Symmetric/Asymmetric Encryption and Digital Signatures
Learn how symmetric encryption relies on randomization while asymmetric encryption uses complex mathematical problems for key generation. Understand public-key systems, including trapdoor functions like RSA and Diffie-Hellman key exchange, and discover how digital signatures ensure data integrity without confidentiality. This lesson builds foundational security knowledge for distributed systems design.
As we have already explained, symmetric cryptography is mainly based on randomization. On the other hand, asymmetric cryptography does not rely only on randomization because it allows an easy computation in the forward direction (e.g., generating the key pair), but makes the inverse computation extremely hard (e.g. discovering the private key from the ...