SHA256 + Curve25519 C or Objective-C for Mac OS X

Need a C or Objective C program that I can run in XCode IDE on Mac that takes a passphrase and hashes it using SHA256 to derive a private key and the private key is encrypted using Curve25519 to derive the public key. It must be super fast. That is why I want it in C. It must work on Mac I must be able to run it from XCode. Upon successful delivery I might need a bit more around it.

I neither expect the SHA256 nor the Curve25519 to be programmed from scratch. There is a library for SHA256 anyhow. That part I did myself already but just want it to be combined with the Curve25519 algorithm, which is available here public domain:
I was not able to get it running on the Mac. I am posting this information because I think this will drastically reduce the effort. I am also not expecting any GUI or anything. All I want is a constant (passphrase) I can edit in the source code and then printf line output with the public key.

Habilidades: Programação C, Criptografia, Objective C

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Acerca do Empregador:
( 32 comentários ) Stuttgart, Germany

ID do Projeto: #6838615

5 freelancers are bidding on average €159 for this job


I am very proficient in c, c++. I have 15 years c++ developing experience now, and I have worked for 5 years. My work is online game developing, and mainly focus on server side, the language is c++ under linux. I used Mais

€194 EUR in 2 dias
(35 Comentários)

Hello. I've developed some objective C and cocoa project. (ex: Cable Troubleshooing, ...) And I've some knowledge about curve cryption technique. Can you share with me your detail request? Thanks.

€222 EUR in 3 dias
(25 Comentários)

C,C++,C#,, Java Programming, also I'm a system administrator with 5 years of experience in system administration and technical support for different platforms, I'm certified from Redhat, Microsoft, Vmware. I hav Mais

€83 EUR in 3 dias
(2 Comentários)

Hi, I can do the sha256 and the other encryption the only thing is I have windows so I will be using DevC or codeBlocks. I can create it there and then try to run it in Xcode, if Xcode runs basic C it should run DevC. Mais

€166 EUR in 4 dias
(2 Comentários)

Hi I am Dinh. I am senior in c and c++. I have experience in crypto. Hope to work with you ><><><><><><><><><><><><><><><><><><><><><

€100 EUR in 7 dias
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Hello, I am a iOSDevelopper for 1 year but i am looking for my first job on, I am also working in Airbus about Robotics and Mechatronics. I have good skills in Objective-C. I used to implement the Mais

€111 EUR in 3 dias
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