Hire the best Cryptographers

Check out Cryptographers with the skills you need for your next job.

Clients rate Cryptographers
Rating is 4.8 out of 5.
4.8/5
based on 391 client reviews
Howard Eldon P.
$150/hr
  • Trophy Icon Cryptography
  • Reverse Engineering
  • Malware
  • Blockchain
  • Cryptocurrency
  • Information Security

I am a cybersecurity professional with a Master's Degree in Cyber Operations and two years of work experience in cybersecurity research and development at a world-class R&D laboratory. In that job, I gained experience in network traffic analysis, malware analysis, and cryptography. For over two years, I have worked as a freelancer, providing consulting, content development, and course creation in cybersecurity and blockchain security. I specialize in development of technical content (blogs, whitepapers, case studies, and courseware) in the field of cybersecurity. I currently hold the Certified Ethical Hacker and Certified Blockchain...

Danish A.
$50/hr
  • Trophy Icon Cryptography
  • Bitcoin
  • Software Consultation
  • Electrical Engineering
  • Hardware Troubleshooting
  • Binance Coin
  • Emerging Tech Consultation
  • Cryptonex
  • Mining Engineering
  • Forex Trading
  • Cryptocurrency
  • Business Plan
  • Mining Pool

Are you looking for financial modeling, financial projections, Excel spreadsheet expertise, financial forecasting, and financial evaluation? If so, then I'm confident that I can bring excellent work to these projects. I can help you design the most accurate and precise financial model for your business, company or start-up. A dynamic, flexible, accurate, well-organized, and timely financial model is what I can design for you. Professional Dashboard Organized Assumptions, Basic Assumptions, CAPEX Assumptions, OPEX Assumptions Income Statement Cash Flow Balance Sheet Investment Program Borrowing Summary Account Movements Income Statement...

Laxman S.
$50/hr
  • Trophy Icon Cryptography
  • Bitcoin
  • Blockchain
  • Solidity
  • Ethereum
  • Blockchain Development
  • Node.js
  • NFT Marketplace
  • Blockchain Architecture
  • React Native
  • Smart Contract Development
  • Crypto Exchange Platform
  • Angular
  • API Integration
  • DeFi
  • Crypto Wallet Development

👋 I am Blockchain Developer with experience over 5 years of working with brands across 80+ countries and have successfully completed over 100 projects. I am a Bachelor of Technology in computer science. Prior to becoming one of the renowned person in technology, I worked for 6 years with e-commerce brands to help them successfully built their marketplaces using Magento and other PHP frameworks. I have a deep understanding of technology and user experience. Services that I can help you with: ✅ Blockchain Integration ✅ NFT Development ✅ DeFi Development ✅ Crowdsale Smart Contract Development ✅ Any other DApp Development ✅ Customer smart...

Navdeep G.
$100/hr
  • Trophy Icon Cryptography
  • Bitcoin
  • Ethereum
  • Blockchain
  • Solidity
  • Hyperledger
  • Prototyping
  • Smart Contract
  • Ethereum
  • DApps
  • JavaScript
  • C++
  • Blockchain Development
  • Blockchain Architecture

Expert in Blockchain and Cryptocurrency (end to end solutions) and DLT (Distributed Ledger Technology). I have great experience in Blockchain Development including building architecture, developing Smart contracts, wallets, exchanges, DAPP solutions. I have been into all kinds of blockchain projects like Smart contract, Wallet creation, Token creation, Integrating the wallet, website and app creation, whitepaper creation and building crypto exchange/trading platform for Bitcoin and other Cryptocurrencies such as Dash, Ethereum, and Litecoin, etc. I can help you with the development of the pilot version of the Peatio crypto open-source...

