LorranSutter / Intro-BC-Security-Practices

Labs for BCDV1002 - Intro to Blockchain - Security Practices

Intro to Blockchain - Security Practices

Labs for the course BCDV1002 - Introduction to Blockchain - Security Practices from Blockchain Development program from George Brown College

📝 Course outline

This course covers a set of security best practices and possible flaws in developing smart contracts.

• Lesson 01 - Cryptographic Primitives

  • Randomness, hash functions and signatures.
  • Learn how to create a valid Ethereum address.

• Lesson 02 - Blockchain Architecture

  • Transactions, blocks and nodes, interfaces
  • Simulate an Ethereum transaction with ganache-cli and metamask.

• Lesson 03 - Solidity Programming

  • Structure, programming, data-structures
  • Security practices for smart contracts using remix.

• Lesson 04 - Smart Contract Security

  • Threat models, contract interactions, on-chain randomness, re-entrancy
  • Perform a hack exploring smart contracts flaws.

• Lesson 05 - Full Stack Security

  • Input handling, on-chain/off-chain
  • Modify a smart contract and an off-chain program to make them secure preventing replay attacks and cross-contract spends.

💻 Technologies

• Ethers.js - interact with smart contracts
• Ethereumjs-util - utility functions for Ethereum
• Ganache-CLI - blockchain emulator
• Metamask - crypto wallet
• Remix - suite of tools for smart contracts

🍪 Credits

• Doug Hoyte - course website for BCDV1002