RSA encryption is a widely used method of securing digital data. It's named after its inventors: Rivest, Shamir, and Adleman, and it’s based on some clever math involving prime numbers and modular arithmetic. Here’s a simple breakdown: 🔐 What is RSA Encryption? RSA is a public-key cryptosystem. That means: Anyone can encrypt a message using your public key. But only you can decrypt it with your private key. Core Idea: RSA's security relies on the difficulty of factoring large numbers — specific

【公開鍵暗号システム】RSA暗号（８分＋おまけ５分）