Build an encrypted android messaging application



● The system has to provide a sign up and sign in system that it uses to authenticate users upon login

● Client to client authentication should be provided

● Upon change of already established session key or RSA key pair, clients should be


● Authentication should not require user input and should be automatic


● One on one chats between clients should be provided

● Group chats should be encrypted

● Symmetric keys should be exchanged in a secure manner

● Encryption and decryption of messages should not involve the users

● Individual chat data should be stored on the client machine

● Local chat storage should be encrypted with a different secure algorithm


● The client end application should be user friendly and be easy to use to new users. A

seamless flow of operation should be implemented.

● Navigation between one on one chat and group chat menus should be smooth.


● Encryption and decryption processes should not take up more than recommended

system resources

● Latency of messages should not be experienced as IM applications are meant to be

real time applications

● System should self-synchronize on start


● The applications should support multiple languages and have different design choices for users

● Ability to delete chat history and other items can be implemented.

Skills: Android, Mobile App Development, Java, C Programming, PHP

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About the Employer:
( 0 reviews ) Dubai Silicon Oasis, United Arab Emirates

Project ID: #20094599

Awarded to:


Hi, there! I have read your description carefully and understood what you want to do. -Authentication I am sorry, but you didn't mention about any web server. For Authentication, there should be a web server that man More

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14 freelancers are bidding on average $249 for this job


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(30 Reviews)

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(6 Reviews)

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