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Using a VPN is a great 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 for a rear door to get past the encryption. But 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 rear door or similar hack exists, it will become a goal, a decoration for the bad guys. It'll flow sooner or later. In a discussion at Black Hat last summer, Apple's Ivan Krstic disclosed the company has done something similar in their cryptographic servers.
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Apple can't update them, but the bad guys can't get in either. .
Back in the day, in the event that 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 approaches in encryption utilities parallel with these options.
One type of product simply processes files and folders, turning them into impenetrable encrypted versions of themselves. Another creates a virtual disk drive that, when open, acts like any other drive on your system. When you lock the digital drive, all of the documents that you put into it are entirely inaccessible. .
Similar to the virtual drive solution, some products store your encrypted data in the cloud. This approach 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 actually depends on how you plan on using encryption. If you are 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.
Once you copy a document into secure storage, or make an encrypted version of it, you definitely need to wipe the unencrypted original. click here to find out more Just deleting it isn't sufficient, even in the event that you bypass the Recycle Bin, because the information 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's more common, however, click here for more to provide secure deletion as an option. If you choose something 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 retrieval functions since the magnetic recording of data 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's left.
An encryption algorithm is like a black box. Dump a document, picture, or other document 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 support 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, perhaps, or the Soviet government's GOST. For the average consumer, 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 get two keys. One is public; you can discuss it with anyone, register it in an integral exchange, tattoo it on your foreheadwhatever you like. The other is private, 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 a digital signature which 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 of the evidence you need. PKI support is less common than service for traditional symmetric algorithms. .
If you want to talk about a document with someone and your encryption application doesn't support PKI, there are other options for sharing. Many products allow creation of a self-decrypting executable file. You may also find that the recipient can use a free, decryption-only tool.