Cryptography Jobs and Contests

Cryptography is the study of hiding information. It intersects the disciplines of engineering, computer science and mathematics. Cryptography is involved in securing passwords, access to sensitive material and to computer systems. If your business needs help with cryptography, you can hire freelance cryptography experts to fulfill your tasks. Start by posting your cryptography task today!
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Project/Contest Description Bids/Entries Skills Started Ends Price (CAD)
Need to create Crypto Currency using bitcoin or litecoin source code. I need crypto currency expert to who can create crypto currency using bitcoin or litecoin block chain source code. I also need API to communicate in PHP and Handover with full source ownership and need training how to maintain it too. 25 PHP, C Programming, Cryptography, Blockchain Jul 24, 2017 Today20h 26m $2310
Need Computer Security expert I have project to be done on computer networking. Before that you need to send me the answers of my queries in the sample attached so that I can chose the correct person. Its urgent 16 Computer Security, Software Architecture, Cisco, VoIP, Cryptography Jul 23, 2017 Today6d 12h $58
Bitcoin/Blockchain Experts Pakistan We are in the process of launching Bitcoin/Altcoin wallets, Buy/Sell, Merchant services and Bitcoin ATM facilities in Pakistan. You should be based in Pakistan and should have relevant experience. We are looking to hire project managers and developers locally. 6 Cryptography, Bitcoin, Blockchain Jul 23, 2017 Jul 23, 20175d 23h $12515
AES256 encryption between mysql/php and iOS swift Hello I am trying to implement AES256 on data stored in a database which is encrypted through php. I already have the PHP file for inserting the data into the database in plain text (simple) I also have a iOS swift app that reads the data from the database in plain text with PHP JSON What I require help with from you: - Create the lines of code in PHP that encrypts plain text to AES256 be... 22 PHP, Cryptography, MySQL, Swift Jul 21, 2017 Jul 21, 20174d 3h $211
Hire a Programmer I need someone to code a PHP program which will create an image by taking in JavaScript and hide the JavaScript inside of an image after encrypting it using AES CBC (stenography). Then code a JavaScript program, which is compatible with the PHP program, which will read the image color values, AES decrypt and write to the document. 17 PHP, Javascript, Software Architecture, Cryptography, Software Development Jul 20, 2017 Jul 20, 20173d 9h $209
Entropy analysis -- 3 I am looking for help in conducting analysis . This analysis will be based on average min entropy . please contact me for further details. 20 Computer Security, Algorithm, Cryptography, Mathematics, Statistical Analysis Jul 19, 2017 Jul 19, 20172d 5h $206
Write Blogs about Cryptocurrency I need you to write blogs about Cryptocurrency in a regular basis. NATIVE ONLY. 14 Copywriting, Blog, Cryptography, Bitcoin, Blockchain Jul 19, 2017 Jul 19, 20172d 4h $29
Write Blogs about Cryptocurrency I need you to write blogs about Cryptocurrency in a regular basis. NATIVE ONLY. 11 Copywriting, Blog, Cryptography, Bitcoin, Blockchain Jul 19, 2017 Jul 19, 20172d 4h -
AES 128 bit encryption using C# with BlockSize, Keysize, padding, initialization vectors Please find the attached pdf document, that has the description of the work to be done. Please go through it. 14 C# Programming, Cryptography Jul 19, 2017 Jul 19, 20171d 18h $528
Project for cothan Hi cothan, I noticed your profile and would like to offer you my project. We can discuss any details over chat. 7 Python, Linux, Web Security, Computer Security, Cryptography, Jul 17, 2017 Jul 17, 20173d 1h $33
Write some Software 5 We need a Java expert who can write Cryptographic functions. Developer should be well versed with RSA 2048 and SHA256 Algorithm, and should be able to make use of the same. Developer should be able to sign the PDF files using RSA 2048 private key stored in a Cryptographic device Developer should be able to sign the XML files using RSA 2048 private key stored in a cryptographic device Developer... 17 Java, Javascript, Python, JavaFX, Cryptography Jul 13, 2017 Jul 13, 2017Ended $1283
