About Lesson
Cryptography in Blockchain and Decentralized Systems
Blockchain technology heavily relies on cryptographic techniques to maintain a decentralized and secure ledger.
-
Hashing in Blockchain:
- Hash functions ensure data integrity by linking blocks in the chain. A change in one block invalidates all subsequent blocks.
-
Public and Private Keys:
- Used to verify transactions and secure wallets in blockchain systems.
- Digital signatures authenticate transactions and prevent double-spending.
-
Smart Contracts:
- Self-executing contracts with the terms of the agreement directly written into code.
- Cryptography ensures that smart contracts are tamper-proof and enforceable.