Describe the key differences between classical cryptography and quantum cryptography.

Classical cryptography and quantum cryptography are two fundamentally different approaches to ensuring the security of information transmission and storage. They differ in several key aspects, reflecting the distinct principles and capabilities of classical and quantum systems. Here are the key differences between classical cryptography and quantum cryptography: 1. Basis of Security: - Classical Cryptography: Classical cryptographic systems rely on mathematical algorithms and computational complexity to ensure security. The security of classical encryption methods, such as RSA or AES, is based on the difficulty of solving certain mathematical problems, like factoring large numbers or discrete logarithms. The security of classical cryptography can be compromised if powerful quantum computers emerge, as they could efficiently solve these problems using algorithms like Shor's algorithm. - Quantum Cryptography: Quantum cryptography, on the other hand, is based on the fundamental principles of quantum mechanics, primarily the properties of quantum states like superposition and entanglement. It provides unconditional security, meaning that the security is guaranteed by the laws of physics rather than the computational complexity of solving mathematical problems. Quantum cryptography is not susceptible to attacks by quantum computers, making it ....