I am working on an android application, and I need to use encryption for one aspect of it. I am really indifferent to which algorithm I use (AES, DES, RSA, etc...). I am aware that Java has a crypto package, but I am not at all familiar with. Can someone post an example on how to do an encrypt/decrypt function?
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I want to write an app which encrypts the data and decrypts it into original data.
But I dont know how to do it.
can any one please guide me how to do it.
if possible please show me some example.
I want to know if I can create an application in android that encrypts your voice in a normal phone call and sends it to the destination where it can then be decrypted.
View 2 Replies View RelatedIs there some code snippet that show how to encrypt a password with Android and then decrypt it with php?
View 11 Replies View RelatedI want to encrypt file and store it in SD card. I want to decrypt that encrypted file and store it in sd card again. I have tried to encrypt file by opening as file stream and encrypt is but it is not working. I want some idea how to do this.
View 1 Replies View RelatedIs it possible in android framework to encrypt/decrypt voice data? What I am thinking is when a call comes in, and before user picks it up another local application is activated, it then encrypts and decrypts outgoing/incoming voice data?
View 2 Replies View RelatedWhat is the secure way to store passwords on android device?
I found same topic in "Android Developers Group". Steve918 kindly shared a sample code for it but I can not download it anymore. http://steven.bitsetters.com/articles/2007/11/20/android-password-safe/
Does anybody know how to encrypt/decrypt password using Android supporting secure algorithm?
I was wondering how to break apart .apk files in Windows to see all of it's components, edit some of the components, and put the file back together.
I have been able to open up the file to see the components using WinZip but I am unsure of how to re-"make" the .apk file again using WinZip. Is there a special option within winzip or can you just change the extension from .zip to .apk? Not sure if this matters, but the .apk files are being used within Eclipse in an emulator as of now.
I purchased an Acer Iconia A200. It took the system upgrade to Ice Cream Sandwich without any problems. After upgrading, I chose to apply the "Encrypt Tablet" feature -- and now I regret that choice. The tablet won't take any more system updates, and apparently it can't ever successfully follow through on a factory reset.
Any way to decrypt an encrypted Ice Cream Sandwich tablet -- or at least if there's a way to factory reset it successfully?
I encrypted my Samsung Galaxy Nexus several months ago and now I want to decrypt the drive and wipe the information. Nothing I have tried has worked so far.
The option to perform a factory reset through the OS has not worked. I make the selection, enter in my passphrase, the phone reboots into the green robot screen (like it was updating) then when it boots back up it asks me to enter in the encryption passphrase again and I do then it takes me to my un-wiped phone.
I have also attempted to reset it with the ClockworkMod Recovery and it will not work either. Giving an "Error mounting data!" message and similar message for the rest
I have my Nexus unlocked and rooted but it is running stock other than those two.
Does anyone know how to decrypt a stored google password on an HTC Hero?
My bro forgot his google password. The secondary email is completely defunct. The security question is completely incomprehensible. He even filled out the form to convince google that he is who he says he is... no dice.
The ONLY place the password is stored is his HTC Hero, as a saved gmail password.
My question is... is there a way to export, decrypt, or recover his gmail password on his Hero?
Is it possible to encrypt a whole external sd card(or a part of its partition i.e ext/fat32) and mount it at boot time or when ever users wants.
View 2 Replies View RelatedSecurity is top priority for me, i realise there are apps out there that can remote wipe lock etc, but if the thief is quick enough to take out the sdcard and put it in another phone the sdcards contents can still be accessed can't it?
So i would like to know if there is anyway to encrypt or protect the sdcard and the contents within it?
I am new to android. i am trying to learn and work on it.can some one help me with the following issue.
i have some fields to be encrypted and uploaded to the DB using android.
the fields which should be encrypted are DOB,Email id, Phone number and some othe numeric value.
now i am doing some formal encryption by substitution.
Can some one help me with an example to do some standerd form of encryption.
Is there a way to encrypt a file in Android 4.1?In Linix vim there is an option (vim -x) to do this, but it does not seem to be present in VimTouch.I'd like if possible to share an encrypted file between PC and phone.
View 1 Replies View RelatedI have a couple of videos, that I would like to strip the audio from, and was planning to use FLAC, and/or similar lossless codec; but before I do this, what codecs can Andriod decrypt? According to Android Central, it can decode FLAC, but only in Android 4.0 and higher, and I'm currently on Android 2.3.4 on a HTC Amaze 4G...
Is there any software I could get, in order for it to decode/decrypt FLAC correctly?
I don't mind using any other lossless audio codec, as long as Android 2.3.4 supports it...
How to do RSA encryption of byte array with base-64 encoded public key?
After reading the couple of articles( of google search ) on how to do RSA encryption in Java, found the following snippet.
CODE:.........
I have public key as a base64 encoded string (126 characters), How do i create 'PublicKey' with the encoded string and use it with Cipher.
Would it be possible for me to build an application that enables people to encrypt call coming to me with my public key and then for me to decrypt the call data at my end using my own private key. This way I basically have a more secure communication channel which I am assuming because RSA is hard to crack would be difficult to monitor.I am asking this question from a research point of view and have absolutely not considered the factor as to how computationally feasible would such an application be. I would just like to know if there is a way for me to intercept my outgoing data using any built functions.