Bilal I.
$40/hr
  • Trophy Icon Cryptography
  • Document Review
  • Project Management
  • Blockchain
  • EOS
  • Smart Contract
  • Product Management
  • Ethereum
  • Distributed Ledger Technology
  • Ethereum Network
  • Blockchain Architecture
  • Solidity
  • Blockchain Development

OUR CORE SERVICES: - Smart Contract, DApp Development & Auditing. - Crypto Wallet & Exchange development for Bitcoin, Ethereum, or other crypto coins. (Ethereum, polygon, BSC) - Every kind of smart contract in solidity. - CUSTOM SMART CONTRACTS: We code gas-efficient custom smart contracts to store NFT information, which bring transparency, time efficiency, precision, safety, cost-effectiveness, and trust into blockchain transactions. - UNIT TESTING AND CODE AUDITS: We conduct extensive review and testing. You should NEVER launch your project to the blockchain without proper testing and auditing. OUR RECENT PROJECTS: NFT marketplace...

Simon B.
$60/hr
  • Trophy Icon Cryptography
  • Solidity
  • Smart Contract
  • Ethereum
  • JavaScript
  • Blockchain
  • React

github.com/SimRunBot * NFT Dev (ERC721, ER1155, ER721a, MerkleTree Whitelisting, Staking, etc.) * Smart Contract Development * Smart Contract Auditing * Dapp Development Languages: Solidity, Javascript Frameworks: Hardhat, ReactJS, wagmi, NextJS

Leandro M.
$75/hr
  • Trophy Icon Cryptography
  • Economic Analysis
  • Blockchain, NFT & Cryptocurrency
  • Corporate Finance
  • Tokenization
  • DeFi
  • Tokenomics
  • Utility Token
  • SEO Writing
  • Economics
  • Researcher
  • Content Writing
  • Decentralized Exchange
  • Initial Coin Offering
  • Data Analysis

Hello all, My name is Leandro. I am tokenomics expert that comes from the field of mainstream economics. As an economist, I have done extensive research on how an incentives mechanism needs to be designed in order to be sustainable. Sustainability is the most important feature of a tokenomics model, and my years of researching how monetary policy unfolds has taught me how to achieve it. I have been working and advising tokenomics projects throughout all the different phases, pre-launch, fund raising, ICOs, private and public sales, and after launch through the development of a project dashboard, that allows me to keep track of the...

Maria V.
$65/hr
  • Trophy Icon Cryptography
  • Python
  • JavaScript
  • Security Engineering
  • Security Analysis
  • Linux
  • Security Testing
  • Information Security
  • Information Security Consultation
  • Scripting
  • Email Security
  • Content Writing
  • Node.js

I hack web and desktop applications and develop patches while leading a team of security engineers to coordinate our technical strategy

Hardik G.
$40/hr
  • Trophy Icon Cryptography
  • Proofreading
  • Mathematics Tutoring
  • Teaching Algebra
  • Calculus
  • C++
  • Information Security
  • Encryption
  • Elliptic Curve Cryptography
  • Mathematics

Expertise:- All kind of Math at undergrad level. Public key Cryptography, Zero knowledge proof (ZKP), Verifiable Computation, Attribute Encryption, Charm Crypto implementation and analysis, Homomorphic encryption (SEAL library), Designing protocols and implementation in python, PIR, theoretical security analysis. Qualification: BS-MS in Mathematics. PhD in the area of Mathematical Cryptography.

MURAT A.
$50/hr
  • Trophy Icon Cryptography
  • Cryptocurrency
  • iOS Development
  • Encryption
  • Smart Contract
  • C++
  • Blockchain
  • SQLite
  • Blockchain Development
  • MongoDB
  • Node.js
  • Web Application
  • TypeScript
  • Application Security
  • Unreal Engine

Hello, If you are looking for optimized solutions, to use in your projects, as key parts of a huge solution, please contact me. Never build a project using low level (self implemented - code without doing necessary tests ) parts for your projects, which may lead to fail. Take care !

Sajid H.
$50/hr
  • Trophy Icon Cryptography
  • SOAP
  • Website Security
  • Core Java
  • Spring Boot
  • Apache Tomcat
  • Microsoft IIS
  • Cloud Security
  • iText
  • Document Analysis
  • Apache PDFBox
  • SSL
  • API
  • Web Development
  • Microsoft Azure
  • Amazon Plugin

PKI & Digital Signatures / E-Signature specialist, having 11+ years experience in developing enterprise applications involving PDF, XML and CMS based Digital signatures, X509 Digital Certificates & PKI domain. PKI & Digital Signature Experience ------------------------------------------- - Bouncy Castle, IAIK - CAdES, PAdES, XAdES - SAML, OpenID, OAuth, SSL Client - OCSP, SCVP, Timestamping, LTANs - PKCS#1, PKCS#10, PKCS#11, SCEP, EST - Digital Signatures (PDF, XML), E-Signature - Microsoft CA, ADSS Server, Dogtag PKI, OpenSSL - HSM (Utimaco, Gemalto), Smart Cards, Amazon Cloud HSM, Azure Key Vault - SingPass, S/Mime integrations...

