What is asymmetric cryptography?
Could you elaborate on the concept of asymmetric cryptography? As a field specialist in cryptocurrency and finance, I'm curious to understand its fundamental principles and how it is utilized in the digital currency landscape. Specifically, I'm interested in how it differs from symmetric cryptography, the types of cryptographic algorithms it employs, and the role it plays in ensuring the security and integrity of transactions in the blockchain environment. Additionally, I'd like to know about any challenges or limitations associated with asymmetric cryptography and how they are addressed.