This will help you to understand the encryption system in Android and iOS. This presentation also contain comparison of encryption in both OS.

1. Android And iOS Encryption Systems
BY GROUP 4: Riya Chauhan(141060753016)
Birju Tank((141060753017)
Naman Vaishnav((141060753018)
Dhara Patel((141060753019)
Okasha Mahi((141060753020)
DATE:17/04/2015
IEEE Seminar on Advanced Programming on Mobile Devices – I ( 3725304 )
At: GTU PG SCHOOL,GANDHINAGAR

2. Contents
• What is Encryption?-Introduction
• Encryption and Different Mobile Devices
• Android Encryption Systems
• iOS Encryption Systems
• Android vs. iOS Encryption
• Latest Implementation for Encryption in
Different Devices
• Advantages and Disadvantages
• Conclusion
• References

3. What is Encryption?-Introduction
• Security and privacy are hot topic this days, with government snooping, big
company data leaks, and hacking on rise.
• One important step you can take to protect your information is to encrypt it.
This is especially true for devices that tend to get lost or stolen such as
your cell phone.
• For many people that's worth it to keep personal information truly private
and secured. Also, mobile professionals working in certain industries--
finance and healthcare,
• For example--encryption isn't optional. All devices that store or access
consumers' personally identifiable information have to be secured or else
you're not in compliance with the law

4. Encryption and Different Mobile
Devices
• First, you might be wondering why you should even bother with encrypting your
mobile device, especially if you don’t store much or any personal information on it.
And if you already have a lock Screen with pass code (or other unlock
measure),isn’t that good enough?
• The answer is encryption does more than just bar a person from accessing
information on your cell phone, as the lock screen does.
• Encrypting your data takes it a step further. It makes the information unreadable--
in deep, useless--even if somehow a hacker got through the lock screen.
• Example: You can think of the lock screen as a lock on a door Without the key,
uninvited guests can't come in and steal all your belongings (Using the door
analogy, even if a thief comes in through the window, encryption is like creating a
mirage so all the things in your home look like they're in a super uncrackable safe.)

5. Cont..
Apple iOS
• The iOS denies access under all circumstances to many of the device’s
sensitive subsystems. Thus increasing the security of iOS based devices
since it removes the user from security decision-making process.
Android
• The Android permission system relies on the user to make all policy
decisions and decide whether an apps requested combination of permission
is safe or not.
Blackberry (BB10):
• introduces us to Blackberry Balance. Balance allows organizations to
create isolation between personal and work environments on a device
When Balance is enabled, workspace is automatically encrypted, leaving
personal environment unencrypted.
Windows Phone 8:
• WP8 uses the Unified Extensible Firmware Interface for secure boot,
ensuring devices do not load rooted or unauthorized system images.
• WP8 apps run in isolated “chambers”, which are similar to sandbox. The
data between the applications is shared in the cloud and not on the device.

6. Android Encryption Systems
Fig: Overview of the Android dm-crypt
based encryption system. The whole file
system is encrypted and the required file-
system master key is protected by a key
derived from the user’s passcode.
Before Start encrypting set your PIN
• Types of Android Encryption System
1. File-System Encryption – Dm-crypt
2. Android Key Chain
3. Backup

7. Encrypt Your Android Smartphone or
Tablet
Step:1 Tap Here
Step:2Click on Encrypt
Phone
Step:3 You’ll see a progress indicator
appear with Warning

8. Cont..
Your Device is encrypting now

9. iOS Encryption Systems
• Encrypt Your iPhone or iPad Data
• Step One: Set up a passcode to lock your device under Settings > General >
Passcode Lock.The PIN or passcode not only creates a lockscreen, it also
encrypts the iPhone data or iPad data.
• Not all of it, however. The only things that are encrypted in this dead-easy
method are your iMessages, mail messages and attachments, and data from
some apps that have data encryption.
• OS X and iOS provide a number of encryption technologies. Of these, three
APIs are available on both iOS and OS X:
1. Keychain Services API—provides secure storage for passwords, keys, and
so on
2. Cryptographic Message Syntax—provides (nonstreaming) symmetric and
asymmetric encryption and decryption
3. Certificate, Key, and Trust Services—provides cryptographic support
services and trust validation

10. Cont..
1. Set your pass code
Set “ON”Encrypt
3. Encrypted Server

11. Android vs. iOS Encryption
Apple iOS
• The iOS uses a hardware accelerated AES-256 encryption to encrypt all data stored
in the flash memory of the device.
• The iOS protects specific additional data items, such as email using an additional
layer of encryption.
• Within 10 seconds of the device locking, the decryption keys for files in device are
discarded.
Android
• The primary encryption system on Android is a file-system based
encryption system based on dm-crypt
• Android recently began offering built in encryption in 3.0, earlier versions of
android contain no encryption capability, instead to rely on islolation and
permissions to safeguard data.
• A simple jailbreak of an android phone, or theft of device’s SD card can lead to
significant loss of data.
• In this comparison always apple wins because it has tight security and much more.

12. Latest Implementation for Encryption
in Different Devices
• Apple ready to unveil its next generation of iPads, also Google has
unwrapped Android 5.0 and accompanying phones and tablets.
• Like the iOS 8 that Apple delivered in September, Google’s latest
iteration of Android — also dubbed L or Lollipop — brings a new
level of information security via automatic encryption.
• What default encryption will do: Mandatory encryption will
provide additional assurances for healthcare organizations
concerned about the data on Apple iPhones and iPads and the
various smartphones and slates that run Google’s Android, Marco
said.

13. Advantages and Disadvantages
Advantage
• Your device and your personal data are safe.
• No one can hack your personal information.
Disadvantages
• If your Encryption process is interrupted then
your data will be lost.
• In case , If you forget Passcode or PIN or
Password then you have to format it.

14. Conclusion
• To facilitate this task, I have systematically
analyzed and assessed different encryption
systems for Android and iOS platform, which
provide the opportunity to protect security
critical and confidential data. In contrast to
other mobile platforms such as iOS,
BlackBerry, or Windows Phone,Android
features many more different but iOS is the
best.

15. References
1. P. Teufl, T. Zefferer, C. Stromberger, and C. Hechenblaikner, “iOS Encryption Systems:
Deploying iOS Devices in Security-Critical Environments,” in Proceedings of the 10th
International Conference on Security and Cryptography – SECRYPT 2013, Reykjavik, 2013
2. P. Teufl , Andreas Fitzek, Daniel Hein, Alexander Marsalek, Alexander Oprisnik, Thomas
Zefferer, “ Android Encryption Systems”
[Online].Available:http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6122788
3. Ma Licui, Li Meihong, Li Lun, Du Ye, Zhang Dawei “A SDKEY-based Secure Storage and
Transmission Approach for Android Phone” in International Conference on Cyber-Enabled
Distributed Computing and Knowledge Discovery , 2014.
4. Zhaohui Wang ; Murmuria, R. ; Stavrou, A. Implementing and Optimizing an Encryption
Filesystem on Android[C], 2012 IEEE 13th International Conference on Mobile Data
Management (MDM), 2012 ,Page(s): 52 – 62.
5. Chen, Y. C. Y. and Ku, W.-S. K. W.-S. (2009). Self-Encryption Scheme for Data Security in
Mobile Devices.

16. Thanking You!
Any Questions???