Cryptography jobs

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! Hire Cryptographers


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    Expert Ethereum Developer 6 days left

    I need an expert Ethereum Developer that will join our team for a blockchain project. The developer will be incharge of: 1. Smart contracts (token and ICO) 2. Development and Integration of Ethereum Wallet 3. Support for listing and trading token on Exchanges

    $1469 (Avg Bid)
    $1469 Avg Bid
    16 bids
    Decode ionCube files 6 days left

    Hello, I need someone to decode 5 pcs ioncube files for me. Files are attached. Thanks.

    $33 (Avg Bid)
    $33 Avg Bid
    3 bids
    Build algorithm project 6 days left

    I need an expert to integrate algorithm , this project intends to expert and fast experts , i need someone who can do it and confident - this project using java for implementation . the deadline is one week , the budge is negotiable .

    $200 (Avg Bid)
    $200 Avg Bid
    15 bids

    I need to sell a Bitcoin Cryptocurrency website. We have design as per customers need with ICO Scheduling please only serious bidders negotiate price can given bid and finalise

    $5516 (Avg Bid)
    $5516 Avg Bid
    14 bids

    No knowledge about Blockchain, Masternodes, C++, nodejs ?? then please don't reply on this project. Project: - Fork / Design a privacy coin - Create a new blockchain setup several nodes to support the network (And tell us requirments: the hardware / miners / servers whatever needed) - Clean code is important - Add extra privacy options f.e. darksend / tor implementation; - Mastern...

    $1944 (Avg Bid)
    $1944 Avg Bid
    9 bids

    I have recently run an ico and have 50,000,000 tokens still sitting in my smart contract. I need someone to help me access the, as I dont know how

    $149 (Avg Bid)
    $149 Avg Bid
    7 bids

    I need some mini module which will check is transaction completed or not. Example, i'm typing sender's wallet address, reciever's wallet address, sending amount and it show me if such transaction exists and it's completed or not. Need for this following coins: bitcoin ethereum bitcoin cash ripple zcash doge Need to write in php. There are some ready API&#...

    $575 (Avg Bid)
    $575 Avg Bid
    29 bids

    I need to sell out Crypto currency [url removed, login to view] website is complete in full phase as per client requirements. I already have a design and Development with complete admin panel. Only Serious Bidder please bid.. Regards WTS Team

    $5530 (Avg Bid)
    $5530 Avg Bid
    13 bids
    Cryptocurrency website sale 3 days left

    A Cryptocurrency full phase website is already developed is ready for sale [url removed, login to view] with full admin panel hope once bid we will provide admin panel details for check only serious bidder interest Regards WTS Team

    $1044 (Avg Bid)
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    11 bids

    need to solve a code in AES algorithm

    $10 - $31
    $10 - $31
    0 bids
    Team Wanted For ICO 3 days left

    Team wanted for ICO. Need: Community managers Marketers Bounty Manager Graphic designer

    $680 (Avg Bid)
    $680 Avg Bid
    20 bids

    I am looking for expert to debug and trace matlab code. Freelancer must have a soild background of error correction encoder and decoder . Please contact me for more details

    $38 (Avg Bid)
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    14 bids

    Use any cryptographic library to implement an IND- CCA secure public key encryption scheme and encrypt some image file using the scheme. Submit a detailed description of your implementation.

    $128 (Avg Bid)
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    5 bids

    install crypto exchange on cloud inbox asap

    $727 (Avg Bid)
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    4 bids

    Need you to develop a blockchain explorer for my altcoin. Copy of Blackcoin. When bidding, please list your experience creating block explorer. Canned bids will be sent to spam.

    $846 (Avg Bid)
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    15 bids

    i need create a multi crypto currency wallet for my company.i pretend develop future projects too. i need someone reliable and available to work in long term .

    $31 / hr (Avg Bid)
    $31 / hr Avg Bid
    6 bids

    Contact me if you have done projects using IS08583 protocols specially using ZKA which is used by Germany acquirers. If you have done integration using ISO8583 using 2-Key Triple des and ZKA then respond with proof please.

    $1947 (Avg Bid)
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    7 bids
    Ethical Hacker 1 day left

    We are a tech startup We are looking for an ethical hacker to implement and maintain our security systems. with as you will be working alongside two highly intelligent people who are real perfectionist. They are located in different cities, one in Ukraine and one in Hong Kong so difficulties here would be the time zones - UTC+2 and UTC+8 . You will be responsible for preventing unauthorized acces...

    $318 / hr (Avg Bid)
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    19 bids

    Hi i need to find the type of encryption of these requests here is the request and the response [url removed, login to view] [url removed, login to view] i need to know how are encrypted these two info : X-APIToken and "sign" if can it be useful i have already collected the requests using fiddler , so i can send you the fiddler session more info will be provided ...

    $48 - $404
    $48 - $404
    0 bids

    i have some encryptions and i know the answer of encryptions also i want to find out which method and type is used to make this encryptions... i am sharing 2 samples below and i can share more samples on demand (REMOVED BY FREELANCER.COM ADMIN)

    $380 (Avg Bid)
    $380 Avg Bid
    2 bids

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