The correct answers are Evidence that the file has not been altered since signing and Confirmation of the publisher's identity.

A digital signature provides integrity protection. The signer computes a cryptographic hash of the file and signs that hash with a private key. When the signature is verified the verifier recomputes the hash and checks the signature against the signer's certificate so any post signing modification is detectable.

Code signing also provides a way to link a public key to a claimed identity through a certificate that is typically issued or vouched for by a certificate authority. That certificate and the signature let you confirm who signed the file which gives confirmation of the publisher's identity.

Assurance that the package is free from vulnerabilities is incorrect because signing does not scan or test the code for security flaws. A valid signature only indicates origin and integrity and it cannot guarantee that the software contains no vulnerabilities.

Assurance that the program will execute without errors is incorrect because a signature does not attest to functional correctness or runtime behavior. Execution success depends on code quality, environment, and dependencies and not on the presence of a signature.

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