I am looking for android developer Idea is to create an android dialer app, which facilitates conference calling app. 8 Mobile Phone, Android, Cryptography, Windows Phone, Software Development Jul 13, 2017 Jul 13, 2017Ended $26
Ethereum Smart Contract for Token sale Need someone to create a smart contract to be able to start our token sale. PREVIOUS EXAMPLES/EXPERIENCE WOULD BE BENEFICIAL. - Token will be bought using Ethereum. - There will be a fixed supply of our tokens - The token sale will last one month - When a user buys our token they will recieve - 1ETH = 500 of our token - Week 1 - they will recieve 25% bonus - Week 2 - they will... 18 .NET, Contracts, Cryptography, Bitcoin Jul 12, 2017 Jul 12, 2017Ended $603
ioncube I've got a project with quite a lot of IonCube encoded files in it (not all). These files need to be decoded into the original PHP code. I've added an example file. If you can proof that you can decode this file, we talk further. 16 PHP, Apache, Cryptography, Programming Jul 12, 2017 Jul 12, 2017Ended $392
build Crypto Miner , Crypto Pool and wallet we need someone who has experience in Bitcoin, Ethereum and Litecoin server nodes etc. the Project will be as minergate. com plz read our requierment before bid We are looking for someone who can build Crypto Miner , Crypto Pool , (Send / Receive) wallet (Wallet for Digital Crypto Currency ) ***thats all coders can found libraries on github Project Description: 1- Crypto... 35 Website Design, Android, Algorithm, Cryptography, Bitcoin Jul 11, 2017 Jul 11, 2017Ended $4731
Create cryptocurrency, Wallet ,Apps - Buy /Sell Function Hi good day to All I needs to Create a cryptocurrency Systems. Ios / Android Apps Web Wallets Blockchain Explorer User Management System Buy / sell - exchange Functions. Mining Pool Merchant Account Systems Payment Gateway Integration Please Contact If you have Done Cryptocurrency Work before . Newbie Please.. Please .. Please Dont Wast time ... 14 C Programming, Linux, Cryptography, C++ Programming Jul 11, 2017 Jul 11, 2017Ended $7335
Write an Slogan and ICO White Paper for Unusual start up! I'm looking for someone with deep knowledge of blockchain, altcoins, bitcoin, Ethereum and who have successfull experience write product description texts . Need to write up a white paper. We are unusual startup associated with sex and blockchain technology. Need to сome up with a name, slogan , help with desctiption of our platform. Totally write a ICO white paper with knowledge a bloc... 21 Technical Writing, Product Descriptions, Cryptography Jul 11, 2017 Jul 11, 2017Ended $484
Entropy analysis -- 2 I am looking for help in conducting analysis . This analysis will be based on average min entropy . please contact me for further details. 20 Computer Security, Algorithm, Cryptography, Mathematics, Statistical Analysis Jul 11, 2017 Jul 11, 2017Ended $166
Edit an open-source code Hello, I would like to get a tool (kind of). There's this wallet [url removed, login to view] and it's open source. In that wallet there is an option to buy amazon gift-cards directly through that app. Thing that I don't like about it, is that the payment for the card is done from the funds that is in that wallet, it doesn't let me pay from any other wallet (say Bitcoin core). ... 16 Javascript, Cryptography, node.js, Bitcoin Jul 10, 2017 Jul 10, 2017Ended $363
Content Writer Needed for cryptocurrency based project Please read carefully, We are looking for content writer for cryptocurrency based website. You should be confident that you have some excellent English content writing skills. It would be a long term position. Should be ready for the sample work. You MUST have knowledge of crypto currency and network marketing to be able to accomplish this task. My budget can be extended for the right ca... 31 Copywriting, Articles, Cryptography, Bitcoin, Content Writing Jul 10, 2017 Jul 10, 2017Ended $140