Cody M.
$75/hr
  • Trophy Icon Cryptography
  • Technical Support
  • Computer Network
  • Network Engineering
  • Hardware Troubleshooting
  • GoDaddy
  • Website Customization
  • WordPress Plugin
  • Twitch
  • Cryptocurrency
  • Ecommerce Platform Development
  • Data Mining
  • Mining Engineering
  • Ethereum Network
  • Bitcoin

I am native speaking English. I grew up around a keyboard. I enjoy helping other businesses and people succeed. I am very efficient in networking, but I am also very good at most computer tasks. I study at Western Governors University, where I am earning my Bachelors in Information Technology. If I can help you in any way, please feel free to message me or submit a job request! Thanks, I hope to work with you soon.

Fotios B.
$35/hr
  • Trophy Icon Cryptography
  • C++
  • C#
  • Java
  • JavaScript
  • PHP
  • Laravel
  • WildFly
  • Google APIs
  • Office 365
  • Automation
  • PDF
  • Amazon EC2
  • Google Cloud Platform
  • Microsoft Azure

Do you have a demanding IT project? A project that is probably not a good fit for the average developer? Do you need someone with a solid formal education in computer science whose breadth of IT knowledge and experience can bridge systems and technologies and make it all work? My IQ is 146 (see page bottom), I hold an MSc in Computer Science from a top UK technical university and have 15 years of hands on experience in the industry, successfully leading the development and delivery of projects as important as the European Root Certification Authority for EU's Digital Tachograph: dtc.jrc.ec.europa.eu Here is a list of my skills as well as...

Debra W.
$250/hr
  • Trophy Icon Cryptography
  • Node.js
  • Blockchain
  • Solidity
  • Go
  • Python
  • AWS Lambda
  • TypeScript
  • DevOps
  • Docker
  • AWS Lambda
  • Serverless Computing
  • Ethereum
  • PostgreSQL
  • Infrastructure as Code

Cloud Architect - Full Stack Developer - Dev Ops - Blockchain Python, Javascript (node), Golang Terraform, Docker AWS Developer and Solutions Architect Seasoned entrepreneur and hacker with experience across industries and technology stacks. Expert problem solver with an ability to bring value to any consulting project.

Kalpna G.
$150/hr
  • Trophy Icon Cryptography
  • Elliptic Curve Cryptography
  • Linux
  • Information Security
  • Encryption
  • Application Security
  • Python
  • Android
  • C
  • NFC
  • Reverse Engineering
  • JavaScript
  • Java
  • C++
  • Blockchain, NFT & Cryptocurrency
  • Windows API Development
  • OAuth

PKI Security products and solutions related Cryptography, PKCS#11, HSM, Smart Card, Multi-factor Authentication, OTP Authentication, Bio-metric authentication, Application Security, Encryption, Digital Signature, CSP, Credential Provider, solution conforming to NIST FIPS-140 level 2/3 certification, PIV, CAC, Entrust, Id-entrust, CMS solutions, MS Identity life cycle Manager, Minidriver, SSL and VPN integration, Various Identity access control and management solutions, Worked on solutions targeted for Desktop (Windows, Linux, Mac), Embedded Software, IOT Device solutions, Android Native Development, Cloud solutions, - Languages*:: C,...

