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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    I have a Raspberry Pi (and keyboard and mouse and monitor) and I want to use it for keeping a copy of my company's database. However, the thumb drive I will be using must become an encrypted drive so that I do not publish personal details of all our service users by mistake. You must install VeraCrypt on a Raspberry Pi model 4. However, if this is not possible, then you can install it on my model 3. I will visit you (you must be within an hour's drive of London) and watch while you get it working and take my machine away. If absolutely necessary I will leave the machine with you for 24 hours. No more.

    $120 (Avg Bid)
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    1 bids

    i want to make a coin which is stable like USDT

    $3250 (Avg Bid)
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    5 bids

    We'd like to hire a smart contract developer (Polygon network) to review our contract to ensure there are no glaring security holes in it. Furthermore, we want the security professional to review the NFT minting website to ensure it's connected to the smart contract & the organization's wallet properly. The project will start on 12/5. Please include in your quote how many days the review would take.

    $597 (Avg Bid)
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    20 bids

    You have to create 3 scripts that: 1). will create a partial/unsigned transaction to spend from a 2-of-3 multisig address (already with funds) with Bitwasp PHP library. 2) create a script with bitcoinjs-lib that will take the above created tx hex and sign with one private key. 3) create a script with bitcoinjs-lib that will take the above signed tx's hex and sign the transaction with the final priv key in order to be ready to be broadcasted ( as hex ). More technical details in the PDF attached, like private keys and stuff that you can work with. My budget is around $50. If you know what you are doing, it should be very simple since there are plenty of examples with these libraries.

    $210 (Avg Bid)
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    3 bids
    NFT - PROJECT 5 days left

    Hello! We need a NFT smart contract on bsc for our project. Technical details will be given.

    $1309 (Avg Bid)
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    46 bids

    Build us our own digital token, write smart contract, write whitepaper, assist on listing and registering in exchanges etc

    $847 (Avg Bid)
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    21 bids
    Design NFT's 3 days left

    Experienced and qualified designer/artist required to design/create NFT's

    $28 (Avg Bid)
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    17 bids
    crypto currency 3 days left

    finding people to make apps or web about crypto that can send to master card not withdraw. i mean send to bank. rate salary price for 20k per week.

    $4321 (Avg Bid)
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    14 bids
    Stable Coin 3 days left

    I want to create a stable cryptocurrency

    $37 / hr (Avg Bid)
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    25 bids

    I’m looking for experienced full time resources in the blockchain and web3 space, preferably from IST timezone. I’m working on a handful of projects related to web3 dev comprising of blockchain data insights, smart contracts, wallet integration, token creation and such. Full stack experience would be preferred. Looking for experienced developers in the space with a clear understanding of blockchain ecosystem and good communication skills. In your bid, please share only those previous works you can verify. Only serious developers please apply.

    $11 / hr (Avg Bid)
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    4 bids

    2 We are looking for a specialist who can compose the most selling text (script) for a review on YouTube in English. The topic is mostly crypt. Employment - depending on the number of projects. The specialist is required to have: knowledge of English crazy oversight on reviews experience in conducting AB tests, comparing different approaches on Western bloggers (will be a plus) understanding in the crypt (will be a plus). When responding, please answer the questions and indicate the necessary information: 1) Indicate the amount for which you are willing to work (for one project)? 2) Show your portfolio / cases with a similar assignment "Start your response with 2 to confirm that you are not a bot."

    $312 (Avg Bid)
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    4 bids

    Hello, I need to learn about a crypto platform. Your job will be learn about this platform and team me everything about it. You must know good knowledge about defi and crypto.

    $138 (Avg Bid)
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    8 bids

    I’m an Edtech founder looking to reimagine how children learn STEM like Maths by teaching the whole curriculum through the power of stories. There will be three parts to this. 2. Games and play activities - online and in-person 3. The platform for the above. I’m looking to create NFT’s, and play to earn games with an ICO. I’m looking for help with a white paper and help ideally to take me all the way to launch on both of these.

    $1045 (Avg Bid)
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    12 bids
    Mining Pool Freelance 2 days left

    Set-up and configure a Bitmain E9 mining rig to pool for ethereum.

    $132 (Avg Bid)
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    5 bids

    Hello, for a project I need a Cryptocurrency. I prefer Cardano or other Low energy Blockchain. I only accept applications of someone who has created a cryptocurrency before. Thank you

    $959 (Avg Bid)
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    31 bids

    Need someone to help me build a crypto currency either on the ethereum or binance network

    $841 (Avg Bid)
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    7 bids

    We need to develop and design a Metaverse cryptoproject with some features.

