Cryptred Phone Server Asterisk & Iphone APP & Softphone


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.

Skills: Asterisk PBX, Mobile Phone

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About the Employer:
( 28 reviews ) St. Gallen, Germany

Project ID: #1321385

11 freelancers are bidding on average $2173 for this job


I can setup a secure / encrypted VoIP system for you but under open source (gpl, mpl etc..) if interested please contact

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I can setup asterisk with SRTP for you.

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We have a large Asterisk knowledge, please see a private message.

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Hello Sir, MobiSpector is based in London, United Kingdom. We have over 18 programmers, all experts in their various respective programming disciplines. MobiSpector has additional office in India handling our global More

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I am an experienced asterisk personnel with more than 3 years of experience in ASterisk , free pbx , a2 billing and other VOIP platforms and softphones. I have installed more than 50 asterisk installation and currently More

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hello sir please chk pmb

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BOM (Bill of Materials, which is not to be provide by me) - To have Military grade encription: - at least Class 2 SSL certificate for the PBX Server, I don't think self signed cert be meet military grade, even t More

$2000 USD in 5 days
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please chk pmb

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We have worked on similar projects.

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Hi Good Morning, Hope you are well. We have review your proposal and we found that we can fit into your requirement. We have very strong expertise in building small to large scale web application. So far we h More

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