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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 local files. .
When the FBI needed information from the San Bernardino shot's iPhone, they asked Apple for a back door to get beyond 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 Since the moment a back door or similar hack exists, it becomes a goal, a decoration for the bad guys. It'll leak sooner or later. In a talk 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 thembut the bad guys can't get in either. .
Back in the day, in the event that 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 methods in encryption utilities parallel with these options.
One sort of product simply procedures files and folders, turning them into impenetrable encrypted versions of themselves. The other creates a virtual disk drive that, when open, acts like any other drive on your system. When you lock the digital drive, each the files you put into it's completely inaccessible. .
Similar to the virtual drive solution, some products store your encrypted information in the cloud. This strategy requires 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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Which is better It really depends on how you plan on using encryption. If you are not sure, take advantage of this 30-day free trial provided by each of these products to get 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 out the unencrypted original. Just deleting it isn't sufficient, even if you skip the Recycle Bin, because the data still exists on disc, and data retrieval utilities can often get it back. .
Some encryption products prevent this problem by encrypting the document in location, literally overwriting it on disk with an encrypted version. It's more common, however, 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 information before deletion is sufficient to balk software-based recovery tools. Hardware-based forensic recovery works because the magnetic recording of information on a hard drive isn't actually digital. It's more of a waveform. In simple terms, the process involves nulling out the known data and reading around the edges of what is left.
An encryption algorithm is similar to a black box. Dump a document, image, or other file into it, and Discover More 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 depended on Advanced Encryption Standard (AES) as a standard, and all of the merchandise accumulated here service AES. Even those that support other algorithms tend to recommend using AES.
If you are an encryption specialist, you might want another algorithm, Blowfish, perhaps, or the Soviet government's GOST. For the average consumer, 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 share it with anyone, register it in a key exchange, tattoo it on your foreheadwhatever you like. Another is personal, and 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 make an electronic signature that shows that your document came from you and hasn't been modified. How Just encrypt it with your private key. The fact your public key decrypts it is all the proof you need. PKI support is less common than support for traditional symmetric algorithms. .
If you want to share a document with someone and your encryption application doesn't support PKI, there are different options for sharing. Many products enable creation of a self-decrypting executable file. You may also find that the recipient can use a free, decryption-only tool.