How to encrypt a folder in android programmatically


Joinsubscribers and get a daily digest of news, geek trivia, and our feature articles. Whether you want to store sensitive data on a USB drive, securely email it, or just add an additional layer of security on your hard drive, there are a variety of ways to protect your files with a password.

There are many file-compression programs you could use, but we recommend the completely free and open-source 7-Zip. After installing 7-Zip, use it to create a new archive — either via the 7-Zip option in your Windows Explorer right-click menu or the Add button in the 7-Zip application. Any files and folders you add to your. Microsoft Office allows you to apply encryption to documents, securing them with a password.

To password protect a document in Office or later, click the File menu, click the Protect Document button in the Info section, and select Encrypt With Password. You can also fully decrypt the document in the future, removing the need for a password.

Other productivity programs may offer similar features. TrueCrypt allows you to create encrypted volumes. TrueCrypt is a very flexible encryption solution, and you can use it in a variety of ways:. Professional editions of Windows include the following two encryption features:.

There are many other tools that can be used to encrypt files, but the above methods are some of the easiest and most powerful. You could also use steganography to hide files inside other files. If you want to store passwords, you can encrypt them with a password manager like KeePass or LastPass — both allow you to attach files, although this works best with small files associated with password entries. The Best Tech Newsletter Anywhere.

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How to Zip/Unzip your file or folder in android programmatically

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how to encrypt a folder in android programmatically

How-To Geek is where you turn when you want experts to explain technology. Since we launched inour articles have been read more than 1 billion times. Want to know more?Refrain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks, name calling or inciting hatred against any community.

Help us delete comments that do not follow these guidelines by marking them offensive. Let's work together to keep the conversation civil. How to hide files and folders on Android devices without installing any third-party app How to hide files and folders on Android devices without installing any third-party app.

Having said that, users no longer have to download any random third party app from Google Play Store. In case you are looking forward to this, here's our ready-to-use-guide for you. There are times when we give our smartphone to our friends or family and there are a few things such as photos, videos and other files on our phone we want to keep out of their sight. Method 1: Create a dedicated hidden folder The first method is to create a new folder that is automatically hidden so that apps like Gallery, WhatsApp, media players, email clients, office editors, etc.

To create a hidden folder, follow the steps: 1. Open File Manager app on your smartphone. Look for the option to create a new folder. Type desired name for the folder. Add a dot. Now, transfer all the data to this folder you want to hide. Open the file manager app on your smartphone. Navigate to the folder you want to hide. Open the folder and tab on 'Create new file' option.

Now, type '. Once done, exit the file manager and restart your phone. Your folder will be hidden now. View comments Post a comment.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. If your objective is to allow the user to defend against other people stealing the user's data, you can encrypt individual files as part of how you store them.

If your objective is to hide data from the user, that is implausible. Your encryption algorithm and key will be in your app, which anyone can examine and use to get at the encrypted data. If you do not want users having access to certain pieces of data, do not put that data on the user's device.

Yes, you can encrypt and decrypt the files and folders in your sd card using java libraries. You can implement through javax. Example 1. Example 3. Example 4. Take a Look at this Example. Learn more.

How to lock folder in android ✔

How to encrypt and decrypt folder in android sdcard Ask Question. Asked 7 years, 5 months ago. Active 7 years, 5 months ago. Viewed 11k times. So How to encrypt this file in android please help me and Android encryption support MBs r not.This document describes the proper way to use Android's cryptographic facilities and includes some examples of its use.

If your app requires greater key security, use the Android Keystore system. If you're using the Android Keystore systemyou must specify a provider. In other situations, however, Android doesn't guarantee a particular provider for a given algorithm. Specifying a provider without using the Android Keystore system could cause compatibility problems in future releases. When you have the freedom to choose which algorithm to use such as when you do not require compatibility with a third-party systemwe recommend using the following algorithms:.

The following sections include snippets that demonstrates how you can complete common cryptographic operations in your app. You need to have a PrivateKey object containing the signing key, which you can generate at runtime, read from a file bundled with your app, or obtain from some other source depending on your needs.

You need to have a PublicKey object containing the signer's public key, which you might read from a file bundled with your app, extract from a certificateor obtain from some other source depending on your needs.

There are some details of the Android cryptography implementation that seem unusual but are present due to compatibility concerns.

This section discusses the ones that you'll most likely encounter. There are Cipher identifiers that include digest names, such as Cipher. The following sections describe deprecated functionality that you should no longer use in your app.

The Bouncy Castle implementations of many algorithms are deprecated. This only affects cases where you explicitly request the Bouncy Castle provider, as shown in the following example:.

As noted above, requesting a specific provider is discouraged, so if you follow that guideline, this deprecation should not affect you. Password-based encryption PBE ciphers that require an initialization vector IV can obtain it from the key, if it's suitably constructed, or from an explicitly-passed IV. If your app requests an instance of the Crypto provider, such as by calling the following method, a NoSuchProviderException occurs.

Content and code samples on this page are subject to the licenses described in the Content License. App Basics. Build your first app.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Android Enthusiasts Stack Exchange is a question and answer site for enthusiasts and power users of the Android operating system.

