How Encryption Keeps Your Data Safe

The video explores the evolution of encryption from ancient Spartan methods to modern digital ciphers. It explains classical ciphers like transposition and substitution, highlighting their weaknesses. The video discusses Claude Shannon's idea of alternating ciphers, which laid the foundation for modern cryptography. It also covers the development of digital ciphers, such as block and stream ciphers, and their importance in securing information today.

What was the standard Spartan solution for sending secret messages?

How do modern encryption methods differ from ancient ones?

Explain the two main components of any coded message.

What is a transposition cipher and how does it work?

Describe the Caesar cipher and its method of encryption.

What are the weaknesses of substitution and transposition ciphers?

How did Claude Shannon's ideas improve cryptography?