Cryptography Jobs

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About Cryptography

Cryptography is the science of protecting sensitive information by transforming it into a code that is illegible to unauthorized users. Cryptographers use mathematics and computer algorithms to create cryptographic protocols and encryption techniques that allow data to be kept secure, in the same way a safe can be used to protect valuables from theft or destruction. Cryptographers are technology professionals specifically trained in the art and science of encrypting digital information, making them extremely valuable assets for businesses, governments, researchers and individuals looking to protect their sensitive data.

The demand for expert Cryptographers has grown significantly in recent years, as new laws have been introduced regulating data security and protection, forcing businesses of all types to recognize the importance of safeguarding sensitive information. As such, Cryptography has become an essential tool in a variety of industries, from healthcare to finance, marketing, law and many others.

Here’s some projects that our expert Cryptographers have made real:

  • Creating presentations around cryptography
  • Translating coding languages relevant to cryptography
  • Constructing comparison studies between different cryptographic algorithms
  • Developing secure network communication protocols through Diffie-Hellman key exchange and AES encryption
  • Enveloping, signing and creating digital messages with .pfx certificates
  • Extracting font names from documents written in Cyrillic
  • Deconstructing cryptosmt tool - Ascon cipher – changing from 5 to 4 size s-box
  • Simulating cryptocurrency risk levels
  • Decrypting digital files using PGP private keys

By hiring a Cryptographer through Freelancer.com on your projects you can ensure that your data remains secure, be it for a simple encryption project or something more complex such as building secure communication networks between multiple users. If you have a project requiring specialist cryptographic support then post it today on Freelancer.com and hire one of our experts to bring your project to life.

From 19,951 reviews, clients rate our Cryptographers 4.93 out of 5 stars.
Hire Cryptographers
About Cryptography

Cryptography is the science of protecting sensitive information by transforming it into a code that is illegible to unauthorized users. Cryptographers use mathematics and computer algorithms to create cryptographic protocols and encryption techniques that allow data to be kept secure, in the same way a safe can be used to protect valuables from theft or destruction. Cryptographers are technology professionals specifically trained in the art and science of encrypting digital information, making them extremely valuable assets for businesses, governments, researchers and individuals looking to protect their sensitive data.

The demand for expert Cryptographers has grown significantly in recent years, as new laws have been introduced regulating data security and protection, forcing businesses of all types to recognize the importance of safeguarding sensitive information. As such, Cryptography has become an essential tool in a variety of industries, from healthcare to finance, marketing, law and many others.

Here’s some projects that our expert Cryptographers have made real:

  • Creating presentations around cryptography
  • Translating coding languages relevant to cryptography
  • Constructing comparison studies between different cryptographic algorithms
  • Developing secure network communication protocols through Diffie-Hellman key exchange and AES encryption
  • Enveloping, signing and creating digital messages with .pfx certificates
  • Extracting font names from documents written in Cyrillic
  • Deconstructing cryptosmt tool - Ascon cipher – changing from 5 to 4 size s-box
  • Simulating cryptocurrency risk levels
  • Decrypting digital files using PGP private keys

By hiring a Cryptographer through Freelancer.com on your projects you can ensure that your data remains secure, be it for a simple encryption project or something more complex such as building secure communication networks between multiple users. If you have a project requiring specialist cryptographic support then post it today on Freelancer.com and hire one of our experts to bring your project to life.

From 19,951 reviews, clients rate our Cryptographers 4.93 out of 5 stars.
Hire Cryptographers

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    3 jobs found
    DeFi Smart Contract PenTest
    6 days left

    My DeFi protocol is code-complete and ready for public launch, but it cannot go live until an exhaustive penetration test confirms it is watertight. The scope is limited to the Solidity smart contracts powering liquidity pools, staking logic, rewards distribution, and governance. I need you to probe for the full range of threats—re-entrancy, flash-loan manipulation, oracle spoofing, unchecked arithmetic, gas griefing, privilege escalation, and any logic flaws unique to DeFi. A balanced mix of automated scanners (e.g., Slither, MythX, Echidna) and deep manual review is expected so no subtle issue slips through. Deliverables • Comprehensive audit report detailing every vulnerability, its severity, reproduction steps, and clear remediation advice • Proof-of-concept e...

    Audit Blockchain Cryptography Penetration Testing Risk Assessment Security Smart Contracts Solidity
    $410 Average bid
    $410 Avg Bid
    2 bids
    Bid now
    DeFi DApp with Staking
    5 days left

    I'm looking for an experienced blockchain developer to create a smart contract for a DeFi application. The DApp will focus on staking and yield farming. Key Requirements: - Develop a secure and efficient smart contract - Implement staking and yield farming features - Ensure scalability and security Ideal Skills: - Expertise in smart contract development - Experience with DeFi protocols - Strong knowledge of blockchain security practices Please provide examples of previous work and relevant qualifications.

    Blockchain Cryptocurrency Cryptography Ethereum Solidity
    $17 / hr Average bid
    $17 / hr Avg Bid
    5 bids
    Bid now
    Decrypt Number and Encrypted String
    22 hours left
    Verified

    I need a clear, step-by-step walkthrough that shows how the number 862882046310981 is transformed into the encrypted string 5a4ece668b2e02449a1a576120271ad8. • I already have the encryption algorithm in hand and will share it as soon as we start. • I’m not certain whether the method is symmetric or asymmetric, so please confirm that as part of your analysis. • I also have extra background on how the data was generated and will provide those details privately. Deliverables I expect: 1. A concise technical explanation of each stage in the encryption process. 2. Working code (Python preferred, but any clear language is fine) that reproduces the encrypted output from the plain number. 3. Brief notes on key properties of the algorithm—e.g., key length, mo...

    Algorithm Analysis Cryptography Data Analysis Encryption Software Architecture
    $68 Average bid
    $68 Avg Bid
    12 bids
    Bid now
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