Build Enctrypted messaging APP

I have a client that is wishing to build a peer to peer end-to-end encryption app.

They are in the first stages and looking for an experienced development team to partner with.

This will be an android based app that is able to be push to the phone through the imei. This needs to have extensive messaging and presence protocol (XMBB) with Sockets-based chat. It will be end-to-end encrypted, encoded on device and transferred to server (encrypted in transit), then transferred to final recipient. Only on end device is decoded. NOT held on server, or be able to be decoded at any process.

The app (and device once installed) will have open source encryption code open to independent review.

Double ratchet algorithm encryption protocol. CURVE25519, AES-256 and HMAC-SHA256 as primitives. (singal open source protocol)

Features -

4 sections with easy coding to do a 5th.


Remote installation (WiFi) via IMEI avail on android

Back end platform for resellers to see active subscribers/active users

Normal mode and Dark mode (themes) light and dark

Send photos within the app (vault and live photos/videos/notes)

Bubble messaging style (WhatsApp)

Able to send 'non-forwardable' msgs/photos/videos

Voice msgs, audio recording with voice changer (4 types)

Group Chats

Self destruct

Password access and fail safe

Self destruct msgs

The app needs to have full device control, authorization and permissions, being able to control updates and services.

Phone open to stormshield

Eventually the app will move from AndroidOS to PrivateOS, coding needs to be adapted to this when needed.

Target Market

High end business people and government officials.

This is just a basic understanding of the direction of the company, there will be more features once the client commits to a solid and capable dev team.

My client needs a detailed direction plan and estimated quote on the development and any examples of similar projects you have done before and/or credited cryptologists you would use/recommend within development.

Habilidades: Android, Programação C, Programação C++ , Java, Mobile App Development

Veja mais: signal messaging app, secure chat, most secure messaging app 2018, most secure messaging app 2019, encrypted messaging app iphone, hidden messaging apps, how to make an encrypted chat app, private messenger, build web base app data entry form, build bracelet web app, build text messaging website, female voice audio recording, build flash kiosk app, build simple twitter app php, build custom iphone app, build gps iphone app, build icon iphone app, build simple webview app, text messaging app java, build calendar iphone app

Acerca do Empregador:
( 0 comentários ) Alexandria, Australia

ID do Projeto: #19582519

18 freelancers estão ofertando em média $34/hora para esse trabalho


(From the Makers of Vivino,Seekmi & Dah Makan) Hello, I hope you are doing well, We are Sphinx solution, a Software Solutions and Services Company of 80+ in-house developers and designers specializing in Mobile A Mais

$25 AUD / hora
(77 Comentários)

Hi There, Thanks for your valuable time. :-) Please check below points : 1. I have a client that is wishing to build a peer to peer end-to-end encryption app. They are in the first stages and looking for an experie Mais

$25 AUD / hora
(190 Comentários)

Hello , I have similar kind of expertise and work experience. I have gone through your requirement and understand that,you are looking for highly skilled, qualified, and experience Mobile App development team for Mais

$41 AUD / hora
(175 Comentários)

Hi, Hope you are doing well! I am mobile expert and have experienced a lot with Chatting app development. This project is very interesting for me and perfect fit with my skills. I am available now and can start immedia Mais

$37 AUD / hora
(64 Comentários)

Hello, Good Day, We are working in Mobile App development, Business Branding, Web & Graphic Design, Web Development. We have talented and experience professional in our team, which includes innovative developer and d Mais

$25 AUD / hora
(98 Comentários)

Hi sir, I see you're looking for a app developer proficient in Android to complete your job! Your project reminds me of one of my pervious project called "LiveScore". It's a Android app that shows sports match resul Mais

$41 AUD / hora
(58 Comentários)

Dear sir, My resume : [login to view URL] I am Tuan Tran in Vietnam, I have 12 year in Software Industry . I have experience in PHP (laravel, ci, yii ..)) , nodejs, angularjs, react (js and native), J2EE,and mob Mais

$41 AUD / hora
(97 Comentários)

Greetings !! I have gone through your project description and I am pleased to inform you that we have developed such application Whatsapp Clone past for our previous client so i am very confident to our product to del Mais

$37 AUD / hora
(6 Comentários)

Hi, I’ve carefully gone through your job post. I have more then 8+ years experience in Mobile app development.I am very much interested in your project with all of your requirements. I feel very confident on your pro Mais

$40 AUD / hora
(19 Comentários)

Hello Greetings...!! I have read your project requirements. We are familiar with all required technologies and we have expertise resource to start with your project. Check our recent work here http://yontechsof Mais

$41 AUD / hora
(15 Comentários)

Hello , I have gone through your requirement and understand that,you are looking to develop a mobile app (Android & Ios ) In this field I have a 6+ years experience and I have worked on 500+ apps in various domain Mais

$27 AUD / hora
(8 Comentários)

Hi, I am definitely not qualified to take-up this project, both capacity wise and technically. I got the gist of the project description and I think you covered most of the important elements needed to help the develo Mais

$25 AUD / hora
(4 Comentários)

Hello, I assure 100% quality work and full time work i will provide within shorted time frame and with high quality. I read and understood your requirements as per your need i can design and develop the perfect App f Mais

$25 AUD / hora
(9 Comentários)

This is an amazing opportunity and we will be happy to work with you on this project. We can also negotiate on price. We have experience of more than 4 years on Software Consultancy, Games, Mobile, .Net, PHP, Social Mais

$25 AUD / hora
(0 Comentários)

Highly interested with your project and I'm ready to start right now. My completion rate is always 100% that I STRICTLY BITE ONLY WHICH I CAN CHEW. Please message me to discuss more!

$26 AUD / hora
(46 Comentários)

I would really like to work with you on this project if possible!! Being in the area of software development since continuous 9 years and having developed nearly all sorts of application, we as a team have expertise o Mais

$38 AUD / hora
(0 Comentários)

Hey, this is regarding your requirement. after analysis, we found that I am capable to serve you what you are looking for. We will provide you the best solution as per your requirement with very updated features. we ha Mais

$37 AUD / hora
(0 Comentários)

I have 10 years of USA work experience in both Bioinformatics and Computer Science projects. I have expertise in C, C++, C#, Java, J2EE, Javascript, [login to view URL], node.js, Perl, Python, R, Shell scripting, AWS, Azure, Mais

$50 AUD / hora
(0 Comentários)