Zhiyi W.
$65/hr
  • Trophy Icon Cryptography
  • C++
  • Embedded C
  • Embedded Linux
  • Golang
  • Java
  • Rust
  • Blockchain
  • TCP/IP
  • iOS
  • Cryptocurrency
  • Android
  • Websockets
  • Web Proxy
  • Native App Development
  • Linux

Always work at high standard! Never compromise! Developing software has been my hobby over 18 years since I was a teenager. I like to take more challenges in any directions, which can use my software development skills to make things more effective, more attractive, even more AI. I have 13+ years experiences in 1. Software full stack developments 2. iOS and Android app developments 3. Software and System networking security (Found over 20 0day security bugs) 4. Software reverse engineering 5. Focus on high performance and low latency Recently projects: 1. High performance TCP Tunnel server, 10x faster than frp. Supported RDP, SMB, SSH,...

Iftakhar R.
$58/hr
  • Trophy Icon Cryptography
  • Blockchain Architecture
  • Ethereum Network
  • Node.js
  • NFT Minting
  • Mobile App Development
  • React
  • Binance NFT
  • Solana
  • Stellar
  • Smart Contract
  • web3.js
  • Blockchain
  • Solidity
  • DApps
  • JavaScript
  • Blockchain Development

I'm the CEO at ArStudioz, a Blockchain App Development Company that develops user-friendly Mobile Apps and Software for Companies like Rolls Royce, Siemens Arabian Bemco, Idea Network, UC Bank to help them increase engagement, transactions, and overall satisfaction with their customers! My passions in business focus on solving real problems for the Startups & Enterprise and making sure that my team delivers the highest quality products. I always strive to make my clients satisfied, client's end customers happy, and skyrocket business sales with our products and services. * ArStudioz provides 360-degree mobility services. From business...

Haider A.
$35/hr
  • Trophy Icon Cryptography
  • WordPress
  • WordPress Theme
  • WordPress e-Commerce
  • WordPress Multisite
  • WordPress Development
  • Shopify
  • Webflow
  • Squarespace
  • JavaScript
  • React
  • Divi
  • Elementor
  • HTML
  • Theme Customization

A Full-Stack Web Developer with a Wide Range of Experience has Arrived! The Top-Rated Plus badge🥇 on my profile says it all: the Web Design & Development services I offer my clients are absolutely remarkable and perfect. When it comes to website design and development, I take a straightforward approach: one size does not fit all. Every website should be planned and created with the intended audience in mind. My websites are fully optimized for search engines, cross-browser/platform responsive, and GTMetrix optimized. To make maintenance, interoperability, and cross-browser compatibility as simple as possible, I develop with a passion for...

Adeel J.
$100/hr
  • Trophy Icon Cryptography
  • SOC 2 Report
  • Reverse Engineering
  • Ransomware
  • Vulnerability Assessment
  • Cybersecurity Management
  • Security Operation Center
  • Amazon Web Services
  • Incident Management
  • System Security
  • Cloud Computing
  • Penetration Testing
  • Web Application Security
  • Security Testing
  • Encryption
  • Incident Response Plan

I am Chartered IT Professional, Integrated Data Privacy Professional, Member International Association of Privacy Professionals, AWS Certified Cloud Practitioner, Certified Information Systems Security Auditor, FinOps Certified Practitioner, TripleByte Certified Dev Automation Engineer, Certified Vulnerability Assessor, Certified Incident Handling Engineer, Google Certified Site Reliability Engineer, Google Certified Developer, AWS Accredited Technical Professional, AWS Well-Architected Proficient, OCEG Certified GRC Professional, Certified DevSecOps Engineer, Certified Scrum Master, GDPR Certified Data Protection Officer, Certified HIPAA...

Walid M.
$40/hr
  • Trophy Icon Cryptography
  • Computer Vision
  • Natural Language Processing
  • Python
  • SQL
  • TensorFlow
  • Machine Learning
  • Deep Learning
  • Recommendation System
  • R
  • Data Scraping
  • Blockchain
  • Cryptocurrency
  • Smart Contract
  • Blockchain Architecture
  • Solidity

+4 years of experience in development. I've worked on various fields such as Web development, Machine/Deep learning and Blockchain.

Aaron J.
$150/hr
  • Trophy Icon Cryptography
  • C++
  • Python
  • Bitcoin
  • Blockchain
  • Node.js
  • Ethereum
  • Solidity
  • web3.js
  • Django
  • Ethereum

Experienced and professional developer based out of Boulder, CO. Specialist in Ethereum smart contracts and advanced Bitcoin blockchain technology. Known for delivering clean quality code that is both tested and robust.

