Cryptography Revolution: Security and Privacy Challenges from RSA to the Post-Quantum Era

[Chain Text] The field of Cryptography is quietly undergoing a revolution. From the classic RSA to modern Elliptic Curve Cryptography, and to the latest lattice-based cryptography systems, cryptographic technologies continue to advance. The emergence of Quantum Computers poses a threat to existing cryptographic systems, but it also spurs the development of post-quantum cryptography. Emerging technologies such as zk-SNARKs bring new possibilities to fields like Blockchain. Cryptography is evolving towards greater security and efficiency, and in the future, it will play a larger role in information security, privacy protection, and other areas. As a rapidly developing field, there are still many unknowns in Cryptography waiting for us to explore.