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Front End Client for Email Server to Facilitate (end-to-end) Encryption

$3000-5000 USD

Chiuso
Pubblicato più di 8 anni fa

$3000-5000 USD

Pagato al completamento
We have an open source email server. We want to develop three front-end email clients (one for the Web, one for IOS & one for Android) to facilitate true end-to-end encryption to "automatically" encrypt the emails (and their attachments) sent between the Users through the system. The encryption process will be transparent to the Users... they will only concern themselves with entering their password or passwords... the passing of the private/public keys will be automated... and handled and maintained from each user's device. We imagine that there will be two (2) passwords: One to login to the system and one master private password known only to the user (stored on device(s)) to serve as part of the encryption algorithm unknown to the Admin of the system or hosting company... thus allowing true end-to-end with no "Trust" requirements. We want the email (and its attachments) to be encrypted "before" it leaves the User's device (PC/Mac/Phone). For the PC/Macs, we will develop a webmail interface that will use any standard "browser" (Java) to perform the necessary encryption/decryption (with no additional software download/install necessary). For the Phones, we will develop two proprietary apps (one for IOS and the other for Android) to perform the necessary encryption/decryption. The key is to utilize a web-based interface through the standard PC/Mac browser (Firefox, IE, Chrome...Safari?) to handle the local encryption for the desktops/laptops. These client apps for IOS/Android do not need to be "universal" email clients... They only needs to be developed to work really well with our system i.e., simple login using passwords and no technical setup! Encryption Concepts: Initial Connection Type: TCP or maybe VPN or TOR Data Encryption: OpenPGP, Blowfish (or AES-256) Handshake: RSA-4096 Hashing etc... ***Check Out Attached Simple Graphical Overview of Project***
Rif. progetto: 8100585

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30 proposte
Progetto a distanza
Attivo 9 anni fa

