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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    13 δουλειές που βρέθηκαν, με τιμές EUR

    I'm looking for someone who can send me 0.01 bitcoins wich means about $70 I'm ready to pay (120$ in advance) here, but i need the coins in next hours

    €103 (Avg Bid)
    Εγγυημένο Σφραγισμένο
    €103 \u039c\u03ad\u03c3\u03b7 \u03a0\u03c1\u03bf\u03c3\u03c6\u03bf\u03c1\u03ac
    0 συμμετοχές

    Hello, I need a program that does Bitcoin and Ethereum hashing operations and then compares result to Bloom Filter, all done on GPU (using CPU only for output and input value incremention). NB : For a considerable time gain, this project can be tailored to my requirements: Gitub project: [login to view URL] For Ethereum : - Private Key with Sequental Decrementing Mode (brute force, using t...

    €130 (Avg Bid)
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    4 προσφορές
    cryptography architect 6 μέρες left

    We need architecture help on a crypto project. The right person will be knowledgeable with SHA, HMAC, RSA, and AES. The short-term project may evolve into more. Funded non-government start-up.

    €44 / hr (Avg Bid)
    €44 / hr \u039c\u03ad\u03c3\u03b7 \u03a0\u03c1\u03bf\u03c3\u03c6\u03bf\u03c1\u03ac
    20 προσφορές

    I need to upgrade this fork of Litecoin: [login to view URL] A new repository with new github account needs to be created. THIS PROJECT REQUIRES ALL WALLET VERSIONS TO BE UPGRADED to reflect the most recent changes to the Litecoin Core. In addition to upgrading ALL wallet versions to reflect the most stable version of Litecoin, I will need a blockchain explorer and a basic website completed. I wi...

    €1217 (Avg Bid)
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    24 προσφορές
    Python & Cryptography 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Python & Cryptography. Given functions with some pieces of data. Find message

    €21 (Avg Bid)
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    14 προσφορές
    Crypto QT wallet Re-design 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We are looking for someone that can do a full wallet re-design of a qt wallet to look something similar to this. [login to view URL]

    €520 (Avg Bid)
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    20 προσφορές

    i need a blockchain and a cryptocurrency like [login to view URL] But my coin will have extra functionality

    €4526 (Avg Bid)
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    16 προσφορές
    Compile me "Keccak 256" hash algorithm for AS3 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    There are variety of cryptographic libraries for flash but I couldn't find any Keccak 256 algorithm. So I'm looking for someone who can compile "Keccak 256" hash algorithm in ActionScript class format.

    €164 (Avg Bid)
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    5 προσφορές

    I looking for Java/Spring/MongoDB Developer have strong skills in Building COnline PKI Web browsers SSL and servers Certificate Authority Application server. Regards

    €329 (Avg Bid)
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    7 προσφορές
    Bitcoin Auto Mining 2 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I need a professional expert to setup bitcoin auto mining By applying this, you are agreed that you will deliver proposal, attend interview and need to sign NDA about not reuse or publish or share the code or part of the code to others. ---------------------------------------------------------------------------------------------------------------------- Please develop proposal (max 3 pages) sho...

    €363 (Avg Bid)
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    15 προσφορές

    I am looking for senior smart contract developer having experience in ICO, token and smart contract, dapp development This will be the long term position. We are building e-sports platform and we are going to integrate blockchain technologies to our platform. You should answer our some questions, this is for selecting right candidate. please have a look our questions and bid here with answers I...

    €20 / hr (Avg Bid)
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    37 προσφορές
    Developer Mode -- 2 13ώρα left

    I need a new website. I need you to design and build a website for my small business.

    €21 (Avg Bid)
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    7 προσφορές
    Adding CryptoNight algorithm to YAAMP (yiimp fork) pool 2ώρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We would like to add algorithm called CryptoNightv7 and CryptoNight into the yiimp opensource code for hashing process. We are interested in getting this algorithm fully integrated to our Yiimp pool management. Any one up for the task? It needs to function 100% properly, with frontend, backend, dashboard, stats, workers, payout, stratum connections just as any other already added algo and coin....

    €1126 (Avg Bid)
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    14 προσφορές