How you can simply encrypt information on an Android telephone – and the free app I take advantage of to do it

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ZDNET’s key takeaways

• Encrypting information on Android is simple.
• You possibly can encrypt and decrypt information with this straightforward app.
• OpenKeyChain is free to make use of and open-source.

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In the event you take cell safety severely (and you need to), you then may need to think about file encryption. I am not speaking about saving a file in an encrypted folder to tuck it away from prying eyes.

No. That is all about encrypting information which you can both depart in your gadget and look at when wanted or share with others, figuring out they are often considered solely by the recipient.

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That is made potential by the OpenKeyChain app. This app is all about encryption, and though it makes the method simple, there are some belongings you’ll have to know earlier than diving in.

Let’s just do that.

It is all about keys

In the event you’ve ever used public key encryption in your desktop to securely ship a file to somebody, you already perceive it. If not, let me clarify.

Public key encryption makes use of a key pair: one non-public and one public. The non-public key stays on the recipient’s gadget, whereas the general public secret is despatched to those that have to ship an encrypted file to them. Information encrypted with somebody’s non-public key can solely be opened by somebody who has the corresponding public key. With out that public key, there is no option to open the file.

It really works, and it really works very effectively. You possibly can have this on Android, and it isn’t practically as arduous as you may assume. Let’s have a look at the way it works.

What you may want

To do that, you may want an Android gadget, and you will want the OpenKeyChain app put in. Ensure you set up that app, and also you’re able to go.

Handle the keys

There are two belongings you’ll want/need to do. The primary is to create your personal key.

Import a public key

The subsequent factor you must do is import the general public key from somebody you need/have to ship an encrypted file to. That is the place OpenKeyChain actually shines. If the individual it is advisable to ship the encrypted file to additionally has OpenKeyChain put in, they will open their key, and you’ll merely scan the QR code related to their key pair so as to add their public key.

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If the individual does not have OpenKeyChain put in, they need to ship you their public key, and also you then need to import it from inside My Keys > + > Import from File. Find the file the individual despatched you, after which it is prepared to make use of.

Encrypting a file

Together with your key created, now you can encrypt a file. You possibly can both encrypt the file such that it will be despatched to a different person (utilizing the recipient’s public key), or you’ll be able to encrypt a file that may be saved in your Google Drive account (or your gadget), utilizing your public key, such that the general public key password (that you simply create inside the important thing creation wizard) is required to open the file.

One factor to bear in mind with saving information to your gadget. These information will finish in .gpg. If somebody will get entry to your gadget, is aware of you will have OpenKeyChain put in, and is aware of the place these information are, they will view them with out getting into your decryption password (as a result of it will mechanically match the important thing pair).

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The excellent news is which you can cover these information “in plain sight,” to make it more durable for somebody to seek out/view them. Additionally, these information can’t be considered by way of Google Drive, as a result of your public secret is saved in your gadget. Which means if somebody features entry to your Google Drive account, they will be unable to view these encrypted information.

To encrypt a file, comply with these steps.

1. Open the Encrypt/Decrypt web page

Faucet the three-line menu on the primary web page after which faucet Encrypt/Decrypt.

2. Encrypt the file

On the ensuing web page, faucet Encrypt information. You’ll then have to pick who the file is to be encrypted for. In the event you’re encrypting the file so it may be saved to Google Drive, you may use your key pair. In the event you’re encrypting it for another person, you may have to pick their public key.

Both method, faucet “Encrypt to” after which sort out the identify of the recipient. Choose the related key after which faucet “Add file(s).” Find the file you need to encrypt, after which faucet the tiny save icon close to the highest proper (to the left of the share icon).

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Choose the folder you need to home the file, give the file a reputation, after which faucet Save. Your file will likely be saved within the supposed location. You possibly can then ship the encrypted file to the recipient by no matter means you’d usually use (e-mail, messages, and many others).

Decrypting a file

That is easy. All you must do is go to Encrypt/Decrypt, faucet “Choose enter file” below Decrypt/Confirm, after which find and faucet the file. You possibly can open the file from inside OpenKeyChain, and also you’re good to go.