Cryptred Phone Server Asterisk & Iphone APP & Softphone

This project received 11 bids from talented freelancers with an average bid price of $2173 USD.

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Project Description

Dear Freelancers,

i want to have a secure & cryprted phone server (maybe over Asterisk), which will be placed in our office. We need an Iphone APP and a Softphone, which will be instaled on the Iphones and Laptops of our stuff.

We need:
Military grade encription;
RSA 4096 bit & AES 256 bit Encryption;
Diffie-Helman (DH) Key Exchange;
MD5 & SHA512 Hash for voice integrity;
Protection Agents detects, alerts and defends against attacks ("Man-in-the-middle");
100% secure calls;

The iphone app should be used uses with 3G anytime and of course with WiFi.

All phone calls must be encrypted on the IPhone & on the Laptop before using the Internet and need to be decrypted from the Device on the other side. We need excelent voice quality - better than other other VOIP providers.

Iphone APP and Softphone must be easy to use for users - the user doesn't need to have knowledge in security or technology! Voice encryption need to be made without any need of interaction from the user!
Product must be completely safe - no secure data it is saved in the device at any time.

User must see only his contacts, just like in Skype and if his contacts are online. Every device/user has an ID on the Phone Server and the IDs can be connected with eachother, just like in Skype (Not every user is allowed to talk to every other user!)

Conference calls - over the Softphone and the Iphone App - must be possible, also with 10 people and the voice quality must be excelent.

The system must be a complete and secures (crypted) phone-system for internal and external use with costumers, partners, employess and maybe later Joint-Ventures. We need to develop it, that more than 500 users can make phone calls later in the same time - maybe also over more than one hardware-server - which are connected to eachother.

All rights - including reselling rights, copyrights and all other rights will be my rights. All source codes will be delivered to me. Server must be in our office. Make me an offer for the FULL Price of the solution. Payment will be placed as milestone here in freelancer and only released, when the FULL development is finished and all is 100% working here.

Contact me with a price and a expected time of programming, please.

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