Maria works as the Chief Security Officer for passguide Inc. She wants to send secret messages to the CEO of the company. To secure these messages, she uses a technique of hiding a secret message…

Encryption transforms a message into an unreadable ciphertext that is still visible and known to exist; it does not hide the message within another medium.

Public-key cryptography is an asymmetric system using key pairs to encrypt and decrypt data; it secures messages by mathematical transformation, not by concealment within a carrier.

Steganography conceals the very existence of a message by embedding it within a carrier medium such as an image, audio file, or text, so that an observer does not know a hidden message is present. Unlike encryption, which makes a message unreadable, steganography makes the message invisible. The phrase 'security through obscurity' directly describes steganography's approach of hiding information in plain sight.

The RSA algorithm is a specific asymmetric encryption algorithm used for secure data transmission; it encrypts data but does not hide its existence inside another message.