Maged M.
$85/hr
  • Trophy Icon Cryptography
  • Machine Learning
  • Ethereum
  • Hyperledger
  • Blockchain
  • Artificial Intelligence
  • IBM Blockchain
  • Natural Language Processing
  • web3.js
  • Solidity
  • Hyperledger
  • React Native
  • React
  • Node.js
  • Software Architecture & Design

Hello! Team lead of blockchain developers that is ready to deliver an AI or blockchain project for your product or idea with more than 100 success story in upwork. Blockchain skills - +4 years experience in blockchain development for permissioned, and public blockchain. Developing dapps using Ethereum, Hyperledger Fabric, Or R3 Corda. - Understand business requirement for blockchain use cases, developed and applied BC in several business demands ( Medical, supplychain, education, and others). +4 years experience in Blockchain (architect, operation, and developing). +4 product development cycle and complete software cycle. Experience in...

Binod S.
$35/hr
  • Trophy Icon Cryptography
  • Patent Law
  • Trademark Consulting
  • Patent Preparation
  • Patent Search
  • Design Writing
  • Trademark Prosecution
  • Patent Prosecution
  • Market Research
  • Clean Technology
  • Artificial Intelligence
  • Medical Device
  • Machine Learning
  • Electronics
  • Pharmaceutical

Patent & Trademark expert with extensive knowledge and expertise in IP matters. Expert in Novelty/Invalidation/ FTO/Product clearance/ Market &Business research/ IP Mapping /Competitive analysis/trademark research and other analytical services. Also expertise - Provisional & Non-provisional(Complete) Patent drafting and Office Action responses (Non-final and Final responses). Can easily handle IP tasks covering USPTO, Canadian ,Australian, European, UK patent offices as well as PCT patents Domain expertise- Drone Technology Blockchain Cryptocurrency 3D Printing Software and Internet Technology Artificial Intelligence (AI) Biotechnology,...

Neslihan Y.
$25/hr
  • Trophy Icon Cryptography
  • Mathematics
  • Mathematics Tutoring
  • Python
  • C++
  • Microsoft Visual Studio
  • LaTeX
  • Microsoft Word
  • Writing
  • Information Security
  • Encryption
  • Algorithm Development
  • Research Papers
  • Research Documentation

Hello, I welcome all of you. I can help you with your tasks about cryptography and mathematics. I am working on some articles, and I do love doing research and learning new things, especially about coding and cryptography. I like to improve myself and while doing this, I am happy to help you with your tasks.

Andrii G.
$55/hr
  • Trophy Icon Cryptography
  • C++
  • Python
  • Embedded Linux
  • C
  • OpenWrt
  • Linux System Administration
  • Kernel
  • Unix Shell
  • Android
  • Driver Development
  • Linux

Linux developer: from kernel drivers till own browsers, firmwares and linux distros! Creating software for people. github: repu1sion

Dai Chi D.
$15/hr
  • Trophy Icon Cryptography
  • Mathematics
  • LaTeX
  • Information Security
  • Equations
  • Calculus

My strengths are enthusiasm, patience, determination and honesty. My knowledge interests are in the field of Cryptography and Mathematic. I feel that my knowledge-based skills could be stronger, and I am constantly working to improve them.

Muhammad F.
$50/hr
  • Trophy Icon Cryptography
  • WordPress
  • WooCommerce
  • Website Development
  • PHP
  • MySQL Programming
  • Shopify
  • Laravel
  • Ecommerce Platform Development
  • Shopify Apps
  • Plugin Development
  • Theme Development
  • Mobile App Development
  • Blockchain
  • Cryptocurrency
  • Blockchain Development

I am here to do any kind of web development task for you, and specially if it's WordPress or Shopify related, I'm the one whom you're looking for :) During the NFT boom, got a good knowledge and experience of the NFTs. I did work on 6 NFT projects as a developer. I'm a web developer having 6+ years experience and PHP, MySQL, Laravel, JS, jQuery, Liquid, HTML and CSS are the languages that I have been playing with all this time. I have been mostly working on plugin / add-on development and it's been my favorite. I have developed over 50 custom WordPress plugins for my clients. I also have fixed bugs and customized a lot of websites, also...

