Creating a titanium module for encryption (ios and Android)

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$250 - $750 USD
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Project Description

The module should provide the following capabilities for both Android and ios:

1- Creating a diffie hellman key (private and public)
2- AES encryption (256 bits)
3- Generating public/private RSA keys
4- RSA encryption using public key
5- RSA decryption using private key
6- Signing messages with RSA
7- Verifying RSA signatures

There are javascript only libraries that do all the above (using big integers, etc: [url removed, login to view]~tjw/jsbn/) but their performance is extremely bad for production environment. The goal of this project is to create a cross platform module that can bring the native performance to Titanium for encryption. So, no javascript should be used in developing the modules (i.e. all-native-code).

There are modules in Titanium's marketplace that perform a subset of above tasks for ios but this module needs to be cross platform (ios/android) and provide all of the above functionalities.

A lot of the above functionalities is provided in ios through the security framework and Android's X509 library. The goal is to have a uniform interface for both platforms in Titanium.

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