Cryptography is the art of securing information through mathematical techniques, ensuring confidentiality, integrity, and authenticity. It plays a crucial role in modern digital communication and cybersecurity.
Key Concepts 🔍
- Encryption Algorithms: Methods like AES, RSA, and ECC transform plaintext into ciphertext.
- Symmetric vs. Asymmetric: Symmetric uses a single key; asymmetric uses a public/private key pair.
- Hash Functions: Convert data into fixed-size hashes (e.g., SHA-256) for verification.
- Digital Signatures: Confirm the sender's identity and data integrity.
Applications 🌐
- Secure online transactions (e.g., HTTPS)
- Protecting sensitive data in databases
- Authentication protocols for devices and users
- Blockchain technology and cryptocurrency
Extend Your Learning 📚
- Explore Introduction to Cryptography
- Dive into Number Theory Basics
- Learn about Modern Cryptographic Protocols