Cryptography Jobs

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Hourly - Expert ($$$) - Est. Time: 3 to 6 months, Less than 10 hrs/week - Posted
We are developing a specialised network and blockchain to provide access to people’s information while also providing a place to store synchronised personal data. Our medallion is a mini computer that not only stores synchronised data to the network is it also used to verify data from professionals and to assist with managing specific types of expenditure. We need a blockchain technologist to help. We don’t know which blockchain platform to use yet but we are looking at: http://www.multichain.com/ https://www.walletbuilders.com/ https://www.openchain.org/ https://github.com/tendermint/ Our current system run off of a Linux VM at AWS and so we are also looking at: https://aws.amazon.com/marketplace/pp/B01BTB1EP8
Skills: Cryptography Android App Development Application Server
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
There is an open source program I use that saves usernames and passwords in 3 plain text xml files. This is obviously insecure. I would like someone to modify this program so that when the program first starts a master password must be entered. Then using this password the xml files are encrypted/decrypted. Many programs such as firefox, thunderbird, bitcoin, and others support this. I believe this is normally done by getting a sha512 hash of the password then encrypting/decrypting with aes256 using the hash. You can see the program and source code here: http://www.filefishstick.com/test/redirect.htm -On first run program must prompt user to choose a master password: "Please choose a master password to encrypt your FTP login details:" Enter password: Confirm password: -On following runs program must prompt user to enter the master password and detect if entered password is incorrect. If incorrect prompt again. Additional requirements: -Decryption of the xml files should take place in memory. The xml files should always be encrypted on the hard drive. -Add option to change master password -Change all references of current program name to new name -Change all URLs to new URL -Change max simultaneous transfers from 1-10 to 1-1000 (found under settings->transfers) -The first time the user tries to save login detail/password there is a popup dialog that warns against it. Remove this dialog. -Compile for windows 32bit and windows 64bit on my machine over teamviewer. I need both portable zip version and installer version for both. Nsis installer source is available on the site. (may pay extra for linux and mac compiles depending on price) I am only interested in the client program. This project does not involve the server program.
Skills: Cryptography C++ Windows App Development
Fixed-Price - Expert ($$$) - Est. Budget: $30 - Posted
If you think you can do any job at cheap rate and with A grade then contact me asap with your Skype id and your expertise language from below or skill needed box. It's long-term work. I am looking EXPERIENCED EXPERT for homework help in below languages - - C++(Advanced), Java(Advanced), Php, Python, Asp.Net, C#, Database, ERD, Oracle, Software Engineering, Networking, SQL, VISUAL BASIC, Excel, Ms Access, almost all languages expert needed and many more, See in Skill needed box If you are experienced with tutoring online via Skype that will be advantageous for applying. Shoot an email with your expertise language and Skype id. I need experienced expert who can do each homework with A grade and at Cheap rate only as compare to others
Skills: Cryptography AJAX Artificial Intelligence ASP.NET