A software development company wants to implement a digital rights management solution to protect its intellectual property. Which of the following should the company implement to enforce software…

Transport encryption secures data in transit between endpoints but does not enforce ownership rights or licensing restrictions on software.

IPsec is a network-layer protocol suite for securing IP communications and is not designed to manage software licensing or intellectual property rights.

Non-repudiation proves that a party performed an action and cannot deny it, but does not by itself restrict or enforce software usage rights.

PKI provides the cryptographic framework of certificate authorities, digital certificates, and public/private key pairs used to sign, verify, and enforce software licenses. DRM systems use PKI to issue unique licenses bound to users or devices, verify authenticity of software, and revoke access, making it the foundational technology for protecting intellectual property through digital rights enforcement.