RSA encryption is a widely used method for securing data through a process called public-key cryptography. It relies on two keys: a public key, which anyone can use to encrypt a message, and a private key, which only the intended recipient possesses to decrypt the message. This ensures that only the intended recipient can read the information. The security of RSA encryption is based on the mathematical difficulty of factoring large prime numbers. When two large prime numbers are multiplied together, it creates a product that is easy to compute but hard to reverse-engineer. This makes it challenging for unauthorized users to decrypt messages without the private key.