Which of the following is NOT a purpose of encryption in data transmission?

Verifying user authenticity is not a purpose of encryption in data transmission. While encryption is a critical safeguard for data being transmitted, focusing primarily on protecting the confidentiality and integrity of that data, it does not directly handle user authentication.

The primary role of encryption is to scramble the data in such a way that only authorized parties can read it, thereby preventing interception and maintaining confidentiality. Additionally, encryption can enhance data integrity by ensuring that any alterations to the data during transit would be detected, as decrypted data would not match the original if tampered with.

User authentication, on the other hand, typically involves processes like passwords, biometric scans, or security tokens to confirm an individual's identity before allowing access to a system or data. While encryption may be used in conjunction with authentication protocols to secure the overall process, the two serve distinct purposes within data security.