Cryptography Jobs

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Fixed-Price - Expert ($$$) - Est. Budget: $5,000 - Posted
!!NOTICE!! - do not delete post - see support ticket #14910560 Forking / copying and modifying Zcash is legal and allowed under the MIT licence (see below**) (1) The job entails making a clone / fork of Zcash with modifications. To include zk-SNARK anonymous transactions as in Zcash and all other functionality. (2) Complete a modification of the Zcash source code such that the consensus mechanism is proof-of-stake in place of the proof-of-work in Zcash. You will implement / integrate Blackcoin’s Proof of Stake protocol version 3 with a static inflation in the Zcash clone or propose an alternative proof-of-stake mechanism. (3) Complete a native Tor integration in the cloned Zcash code base such that all the nodes connects through Tor only. (4) Generate around 106 mill. coins for distribution through a swap with our current cryptocurrency Mojocoin. (5) Update graphics and build GUI wallets for Windows and Mac. Further details upon application and the details are open for discussion. Fee negotiable. **LICENCE!! Please see the licence for Zcash and the open source copying restrictions and use. Zcash is open source and free from copyright and free for anyone to copy and modify. Zcash is released under the terms of the MIT license. See COPYING for more information or see: "Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software."
Skills: Cryptography Bitcoin C++ Qt
Hourly - Expert ($$$) - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
Looking for an experienced iPhone App Developer for a project that is expected to last greater than 6 months. You will work with a team of individuals with both technological and non-technological backgrounds. This contract will include all iterations on this application. Must be experienced in Apple Xcode, mobile security, network security, server architecture. We are creating a secure, mobile application for communication for everyday health care providers to improve patient care. Please note compensation is negotiable to include possible equity within the company for all work completed on the application. We have specifications and a completed prototype which can be reviewed upon request.
Skills: Cryptography Apple Xcode Data Encoding iOS Development
Fixed-Price - Intermediate ($$) - Est. Budget: $150 - Posted
we are looking for cryptography to work with md5 hashes there 15 hashes the payment is $150 USD per hash 843a9f5e86501fd502725ca0fe22be05 first you need to pass that code (crack) so we can know you can do the job good luck
Skills: Cryptography
Fixed-Price - Expert ($$$) - Est. Budget: $1,000 - Posted
We need an expert who suggest and setup a professional encryption system for our company. Environment: mainly Windows Computers, some Debian Desktop computers and Debian 2 Servers. We prefer standard alone software or software with server running on a linux server. The workers at the company should not be able to to copy or send any data from the computer. You should suggest a very safe solution, assist us to buy it and make about 3 or more installation for us via remote control.
Skills: Cryptography Internet Security Linux System Administration Network Security
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