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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 shooter's iPhone, they asked Apple to get a back door to get beyond 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 Since the moment a back door or comparable hack exists, it becomes a goal, a prize for the poor guys. It'll flow sooner or later. In a talk 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 poor guys can't get in either. .
Back in the day, if you wanted to maintain 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 methods in encryption utilities parallel those options.
One type of product simply procedures files and folders, turning them into impenetrable encrypted versions of themselves. Another creates a virtual disc that, when open, behaves like any other drive on your system. When you lock the virtual drive, all of the files you put into it are completely inaccessible. .
Similar to the virtual drive solution, some products store your encrypted data in the cloud. This approach demands extreme care, obviously. Encrypted data 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 on using encryption. If you're not sure, take advantage of this 30-day free trial offered by each one of these products to have a feel for the different options.
After you copy a document into secure storage, or create an encrypted version of it, then you absolutely need to wipe the unencrypted original. Simply deleting it isn't sufficient, even if you bypass the Recycle Bin, since the information still exists on disk, and data retrieval utilities can often get it back. .
Some encryption products avoid this issue here by encrypting the document in place, literally overwriting it on disk using an encrypted version. It is more common, though, to offer secure deletion as an option. If you select something that lacks this feature, you should find a free secure deletion tool to use along with it. .
Overwriting data before deletion is sufficient Look At This to balk software-based retrieval tools. Hardware-based forensic retrieval works because 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 edges of what's left.
An encryption algorithm is useful content like a black box. Dump a document, picture, or other file into it, and you get back what seems like gibberish. Run that gibberish back via the box, using the same password, and you get back the original.
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The U.S. government has depended on Advanced Encryption Standard (AES) as a standard, and all of the merchandise gathered here support AES. Even those that support other algorithms tend to recommend using AES.
If you are an encryption specialist, you may prefer another algorithm, Blowfish, possibly, or even the Soviet government's GOST. For the typical consumer, however, AES is just fine.
Passwords are important, and you have to 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, register it in an integral exchange, tattoo it on your foreheadwhatever you like. 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 that shows that 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's all the evidence you need. PKI service is less common than service for traditional symmetric algorithms. .
If you want to share 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 may also find that the recipient can use a complimentary, decryption-only tool.