View 2 Replies View RelatedI just encrypted my LG G2 and chose I believe a 17 character random password which includes punctuation. It's hard enough to remember and I only wish to enter it when I power on the phone. However it seems I have to enter it every time the phone locks itself. I don't want that, it's a heck of inconvenience. I just want swipe to unlock, not no pin or no pattern and only want to enter the big as password when the phone turns on. I am rooted and on the latest AT&T firmware.
View 1 Replies View RelatedI decided to encrypt my phone, URL....Anyway, after selecting encrypt phone I am presented with this..The guide says it should take around an hour and it should show me a progress bar, the image shown above is after 12 hours (as I left it going over night) and no progress bar is shown.I'm running a custom Rom of Resurrection Remix 2.2 (4.0.4)
View 1 Replies View RelatedMy work email requires the phone and external storage to be encrypted to use the Microsoft Exchange server for email.
Email worked fine while on ICS and rooted. After upgrading to JB 4.1.1 (kept root with vodoo root keeper ) the email stopped with a notice I needed to change my security settings. There was nothing I could change.
Deleted the account and when I try to set it up new- I get a message that I can't continue as the IT policy requires external encryption.
Under security> encrypt SD card>Setup data encryption Memory card (along the top) and apply (along the bottom) are grayed out.
I erased the SD card and that did not work.Tried to continue setup without an SD card- no go.
I would like to try the new feauture on ICS that let me encrypt my phone (I think it will take more or less 1 hours) and I think It will encrypt almost everything. But no idea how it works. Do u think it will be a problem for cwm recovery ? I mean usb storage, flashing ecc ecc or I ha ve to switch the phone on to use the memory card in my Nexus S ?
View 2 Replies View RelatedI decrypted msgstore.db.crypt5 with "WhatsApp Viewer" and now I have a decrypted file: msgstore.decrypted.db So I would like to know how could I encrypt to crypt5 file again.
View 2 Replies View RelatedI'm looking for an app that will allow me to encrypt folders (preferably without having to go through a third-party file manager) on my Galaxy Note 2 and Nexus 7, while possibly being able to also decrypt and view the folder/files on a Windows or Mac machine.
BoxCryptor is one that I've looked into but I'm not sure if it will allow me to encrypt folders within folders.
A little bit of background for what I need this for... I'm a medical health professional and there are times when I have sensitive data about some of my patients that I need to access via my phone/tablet/home/work computer. I don't necessarily need the folder of patient data to sync across all devices but if that could be done (say via DropBox or WebDAV, encrypted), that would be a bonus.
There are some apps on Google Play that seem like they might work:
Encryption Manager
Safe+
DroidCrypt
I have a Sprint Samsung Galaxy S4 (SPH-L720). My device is currently stock rooted running Android 4.4.2. I recently just did a factory reset and need to encrypt my device. I have my screen lock password setup and when I select to encrypt the device it shows the screen with the android gear icon for a second then shuts off. About a minute later it will turn on again on its own and boot right up to the regular lock screen. It will not encrypt and gives no error message.
The only references I have found on a Google search about encryption not working was referring to an error message saying the encryption failed and asking the user to factory reset.
I really want to encrypt my SGS2 with ANDROID 4.0.3 ICECREAM but I can't !!!
The phone start encrypting after he ask me for a secure password... rebooting and asking again for my password and surprise!!!.... the password is not match ?!?!
I repeated these steps for 3 times but the same result...the password does not match!!! ?
I have Milagrow 7.16c tablet with
Model Number MGPT09
Android ICS version 4.0.4,
BaseBand Version MW100G_Base_V300R20
Kernel version 3.0.8 weidi@brn-weidi #50
Build Number MGPT09 20121008
when i try to use the encrypt tablet, it goes to the black screen with Android Logo doing nothing for hours.
Is there any file missing in Android OS thats causing this. tell me a similar ROM for the above, so that i can try to root it with a new rom? its a 3G calling tablet.
From everything I've read I should be able to encrypt my sd card on my i747 but only option I have is to encrypt phone which I've done. Should I be able to encrypt my sd card on this? I have my camera set to save my photos etc on my sd card and would really like it encrypted. I've tried a few of the photo hide programs and they all move the photos to the internal sd card if you hide them from external sd card. If there was an app that would keep them on they drive they are located on I would worry about the sd card encryption as much.
View 1 Replies View RelatedI'm trying to use the new reboot function defined here: http://developer.android.com/reference/android/os/PowerManager.html#r. but I'm running into permissions issues even though I have the REBOOT permission in my manifest: <uses-permission android:name="android.permission.REBOOT" /> The error I see in logcat is: E/Android Runtime( 5272): java.lang.SecurityException: Neither user 10059 nor current process has android.permission.REBOOT. The REBOOT permission doesn't show up in the list of permissions for my app even though other permissions do. Is this a functionality that is still protected even though it's now a part of the public API? All of my testing so far is on a Nexus One with Android 2.2
View 3 Replies View RelatedI have met a problem with the RIL. I am using reference ril to implement SIM PIN unlock function. When i use a pin blocked SIM card, the Android Java code through exceptions and the "rild" is repeatedly disconnected and reconnected. The at command response is correct and i suppose it is right for the reference ril to report "GENERIC FAILURE" when SIM Pin is blocked. I can not figure out the reason for the error. Can somebody help me.
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