What does Eric need to deliver a compliant malicious update for an organization's application using public key encryption?

To deliver a compliant malicious update for an organization's application using public key encryption, the individual needs the private key for the signing certificate.

The private key is essential in the process of digitally signing updates or applications to ensure authenticity and integrity. When an update is signed with a private key, it can later be verified by anyone using the corresponding public key. This verification ensures that the update has not been tampered with and is indeed from the legitimate source, in this case, the organization. If someone intends to deliver a malicious update that appears compliant, they would exploit access to the private key to forge the signature, making the update seem legitimate to the application and its users.

In contrast, while the public key and other components are important to the encryption and verification processes, they do not allow for the generation of a valid signature necessary for a malicious update. The organization's encryption algorithm defines how data is encrypted and decrypted, but it does not directly facilitate the signing of an update. Lastly, permissions from a system administrator might be necessary to perform certain actions, but they do not equate to the ability to create a compliant signed update. Thus, access to the private key is crucial for anyone attempting to create a seemingly legitimate malicious update.