in the cloud. This strategy requires 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 really depends on how you plan to use encryption. If you are not sure, take advantage of the 30-day free trial offered by each of those products to get a feel for the different options.
After you copy a file into protected storage, or make an encrypted version of it, then you absolutely need to wipe the unencrypted original. Just deleting it isn't sufficient, even if 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 document in place, literally overwriting it on disk using an encrypted version. It is more common, though, to provide secure deletion as an option. If you choose a product 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 retrieval tools. Hardware-based forensic recovery 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 borders of what's left.
An encryption algorithm is like a black box. Dump a document, image, 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 of the products gathered here service AES. Even the ones that support other algorithms tend to recommend using AES.
If you're an encryption specialist, you may prefer another algorithm, Blowfish, possibly, or even the Soviet government's GOST. For the average user, however, AES is just fine.
Passwords are important, and you must keep them confidential, 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, enroll it in an integral exchange, tattoo it on your foreheadwhatever you like. The other is personal, and review needs to be closely guarded. If I want to send you a secret document, I simply encrypt it with your public key.
Simple! .
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Using this program in reverse, you can create an electronic signature which proves your document came from you and hasn't been altered. How Just encrypt it with your private key. The simple fact that your public key decrypts it is all the evidence you need. PKI service is less common than support for traditional symmetric algorithms. .
If you want to talk about a file 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 could also find that the recipient can use a free, decryption-only tool.