Rivest Shamir Adleman (RSA) is a well-known public-key or asymmetric cryptographic algorithm. It also explains the security vulnerabilities of RSA and how to mitigate them. This article describes RSA, how it works, and its major applications. While RSA has some vulnerabilities, it is still utilized for various applications, like digital signatures to authenticate the source of a message. It provides a secure method for transmitting sensitive data over the Internet. RSA is a popular and secure cryptographic algorithm that encrypts and decrypts data.