$NaN/hr

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How to Hire Top Cryptographers

How to hire cryptographers

Need help securing IT and computer systems through algorithms, ciphers, and encryption? Or are you trying to decrypt a secure file to access its contents? Cryptographers are here to help. 

So how do you hire cryptographers? What follows are some tips for finding top cryptography consultants on Upwork.

How to shortlist cryptography professionals

As you’re browsing available cryptography consultants, it can be helpful to develop a shortlist of the professionals you may want to interview. You can screen profiles on criteria such as:

  • Technology fit. You want a cryptographer who understands the technologies behind the IT or computer system you wish to encrypt or decrypt.
  • Project experience. Screen candidate profiles for specific skills and experience (e.g., securing blockchain transactions with cryptographic hash functions in your supply chain management system).
  • Feedback. Check reviews from past clients for glowing testimonials or red flags that can tell you what it’s like to work with a particular cryptographer.

How to write an effective cryptography job post

With a clear picture of your ideal cryptographer in mind, it’s time to write that job post. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project.

Job post title

Create a simple title that describes exactly what you’re looking for. The idea is to target the keywords that your ideal candidate is likely to type into a job search bar to find your project. Here are some sample cryptographer job post titles:

  • Cybersecurity consultant experienced encrypting/decrypting files with AES
  • Seeking a blockchain cryptography expert to help implement a smart contract system with Hyperledger
  • Need an ethical hacker to decrypt IT systems infected by ransomware

It’s worth noting that you will rarely find freelancers branding themselves as cryptographers. Based on your cryptography needs, your title should be more specific and target the type of professional who is relevant to your job post. 

Cryptography project description

An effective cryptography job post should include: 

  • Scope of work: From recovering locked files to beefing up security with encryption, list all the deliverables you’ll need. 
  • Project length: Your job post should indicate whether this is a smaller or larger project. 
  • Background: If you prefer experience with certain industries, technologies, and cryptography specializations, mention this here. 
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Cryptographer responsibilities

Here are some examples of cryptographer job responsibilities:

  • Identify and patch weaknesses in existing cryptography-based security systems
  • Design and implement technology-specific encryption solutions (e.g., cryptographic hash functions for blockchain implementations)
  • Create a cybersecurity plan for following encryption/decryption best practices

Cryptographer requirements and qualifications

Be sure to include any requirements and qualifications you’re looking for in a cryptographer. Here are some examples:

  • Cryptography
  • Cybersecurity
  • Mathematical/statistical analysis
  • A working knowledge of algorithms, ciphers, and encryption technologies
  • Platform-specific experience with the computer and IT systems of your project (e.g., AWS cloud infrastructure)

Cryptographers FAQ

What is cryptography?

Cryptography is the study of information and communication security techniques. While the practice of securing communications through coded messages is nothing new, today’s cryptographers leverage computer science and mathematical concepts to encrypt and decrypt information. Cryptography plays a major role in securing communications between IT infrastructure, computer systems, and software. It’s also one of the foundational technologies behind blockchain, a distributed ledger system that secures its transactions through cryptographic hash functions.

How much does it cost to hire a cryptographer?

The first step to determining the cost to hire a cryptographer will be to define your needs. Rates can vary due to many factors, including expertise and experience, location, and market conditions.

Cost factor #1: project scope

The first variable to consider when determining scope is the nature of the work that needs to be completed. Not all cryptography projects are created equal. Setting up basic encryption keys to handle authentication within a mobile app will typically take less time than creating your cryptographic system for a new blockchain technology. 

Tip: The more accurately your job description describes the scope of your project, the easier it will be for talent to give you accurate cost estimates and proposals.

Cost factor #2: cryptography experience

Choosing the right level of expertise for the job is closely tied to how well you determined the scope of your project. You wouldn’t need an advanced cryptographer to leverage an existing blockchain technology such as Ethereum to set up a single smart contract. On the other hand, decrypting your company’s files after a ransomware attack will require an expert ethical hacker. 

Beyond experience level, you need to consider the type of experience the talent possesses. The following table breaks down the rates of the typical types of cryptographers you can find on Upwork.

