Cryptography Essentials

Cryptography is the backbone of blockchain security. It ensures data integrity, privacy, and authenticity in decentralized systems.

Key Concepts

  • Hash Functions: Convert data into a fixed-size string; used for block linking and data integrity.
  • Public-Key Cryptography: Enables secure communication and digital identity.
  • Digital Signatures: Prove ownership and authorize transactions.

Without cryptography, blockchains and Web3 applications would not be possible.