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Understanding `crypto.randomBytes` and `ethers.randomBytes`: A Comparison

Tutorial October 24, 2024

  • crypto.randomBytes is part of Node.js, so it requires no external dependencies. This makes it ideal for Node.js environments where minimal dependencies are desired.
  • ethers.randomBytes requires the installation of the ethers.js library, which is primarily designed for blockchain-related projects. This is useful if you're already working with Ethereum, but it adds an external dependency to the project.
  • crypto.randomBytes:
  • Takes a single argument specifying the number of bytes.
  • Always requires a size input; no default value is provided.
  • ethers.randomBytes:
  • Optionally takes the number of bytes to generate.
  • If no argument is provided, it defaults to generating 32 bytes.