Rates charged by cryptographers on Upwork

Types of Cryptographers

Description

Hourly Rate

Cybersecurity consultant 

Leverages ciphers, algorithms, and encryption solutions to secure communications between IT infrastructure, software, and devices.

$30-80+

Blockchain expert

Leverages cryptography to design and implement blockchain solutions such as cryptocurrencies, smart contracts, and smart supply chains. 

$40-80+

Ethical hacker

Leverages cryptography to decrypt files, recover lost data, or harden security systems through security testing. 

$60-90+


 

Cost factor #3: location

Location is another variable that can impact a cryptographer’s cost. It’s no secret that you can leverage differences in purchasing power between countries to gain savings on talent. But it’s also important to factor in hidden costs such as language barriers, time zones, and the logistics of managing a remote team. The real advantage to sourcing talent remotely on Upwork is the ability to scan a global talent pool for the best possible person for the job. Location is no longer an obstacle. 

Cost factor #4: independent contractor vs. agency

The final variable regarding talent cost is hiring an independent contractor vs. an agency. An agency is often a “one size fits all” model, so you’ll often have access to a designer, a project manager, an engineer, and more. When hiring individuals you have total autonomy regarding who is responsible for which part of the project, but you’ll need to source each of those skills separately.

The trade-off between hiring individuals vs. hiring an agency is the level of administrative overhead you incur personally in coordinating tasks among all members of the team. Project scope and personal preference will determine which style is a better fit for your needs.

Cryptography Tips and Best Practices

Encrypt sensitive information in transit

Sensitive data such as personally identifiable information (PII), transactions, and trade secrets should be safeguarded by encryption whenever possible. When information is in transit, such as through API gateways between apps via transport protocols (e.g., HTTP), an encryption protocol such as TLS (transport layer security) should be used. 

Consider end-to-end encryption (E2EE)

As important as it is to secure information in transit, it’s also important to consider mapping your entire encryption strategy to cover all points across an encryption path including the endpoints. 

Cryptographic keys used to encrypt messages and are stored exclusively at the endpoints. Normally a file can only be decrypted if it can obtain the public key of the other endpoint. However, it’s possible to perform a man-in-the-middle attack in which the decoding key is intercepted in transit to the other player. 

The solution is to use public and private keys to ensure two parties are able to exchange keys with each other without exposing the keys to malicious third parties. If you encrypt a message with your public key, only someone with a matching private key can decrypt it. 

The recipient shares their public key with you to allow you to send an encrypted message to them. This is done to identify both parties. There are many types of E2EE, each with its own weaknesses and strengths, using this concept of public and private key pairs to verify the identity of the other side of a transaction. 

Determine if decentralized E2EE is preferred

There are many aspects of business and industry that ultimately boil down to transactions in a ledger. Sometimes those transactions are financial; other times the transactions are the transfer of information between two parties. With the advent of the blockchain, security specialists have begun to explore its applications to encryption protocols. 

Conventional E2EE messaging apps rely on centralized systems to handle the identity validation of senders and receivers in encrypted transactions. The public key serves as the encryption key and is published to a trusted centralized authority to allow others to send encrypted messages to the owner of the public key. From the perspective of a sender, ownership of the public key is verified by this trusted centralized authority. The centralized authority is responsible for preventing a man in the middle from masquerading as the owner of the public key. But what happens if something about the nature of your data means you can’t trust a third-party centralized authority? 

You can use a blockchain, a distributed ledger technology (DLT), to ensure information transactions are validated for both senders and receivers. Combine DLT with encryption and you get a decentralized public key infrastructure (DPKI). Here’s how it works:

  • Digital signatures consist of two keys: a signing key (private key) and a verification key (public key).
  • Digital signatures for information transactions are recorded on a blockchain as pairs.
  • Anyone can write to the blockchain, which uses cryptography to make it computationally infeasible to alter. 
  • Since the blockchain of information transactions is immutable, and everyone has a copy of the blockchain, it becomes computationally infeasible to commit fraud.

In this way it’s possible to enhance the security of your encryption scheme by relying on the cryptography and transparency of a blockchain to add another layer of security to your encryption. 

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