    $50000 (Avg Bid)
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    15 bids

    I am trying to update old PIVX code to latest code but getting some issues, for example not updating masternode list due to "Got bad Masternode address signature"

    $14 / hr (Avg Bid)
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    7 bids

    I am only interested in organic growth. No bots. No cheating. real posts, real traffic. Please let me know if you have experience marketing in the cryptocurrency space. Thanks.

    $180 (Avg Bid)
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    18 bids

    I need a blockchain expert with track records to help draft a technical whitepaper.

    $438 (Avg Bid)
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    36 bids

    I need you to code to regenerate a boomerang attack on a block cipher. You will need it to code it in java. The very simple and detailed steps to do so is clearly stated in the tutorial paper that I have attached. I need it in 48 hours. Price can be negotiated after you could confirm that you can do the job in time.

    $131 (Avg Bid)
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    2 bids

    There is a question and answer mechanism. It consists in the fact that the question "Q" is 4 bytes, for eg. 0xAA 0xBB 0xCC 0xDD. The answer "A" is generated in such a way that the sequence "S" with a length of 8 bytes is added to the question "Q". A sequence of 12 bytes is then created. The SHA256 hash function of that 12 byte string is then computed. The first 4 bytes of the calculated SHA256 value are the response "A". So, for example: Q = 0xAA, 0xBB, 0xCC, 0xDD S = 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 SHA246 (AABBCCDD0102030405060708) = e455df10f57a47498c12c5eaad9b93f525aba1252a7a3a7fee160878db0b6aa8 so: A = e455df10 (first 4 bytes). I know 3 pairs of sample Q questions and A answers. The goal is to calculate S which is a ...

    $131 (Avg Bid)
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    5 bids
    Want to make a trading bot 20 hours left

    I want to make a crypto trading bot. Would want to see previously done strategies

    $13 / hr (Avg Bid)
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    5 bids
    Cryptography 20 hours left

    I need help in solving cryptography tasks

    $35 (Avg Bid)
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    9 bids

    I am only interested in organic growth. No bots. No cheating. real posts, real traffic. Please let me know if you have experience marketing in the cryptocurrency space. Thanks.

    $149 (Avg Bid)
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    24 bids

    1) login page with 23 factor authentication 2) registration page 3) password reset with 23 factor authentication 4) Session key must be generated for each login

    $122 (Avg Bid)
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    5 bids

    I need someone that can walk me through the process of staking specific altcoins, as an example Time Wonderland. As an example when I tried to move AVEX from my AVEX wallet to my Metamask wallet this popped up "Not ETH network, set to lowercase", so you can see i need help since i can not get any further. I want to stake several altcoins including ohm, but need someone to walk me through the process on each coin. It should not take much time for the fee.

    $22 / hr (Avg Bid)
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    Token has already been created and minted. I am looking to create an option for donation or purchase in exchange at a 1:1 rate.

    $21 (Avg Bid)
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    1 bids

    I'm looking for a community moderator for my NFT discord server. Please do not copy-paste your bids. Just bid with the following. 1) Have you ever done discord moderation? 2) What time zone are you from? 3) how many hours can you engage with the community? 4) Do you have any technical skills for the discord? 5) What can you do for our community?

    $9 / hr (Avg Bid)
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    3 bids

    Have a python project which is querying an API from Binance (currently a delay has been added to make this every 3 seconds to avoid IP ban). Need this to be adjusted to pull a list of IP addresses and instead of 3 seconds to make the query much much faster. (also extra bonus if you think the speed can be optimized in any way)

    $37 (Avg Bid)
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    7 bids

    Hello We are building a crypto company and need CTO for building exchange and our other services and products. We have our own blockchain and coin and now need for build exchange, wallet, NFT marketplace, staking, DeFi and like these service for our own project. Please send bid If you have experience in these projects and have complete skills in tech and team management. Our work will be remote and about 6 months for first phase. Best regards

    $50 / hr (Avg Bid)
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    5 bids

    My homepage written in Laravel and React is supposed to link the Metamask Wallet. However, I have a little problem with my site. I am looking for experts in Laravel, React, Crypto Wallet, and web3.js.

    $30 - $250
    $30 - $250
    20 bids

    Jestem zainteresowany stworzeniem własnej kryptowaluty a kodzie bitcoina bądź ethereum

    $5093 (Avg Bid)
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    4 bids

    Tenemos un token de la Binance Smart Chain y queremos hacer una plataforma de staking y farming, necesitamos un programador serio que sepa hacer este tipo de trabajos con total seguridad ya que tendrá que pasar una auditoria después y queremos que esté perfecta.

    $1799 (Avg Bid)
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    8 bids

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