What is the primary purpose of encryption?

The primary purpose of encryption is to protect data from unauthorized access. By converting plaintext into ciphertext, encryption ensures that only those who possess the correct decryption key can access and understand the originally transmitted information. This is vital in securing sensitive information—such as personal identification numbers, credit card details, and confidential business communications—against potential interception by attackers or unauthorized parties.

Encryption plays a critical role in maintaining confidentiality and integrity in data transmission, making it a cornerstone of cybersecurity measures. While compression can aid in transmission speed and data visibility pertains to making data clear and accessible, these are not the fundamental objectives of encryption. Instead, encryption focuses specifically on safeguarding information to ensure that it remains confidential and is only visible to intended recipients.