Integrate an encrypted messaging system to android app

I am developing an android app where I have integrated a simple messenger, where users can send messages to another user when they are friends. Just messages, no files. Via firebase.

I need now to implement a better version with end to end encryption of the messages, group chat function.

Maybe also the option to send pictures, videos and maybe other files.

Most important is the end to end encryption.

Android app is developed via Android Studio and Java with a php backen with mysql database.

I need the whole yource code which I have all rights on it.

Skills: Android, Coding, MySQL, PHP

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About the Employer:
( 10 reviews ) Kapfenberg, Austria

Project ID: #18997104

57 freelancers are bidding on average $732 for this job


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$800 USD in 10 days
(223 Reviews)

Greetings, I am certified Mobile Developer and can integrate a messenger along with end to end encryption. I have all the mentioned skills along with certification to prove my talent. Plus you will have all sour More

$750 USD in 10 days
(73 Reviews)

Hi. My name is Qi-Feng Jin and I am from China. I am really interested in your project so I would like you to send me a message for more discussion about your project I have been working on Android app development More

$500 USD in 10 days
(35 Reviews)

Hi, We can design and develop a simple messenger where users can send & receive messages using FIREBASE. ♦ Features: - Registration & Login, - Send & Receive messages, - Group chat, - End to end encryptions, More

$2000 USD in 60 days
(114 Reviews)

Hello Sir, I am Senior Android developer, I will Implement the better version of the group chat function. I have 8 years work experience in the IT field. I am currently working as a software developer for desktop, More

$560 USD in 10 days
(223 Reviews)

Hello, Greetings!! Yes i can integrate this according to your requirement. i am experienced in Android Ui/UX development, PHP, MySQL, JS etc. Can you share more details? Can we talk? You can check my pro More

$555 USD in 10 days
(108 Reviews)

Hi there, Similar work: [login to view URL] We are expert in ENCRYPTED MESSAGING AND MAILING SYSTEM. Please contact us so that we can show you our similar work More

$750 USD in 10 days
(111 Reviews)

How are you I am ready to start on your project and also I have a confidence to make your project I have an experience of 6 + years of programmer and also talented skill of android & iOS app development . I know More

$555 USD in 10 days
(41 Reviews)

My name is LiMing. I am a senior mobile native developer with 7+ years history. Developed a lot of mobile apps such as fitness, online grocerry, education, dating, uber apps and so on. Some of my developed project More

$555 USD in 10 days
(32 Reviews)

Hello, I have read your requirement and understood that you are looking experience Android developer for Integrate an encrypted messaging system to android app I have 6+ years experience in Android development an More

$555 USD in 15 days
(148 Reviews)

Hi I have mobile(Android&Ios) and backend(PHP, NodeJS) skill with 7+ years experience. I am very familiar with - On demand system such as UBER style booking , Delivery - Sharing , Dating - VPN for windows, macOS, More

$500 USD in 10 days
(44 Reviews)

Hello, Thanks for reviewing my proposal. I have checked your requirements. I am ready to develop android app as per requirements. I have worked on social network app, E-commerce app, booking app, webview a More

$750 USD in 10 days
(147 Reviews)

Hello, As i check this app is based on audio, video and text chat system app same like whatsapp chat system app. we need to develop replica of whatsapp or some additional features and functions such like all those More

$3888 USD in 55 days
(70 Reviews)

Hello Client, I went through your requirement of an Android Application with a simple messenger where people can share videos, images and chat also. I want to inform you that we have an in-house team of Android dev More

$722 USD in 10 days
(8 Reviews)

Hi, Hope you are doing well! I am mobile app developing expert and have experienced a lot with app development such as Android, Coding, MySQL, PHP ... This project is very interesting for me and perfect fit with my s More

$500 USD in 10 days
(16 Reviews)

Hi! My name is Igor, I can help you with app I`m Fullstack Android/Java developer with 3+ years of enterprise development Feel free to contact me any time to discuss details of project

$555 USD in 10 days
(22 Reviews)

Greetings, We are professional mobile and web application developers. We have worked with many apps that deals with JSON web services, SQLIte, dynamic UI, Audio and Video player, GPS, MAP, in app purchase. app More

$444 USD in 10 days
(104 Reviews)

Hello How are you? I am a super level php, android developer. I had develped several chat server with [login to view URL], php socket. I’d love to talk more with you, send me a message so we can chat. Best regards.

$555 USD in 10 days
(9 Reviews)

Hello, I have gone through your project details as you were looking for an application developer for an android app where I have integrated a simple messenger, where users can send messages to another user when they More

$555 USD in 10 days
(46 Reviews)

hello, Thanks for the opportunity, i have gone thought youre project requirements carefully. Pl;ease share your existing application link so i can check the system which you integrate and will implement a better More

$555 USD in 10 days
(19 Reviews)