Cryptography Jobs

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Fixed-Price - Intermediate ($$) - Est. Budget: $500 - Posted
Hello, I want create application using Open Source cryptocurrency (DAG based) Requirement is as below. - Copy and paste from the open source - Setup program nods and implement transaction fees - make tansactions and wallet balance private - Change so transactions are not saved and if this is not possible make sure that transactions saved can not be traced to any of the wallets - Implemet our design and logos on the wallet - Test the crypto and make it " run" To avoid spamming please start your application with "Technology Name in which this open source is created" (eg. Java, ASP, PHP,Python, C, C++, node.js etc.. ). Thank you.
Skills: Cryptography Bitcoin Blockchain Node.js
Fixed-Price - Expert ($$$) - Est. Budget: $300 - Posted
Requirements: Develop, using existing .NET encryption classes or your own algorithm, a class that can perform the following: - Input - a byte array up to 1024 characters long - Signing: Sign (hash) the byte array with a PKI based algorithm using the private key and produce a digital signature of the data. The signature must be converted to base32 and the total length of the base32 final signature should not exceed 16 bytes. This is a strict requirement and is the most important. The length of the base32 final signature should not exceed 16 bytes. - Verifying: Given the signature, the original byte array and the public key, verify that the signature is valid. - The length of the encryption key should be at least 1024 bits. - The PKI algorithm to use can be any public algorithm of your choice. - The code should be developed in 100% .NET 2.0 code. No references to external C or C++ libraries should be made. Deliverables: - Fully functional .NET classes that can perform the following: - Generate a public/private key pair - Sign a message - Verify a message - Unit tests. - Sample application
Skills: Cryptography .NET Framework C# Elliptic Curve Cryptography (ECC)
Fixed-Price - Expert ($$$) - Est. Budget: $299 - Posted
Looking for an experienced front and end developer for a 3-6 month project. You will have to assemble your own team of experts for this project. This contract might include multiple sub-projects. Must be experienced in all possible aspects to creating an efficient program. Website alone will be a total of 15 pages as for the program unknown at the time. There are of specification but we have access to a website we want to somewhat resemble like. Please send me any question you might have. Programming skills required. ps. obviously we would negotiate the price. What i put down was just a random number.
Skills: Cryptography .NET Framework C# C++
Fixed-Price - Expert ($$$) - Est. Budget: $500 - Posted
Hello, We need a software or application to be designed to play the encrypted video file attached.The freelancer should be having idea about video encryption,decryption and octet-stream decryption methodologies.attached is a .app file.
Skills: Cryptography Video Streaming
Fixed-Price - Entry Level ($) - Est. Budget: $1,000 - Posted
I am looking for someone who is able to implement CurveZMQ protocol in Erlang. This work will build on the existing Erlang implementation of ZMTP protocol found here: 1. It should implement the CurveZMQ 1.0 protocol. 2. Implementation will be tested against other bindings (i.e. libcurve) to make sure it functions correctly. 3. Code clarity is preferred over performance. 4. The implementation MUST support ALL socket types specified in the ZMTP 3.1 protocol. 5. The code MUST work on Windows and Linux (i.e. not use any platform-specific libraries). This is a large project, so please only consider it if you have free time. Will NOT work with an agency - only directly with developers. Relevant references: 1. CurveZMQ 1.0 protocol: 2. ZMTP 3.1 Protocol
Skills: Cryptography Erlang TCP/IP