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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 local files. .
When the FBI needed information from the San Bernardino shooter'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 comparable hack exists, it becomes a goal, a decoration for the bad guys. It will leak sooner or later. In a discussion 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 poor 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 might lock it up in a protected. The two main approaches in encryption utilities parallel those options.
One type of product simply procedures files and folders, turning them into impenetrable encrypted versions of themselves. The other creates a virtual disk that, when open, acts like any other drive on your system. When you lock the virtual drive, all the documents you put into it are completely inaccessible. .
Like the virtual drive solution, a few goods store your encrypted information in the cloud. This approach requires extreme caution, obviously. Encrypted data in the cloud has a much larger 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 the 30-day free trial provided by each of those products to have a feel for the different options.
After you copy a document into protected storage, or make an encrypted version of it, you definitely need to wipe the unencrypted original. Just deleting it isn't sufficient, even in the event that you skip the Recycle Bin, because the information still exists on disc, and data recovery utilities can often get it back. .
Some encryption products prevent this problem by encrypting the file in place, literally overwriting it on disc with an encrypted version. recommended you read It is more common, however, to offer secure deletion as an option. If you select a product that lacks this feature, you ought to 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 because the magnetic recording of information on a hard drive isn't actually digital. It's more of a waveform. In simple terms, the procedure involves nulling out the known information and reading around the edges of what is left.
An encryption algorithm is similar to a black box. Dump a document, picture, or other document into it, and you get back what seems like gibberish. Run that gibberish back via the box, using 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 products gathered here support AES. Even those that support other algorithms tend to recommend using AES.
If you're an encryption specialist, you might want another algorithm, Blowfish, perhaps, or even the Soviet government's GOST. For the average user, however, AES is just fine.
Passwords are important, and you have to 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 share it with anyone, enroll it in an integral exchange, tattoo it on your foreheadwhatever you like. Another is personal, 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 create a digital signature which proves your document read this article came from you and hasn't been altered. How Exactly To encrypt it with your private key. The fact your public key decrypts it's all of the evidence you need. PKI service is less common than support for traditional symmetric algorithms. .
If you want to talk about a document with someone and your encryption tool doesn't support PKI, there are other options for sharing. Many products enable creation of a self-decrypting executable file. You may also find that the recipient can use a complimentary, decryption-only tool.