It only takes a minute to sign up. This is the problem with Keepsafe and other popular apps in this category. I've also wanted to try the symbolic link trick by placing the files on an ext2 formatted partition on the memory card used for link2sd and then ln -sf from the internal storage, but that doesn't work either. The media scanner exclusion works, but the files themselves are still readable on the memory card.

Is there any app, even a root requiring one, that can encrypt or hide the files as they are despite the stupid restrictions put in since Kitkat? If you want to hide, say movie files from appearing in your media player, or music files from appearing in your music player, or even photos from appearingin your gallery, or any other type of file from showing in an app except a file exploreryou can change the file extention to anything else or remove it completely.

I recommend just changing the dot ". Use file locker app. This is very helfull app for ur problem. I also use this and my problem has solved. Now I can hide my SD card file very easily.

Only file locker app can do this. Once try brothers Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered.

Hide media on external sd card, lollipop and above [closed] Ask Question. Asked 4 years ago. Active 1 year, 1 month ago. Viewed 30k times.

Rex Rex 3 3 gold badges 9 9 silver badges 26 26 bronze badges. Already done that, still leaves the files readable when connected to a PC. You could try marking the folder as "hidden" in the Windows properties dialog. Active Oldest Votes. Ash Ash 1 1 silver badge 14 14 bronze badges. It's also now open sourcealthough I don't know which repo the app is built from.

I would edit my answer, but I don't have enough reputation to add more links.


It looks like it might do the trick, but it's still alpha and hasn't been updated in 18 months. User feedback says that it's unstable and one might be unable to decrypt files. Pity, because it might have been just the thing.

Thanks for sharing though.

Rex I just installed it, and it still seems to work fine although I don't have an actual SD card, so I have no idea if that part still works.

I think most of the issues were when it was still being updated and the vault format was changing every update. Yes, i've already done that by putting the files inside a folder named like that. But the files will still be readable if you connect the phone to a laptop, and I haven't come across anything that can encrypt them without moving to internal storage.

how to encrypt a folder in android programmatically

Rex you can connect it to a computer, right click on the folder and click properties, and set the file to hidden on a computer.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

You can use Cipher for this. This class provides the functionality of a cryptographic cipher for encryption and decryption. Using these helper class you can encrypt and decrypt string in android simple way, but this will work only for below Android 7.

Blowfish with key size of bit up to bit, its considered as a better faster algorithm. Try as follows. Learn more. Asked 3 years, 5 months ago. Active 4 months ago. Viewed 61k times. Sumit Kumar. Sumit Kumar Sumit Kumar 1 1 gold badge 3 3 silver badges 14 14 bronze badges.

I think answer is already given at stackoverflow. Use this library. Active Oldest Votes. Steve Blackwell 5, 29 29 silver badges 46 46 bronze badges. Patrick R Patrick R 4, 1 1 gold badge 11 11 silver badges 22 22 bronze badges. This code has a number of serious problems and should not be used.

For example, generating the key directly from a password. IsaacPotoczny-Jones, could you tell a little detail of other apporaches? SecureRandom; import javax. Cipher; import javax.Of course, that means your phone is increasingly being used to access sensitive information—data you might want to encrypt. There are a couple of ways to approach this. Sure, a passphrase is likely to keep friends and family at bay, but it wont be sufficient to thwart a real thief.

After all, with the asking price for sensitive personal health information and personally identifiable information skyrocketing, thieves are seeing less payout possibilities from the hardware itself, and are more interested in the data these devices contain.

An Android data encryption feature has been available for a number of years, storing the keys on the device. For a time, Google even said it would go so far as to offer full-disk Android encryption by default, though performance issues read: a massive slowdown prompted a rethinking of that policy. Sookasa is a Dropbox encryption platform that protects your sensitive files on cloud services and devices, including Android.

how to encrypt a folder in android programmatically

Once complete, you can work directly from your Dropbox app, your email, or any other application to open and view encrypted files. Our Dropbox encryption is transparent, so all you need to do is sign in, and then you can open any encrypted Sookasa file securely from Dropbox or email by tapping on it. The non-option for Android file encryption: Passwords Sure, a passphrase is likely to keep friends and family at bay, but it wont be sufficient to thwart a real thief.

You can usually find the Security menu under settings, but it may differ depending on your device. Enter your PIN or password to confirm. Your device will reboot and encryption will get under way. Note: If you interrupt the Android file encryption process, you could lose all or part of your data—permanently. Once encryption is complete, your Android device will reboot, and your phone will ask you to type the password to decrypt storage. Type your PIN or password.

Your device will decrypt your data and will boot back to Android. Confirm that your device is encrypted by heading back to the Security submenu. For best results, we recommend getting oriented on your computer. From there, connect your Sookasa and Dropbox accounts. You can work from Dropbox just like you always have. To encrypt your files, simply drag them into the Sookasa folder For Android file encryption protection, download Sookasa to your Android.

You can download the application from the Google Play Store. Twitter Facebook LinkedIn Google.

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