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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 local files. .
When the FBI needed information from the San Bernardino shooter's iPhone, they asked Apple to get a rear door to get past the encryption. However, no such back door existed, and Apple refused to make one. The FBI had 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 target, a decoration for the bad guys. It'll flow sooner or later. In a talk at Black Hat this past 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 them, but the bad guys can't get in either. .
Back in the day, if you wanted to maintain a document secret you could 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 those options.
One sort of product simply procedures files and folders, turning them into impenetrable encrypted versions of themselves. The other creates a virtual disc drive 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's entirely inaccessible. .
Similar to the digital drive solution, a few products store your encrypted information in the cloud. This strategy demands 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 offered by each of these products to have a feel for the different options.
Once you copy a file into secure storage, or make an encrypted version of it, then you definitely need to wipe the unencrypted original. Just deleting it isn't sufficient, even if you bypass the Recycle Bin, because the data still exists on disc, and data retrieval utilities can often get it back. .
Some encryption products avoid this problem by encrypting the document in place, literally overwriting it on disc using an encrypted version. It is more common, however, to provide secure deletion as an option. If you choose something that lacks this attribute, 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 is more of a waveform. In simple terms, the procedure 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, image, or other file 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 settled on Advanced Encryption Standard (AES) as a standard, and every one the products accumulated here support AES. Even those that support other calculations tend to recommend using AES.
If you are an encryption expert, you might want another algorithm, Blowfish, perhaps, 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 secret, right Well, not when you use Public Key Infrastructure (PKI) cryptography.
With PKI, you get two keys. One is public; you can share it with anyone, enroll it in a key exchange, tattoo it on your foreheadwhatever you prefer. Another is personal, and needs to be carefully guarded. If I want to send you a secret document, Resources I simply encrypt it with your public key.
Simple! .
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Using this program in reverse, you can create an electronic signature which proves your document came from you and hasn't been modified. How Exactly To encrypt it with your private key. The fact your public key decrypts it is all of the proof 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 other options for sharing. Many products allow creation of a self-decrypting executable file. You could also find that the recipient can use a free, decryption-only tool.