Cryptography Jobs

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Hourly - Intermediate ($$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
We require someone with a security background that has the ability to find the method of a certain encryption and then create a method to decrypt it. The files were extracted from a CD-ROM and the encryption might be pretty basic. The underlying files are documents. Reach me out for a sample file for you to take a crack at. In addition to the fee that we both agree upon, we would give a bonus if the task is completed within a week of awarding the project.
Skills: Cryptography
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
We are working on a Blockchain Project which is at idealization stage. We need a blockchain expert/consultant to review the concept and give a thorough technological review of best BlockChain implementation, solution architecture and related components ideal to achieve at MVP or prototype of the solution. NB: Concept note to be shared to successful bid
Skills: Cryptography Amazon EC2 Amazon Web Services Android App Development
Fixed-Price - Expert ($$$) - Est. Budget: $300 - Posted
Hello, I'm looking for a knowledgeable and smart software architect who can build a fully working Ethereum (ETH) mining pool with user login and automated payments! I am looking for long term partner who will share the profits of this pool with me. Requirements are ----------------------------------------------------------------------- - Plan on development - Daily process report - Installation document - Final installation via teamviewer for security reason (on high performance SSD Linux servers) - After one or two days test running without any problem project will be accepted Dozens of miners ready to be instantly connected, ones the pool is proven stable. ------------------------------------------------------------------------------------------------------------ I am thinking long-term and I am considering a partner in this project. I work in enterprise sales and I know how to get people on board. You are the tech person, I am the marketing and sales guy in charge of getting us money. I would offer you one time payment for the setup of mining pool in cloud, then 40% monthly profit generated from the pool fees for security maintenance and updates. No knowledge on crpytocurrencies will be waste of time. ------------------------------------------------------------------------------------------------------ Pool functionality requirements: - Worker Monitor : keeps track of online/offline workers and notifies the owner about their status - Integrated Stratum miner & VarDiff support - eMail notifications are sent to the miner and/or the pool owner on various tasks : new block found, worker offline, new payment issued - Hash rate charts for the entire pool (sum of miners) / individual miners (sum of workers) / individual workers / top 20 miners - Pool profitability estimate gives you the average ether / day / week / month and also the current price for ethereum in BTC and USD. - automatic payments / transaction ID - DDOS protection - All Ethereum miners support (qtMiner, cudaminer, eth-proxy and ethminer) - Blocks monitor - Optimized pool engine that allows miners to submit a share every 10-15 seconds
Skills: Cryptography AngularJS Bitcoin Information Architecture
Fixed-Price - Intermediate ($$) - Est. Budget: $3,000 - Posted
I need a coder to code and launch a blockchain/cryptocurrency with the following characteristics you must know the various open source licenses and take care of not infringing them you must be able to launch the blockchain compile and send me desktop wallet windows ios linux and what is needed to mine set up what is necessary for the Virtual Machine for smart contracts blockchain explorer open source the code on github the blockchain must have no sync problems provide a minimum of post launch assistance for imprevedible things. Synthesis of the characteristics i'd like the coin to have 1-multisig onchain (NEM,eth) an n of m where every n can be composed of other n of m. every n can change,add or remove one of his signatories if more than 66% of signatories vote for the change. 2-Local wallet is greatly preferred to Brainwallet 3-PoS or Poi(without transactions weight,so in pratice a PoS) or DPoS with fixed reward per block 4-COLD MINING delegating a vps like importance transfer of NEM delegate of bitshares lease forging of nxt (importance transfer is the one i like most since the payment is received on the main account,not the delegated one if i understood correctly) 5-Blockchain as a Service we'd prefer if we can have the blockchain as a service with dapps smart contracts proof of existance time stamp etc more than having the blockchain only as a means of payment 6-Self Development Fund 30% of the block rewards goes into a multisignature account given to me. (organized in a way to not create useless blockchain bloat,Dash has a nice model) 7.a-MORPH into backed usd/eur/gbp/chf etc...the concept is very similar to Steem backed dollars with a difference.Steem cannot be converted in Steem dollars,only Steem dollars can be converted to Steem. we want to enable the main coin to turn into coin backed dollars and coin backed dollars to turn into main coin. 8-decentralized asset exchange Onchain/asset issuance Onchain bitshares,nxt,(eth?) 9-fast Block time we like ethereum 12sec Ghost+Protocol we like DECOR+GHOST protocol suggested by rootstock we like the DPoS Graphene of bitshares 2.0 we also like instantsend of Dash and ZeroTime of Vcash but we feel they are somehow flawed. 10-block size increasing like the ethereum model,or max size increasing 30% every year 11-self governance(bitshares example of elected technical committee to change fee structure: fess that have to be paid by customers for individual transactions block interval: i.e. block interval, max size of block/transaction expiration parameters: i.e. maximum expiration interval witness parameters: i.e. maximum amount of witnesses (block producers) committee parameters: i.e. maximum amount of committee members witness pay: payment for each witnesses per signed block what can you do?in how much time?suggestions? amaze me! i will give more details in private.
Skills: Cryptography Bitcoin Blockchain C++
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
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