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30 freelance hanno fatto un'offerta media di $5.186 USD
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Let's discuss over freelancer Personal Message Box for the proper estimation of cost and time. I am myself developer so you will directly work with me. No mediators. No managers. No subcontractors. see my recent work for the technical expertise along with reviews & feedback on my profile page.
$4.123 USD in 56 giorni
5,0 (184 valutazioni)
9,4
9,4
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Greetings, I have read Project Description & interested to discuss further, because this is bit complex/challenging project, so please let me know, if you can schedule an online technical meeting with our team? Please drop me a message thru' PMB to start further discussion about your project, as we cannot write much on this initial message bard due to limitation of characters. Our current bid is just a ballpark estimate but once you respond us, we can then negotiate it & finalize, as we are flexible in prices. Please check out our Freelancer profile https://www.freelancer.com/u/leadconcept.html, as we have delivered many successfully projects lately and let me know, if you want to see some of our recently developed projects. Look forward to hearing from you. Regards, YK LEADconcept
$8.762 USD in 70 giorni
5,0 (107 valutazioni)
9,1
9,1
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I am a expert of encryption and decryption. I also have experiences in SMTP so that FrontEnd developing for Email will be simple job. I am good at every platform including ios, android, windows PC, Mac Desktop, so that I am a good candidate for your project. Please contact me then you can realize my skill, I will provide you perfect result.
$6.315 USD in 65 giorni
5,0 (66 valutazioni)
7,5
7,5
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Hi, I have extensive experience working on custom CMS/web applications in PHP/MySQL. I'll be happy to help you out. Cheers.
$3.888 USD in 30 giorni
5,0 (61 valutazioni)
7,4
7,4
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My team is really interested in this project as it is exactly within our scope of expertise: We are WEB application design & development experts. Working with a team who has both in house DESIGNERS and PROGRAMMERS means that you can take advantage of both: Our designers could help revise the design even in coding process, which is a GREAT benefit for any ongoing project. In short, if you need an experienced team who offers *real English* communication, beautiful design & optimized code, premium after-service, AND in time and to budget, then we are the choice. If you need something based on solely ONE of the above criteria, then we're still happy if you decide to give another freelancer a chance. Just bookmark our website and come back in case the selected freelancer can't satisfy your demands. Even if you don't go with us, avoid services who claim project of this scope could be done in "15 days low price." Chances are they omit the software planning & testing phases for the sake of reducing time & cost, which produces unsustainable codes behind and creates more distrust in this market!
$3.000 USD in 30 giorni
5,0 (16 valutazioni)
5,1
5,1
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Hello from Canada, My name is Eric, I natively and fluently speak French and English. I am hard-working, thorough and I always ensure to give the best services and results to all my clients. Please see some work and designs into my freelancer portfolio: https://www.freelancer.com/u/ericelp.html I do development, coding and designing in HTML5, CSS3, JS, PHP, ASP.NET, Java Development, Oracle, Python, and RUBY. I work onto Wordpress, Drupal, Joomla, Django and many more CMS. I will always follow the latest technology and trends. I create, develop and customize e-commerces on Magento, Drupal, WordPress, Open Cart, Prestashop, Shopify, Zen Cart and many more. I create iOS(IPhone) and Android mobile apps, I customize plugins, I work on "on page" and "off page" SEO and I write scripts when necessary. I provide webhosting, management, support and maintenance. Also, all the neccessary specifications, details and functions documents can be made for you. Business and Marketing plans are also available to help you with your needs. I am looking forward to work with you. Do not hesitate to contact me if you have any questions, need any further information, need any documents or anything else. Thanks for your time and have a great day! Eric L.
$5.263 USD in 30 giorni
4,7 (11 valutazioni)
5,6
5,6
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Hi My name is Yaroslaw, I am director of international business development at Vintage, the most awarded web-production in Ukraine (UTC+2). We understand what you're trying to build and have the neccessary experience. We've build a service for the Ministry of Finance of Ukraine, and its security was confirmed by the State Security Service of Ukraine. However it is not clear to me why do you use IREDMAIL server when you can make this service compatible with existing mail services such as GMail. The second is - despite that attacks on AES256 and Blowfish are considered to be infeasible, we can use even RSA4096 to encrypt the stuff if we're sending only the text data. More about our company: We’re top web agency in Ukraine. We have over 9 years of experience working with startups, SMB and industry leaders including Fiat, Sony Ericsson, Johnson & Johnson, Pyrex, HTC, Renault. How we're better than those developers from India who bid 5000? - Our sites win awards as the best sites in the world (International Design Awards, Golden Hammer, CSSDA, Awwwards) - We have no projects failed. Usually freelancers fail on 20-60% of projects. We do not take on projects we can’t complete - Our team consists of 27 specialists, all with MD or higher - We speak English well and are available for 5 hours in your timezone - We have code review and work by weekly sprints Our rate is $35/h. To give you exact price we'd need to make a TD. Let's schedule a call to move forward. Regards, Yaroslaw
$14.000 USD in 32 giorni
5,0 (3 valutazioni)
5,0
5,0
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I have significant work experience in mobile and website domain. I have a team of experienced developers. WORK EXPERIENCE:  ThoughtWorks, Application Developer o Over 3 years of experience in diverse fields o Specialized in the internet and mobile domain. o Developed client heavy and complex server side application. o Built mobile apps for Android, iOS and Web o Implemented of RESTful APIs to serve mobile apps. o Worked as an agile developer and helped clients to realize the benefits of these practices. I assure you good quality of work as I am a professional developer. We can have a discussion and then you can take your decision. SKILLS  Programming Languages: Java, Objective-C, JavaScript, HTML, coffeescript, PHP  Databases: MongoDB, MySQL, Neo4J  Servers: Apache Web Server (configuration knowledge for re-write rules, caching headers and name based virtual hosting), Tomcat  Domains: Internet, Mobile  Tools: Spring, Intellij IDEA, JUnit, Rhino, Google Web Toolkit (GWT)  Methodologies: TDD, Peer Programming, Continuous Integration  Operating System: Mac and Windows  Source Control: Git(GitHub)  Miscellaneous: Calatrava (cross-platform mobile development),WebServices (REST)
$5.052 USD in 30 giorni
4,8 (4 valutazioni)
4,2
4,2
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Hello Mate! I am interested in the project you posted. Their are lot of interested people here and they have lot of different things so i dont know you will reply me or not or even read my post or not but i want to let you know that we do have around 245 apps, 119 games and about 190 web based sites and softwares. I can even give you demo for it. I dont want to cheat you saying i did this and that but i want to say one word, if you will go with us you can definitely "TRUST" us. I WILL AGAIN SAY THAT I DONT KNOW THAT YOU ARE GOING TO READ ABOVE OR NOT BUT I WOULD ONLY SAY IF YOU CAN DISCUSS WITH US, YOUR PROJECT IS GOING TO BE DEFINiTE SUCCESS. Thanks devang
$5.463 USD in 35 giorni
4,5 (7 valutazioni)
4,2
4,2
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Hi, i suggest do web services on SSL (https) for all applications. Maybe we can do web services for web application and make an architecture based on server socket, this is for mobile application. Just write to me with out compromise. Maybe tomorrow can modifique to lapse bid on 120 days or less days ( maybe can update bid ). If you write me i can get you an planification detailed ( schedule of activities ).
$4.444 USD in 160 giorni
5,0 (3 valutazioni)
3,2
3,2
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To better facilitate re-use, I believe you would be better served with a Cordova-based solution. This would allow the bulk of the code to be shared between web, Android and iOS devices. If you prefer native apps anyway I can still help you with these. The bulk of my experience is in web development but I can implement native iOS and android apps. This sounds like a very exciting development opportunity that I would love to be a part of.
$5.555 USD in 60 giorni
5,0 (1 valutazione)
0,4
0,4
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A proposal has not yet been provided
$4.444 USD in 30 giorni
0,0 (0 valutazioni)
0,0
0,0
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A proposal has not yet been provided
$6.666 USD in 40 giorni
0,0 (0 valutazioni)
0,0
0,0
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Hi I have extensive experience working on large scale projects as front-end development for ecommerce and governmental platforms. I think you project is exciting and would like to be part of it.
$5.555 USD in 45 giorni
0,0 (0 valutazioni)
0,0
0,0

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Bandiera: SWITZERLAND
Switzerland
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Membro dal lug 14, 2015

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