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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 regional files. .
When the FBI needed information from the San Bernardino shooter's iPhone, they asked Apple to get a rear door to get beyond the encryption. But no such back door existed, and Apple refused to create one. The FBI had to employ hackers to get into the phone.
Why wouldn't Apple help Because the moment a rear door or similar hack exists, it will become a goal, a decoration for the poor guys. It will leak sooner or later. In a talk at Black Hat this past summer, Apple's Ivan Krstic disclosed that 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 secret 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 methods in encryption utilities parallel these options.
One type of product simply processes files and folders, turning them into impenetrable encrypted versions of these. Another creates a virtual disc drive that, when open, acts like any other drive on your system. When you lock the digital drive, all of the documents you put into it's entirely inaccessible. .
Similar to the digital drive solution, some goods store your encrypted data in the cloud. This approach requires extreme care, obviously. Encrypted data in the cloud has a far bigger attack surface than encrypted data on your own PC.
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That 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 provided by each of those products to have a sense of the different options.
Once you copy a document into protected storage, or make an encrypted version of it, then you definitely need to wipe out the unencrypted original. Simply deleting it isn't sufficient, even in the event that you skip the Recycle Bin, since the information still exists on disc, and data recovery utilities can often return back. .
Some encryption products prevent this problem by encrypting the document in location, literally overwriting it on disk using an encrypted version. It's view website more common, though, to provide safe 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 information before deletion is sufficient to balk software-based retrieval tools. Hardware-based forensic retrieval functions because the magnetic recording of data 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's left.
An encryption algorithm is like a black box. Dump a document, image, or other document into it, and you get back what seems like gibberish. Run that gibberish back via the box, with 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 every one the products gathered here service AES. Even the ones that support other algorithms tend to recommend using AES.
If you are an encryption expert, you may want 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 must 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 a key exchange, tattoo it on your foreheadwhatever you prefer. The other is personal, and needs to be carefully 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 that proves your document came from you and hasn't been altered. How Just encrypt it with your private key. The simple fact your public key decrypts it's all the evidence you need. PKI support is less common than service for traditional symmetric algorithms. .
If you want to share 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.