Launch Crowdsale/ICO for Cryptocurrency project Hi, We propose to do following: - Launch Crowdsale/ICO [Use smart contract to close campaign when target funds are received]. We are looking for someone who can help us about launch ICO. We want complete knowledge regarding ICO sale. We have previous experience regarding cryptocurrency coin development but now we want complete guidance and help regarding ICO sale. We need a talented te... 6 PHP, .NET, Cryptography, node.js, Bitcoin Jul 10, 2017 Jul 10, 2017Ended $789
COMPLETE BLOCKCYPHER API INTERIGATION IN PHP CODE Need an experienced developer of PHP who completely knows blockchain, Bitcoin and know how to integrate block cypher API into my backend which is completely in PHP. Only bid if you know how to do so and has done work before and integrated that before and have the sample of with him. No new freelancer needed only experienced once is required. Start your proposal by writing "Bitcoin&qu... 12 PHP, Software Architecture, Cryptography, Bitcoin Jul 10, 2017 Jul 10, 2017Ended $210
Build ICO Project- InsurTech based INSURTECH ICO - Need blockchain developer We are looking for a partner/freelancer for our ICO We need a partner that can create the technical side to the ICO launch. »ICO project Minimum requirements: Blockchain code with CryptoCurrency tokens Website creation Creation of crypto wallet for users to buy tokens thru Smart contacts »Things not required in this project(but we may want ... 9 PHP, Website Design, Internet Marketing, Marketing, Cryptography Jul 8, 2017 Jul 8, 2017Ended $371
New Blockchain-based brokerage startup to launch an ICO - Need talented, skilled team mate Hi, We propose to do following: - Use Ethereum Homestead and Ethereum blockchain - Create a crypto-currency brokerage coin with Ethereum - Launch Crowdsale/ICO [Use smart contract to close campaign when target funds are received] We need a talented team member (partner & stakeholder) to support this effort on technical front. Technical tasks include - Research existing tokens and... 15 Javascript, Cryptography, C++ Programming, HTML, Bitcoin Jul 8, 2017 Jul 8, 2017Ended $2597
Crypto Currency Wallet App I need someone who has experience in Bitcoin, Ethereum and Litecoin server nodes etc. Our company will be offering our clients a hosted wallet for BitCoin Ethereum Litecoin Dash Ripple, ETC20 Coins, etc. We need someone who can code that as well as make it into a iOS and Android App 43 iPhone, Android, Cryptography, Bitcoin Jul 8, 2017 Jul 8, 2017Ended $1120
Create a crypto currency like bitcoin and ethereum I want to create a cryptocurrency with a premine. I will need to create a wallet for online storage and ability to have the paper wallet as well for offline storage. please contact me if you have relevant experience and tell me your experience in this specific industry. Feel free to mention which algorithm you think is best for speed and to handle a extremely large amount of coins. 21 PHP, Software Architecture, Cryptography, Bitcoin Jul 7, 2017 Jul 7, 2017Ended $1650
Build A proof of stake DAPP Hello we require the services of a freelancer to build A proof of stake decentralized App (DAPP) This Dapp will be An Asset Protection niche The successful applicant must have extensive knowledge and experience in building and working with smart contracts, smart contracts Solidify Dapps Ethereum Decentralized/distributed systems Please submit examples of any relevant previous works De... 17 Javascript, Cryptography, Bitcoin Jul 5, 2017 Jul 5, 2017Ended $34
convert Java code to Perl XSS library convert small Java code (500-1000 lines of code) to Perl XS module. the code need to be convert to C code and then combined the new c library into Perl module using Perl XS. 36 Perl, C Programming, Java, Software Architecture, Cryptography Jul 5, 2017 Jul 5, 2017Ended $1431
Top cryptocurrency/Bitcoin miners I am looking for a team of bitcoin miners 27 PHP, Website Design, Graphic Design, Cryptography, Blog Install Jul 4, 2017 Jul 4, 2017Ended $1058
Algorithm, Cryptography, Linux Expert Required Hi, I need the expert in Algorithm, Cryptography, Linux domain. Details will be shared later. 36 Linux, Algorithm, Cryptography Jan 6, 2017 Jan 6, 20171d 5h -
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