Create a class called AsymmetricKeySignatureVerifier. It should have a single method called verify, which takes in a message, signature, and message digest context and returns a Status depending on whether or not the signature verification occurred as expected.

The class should store a unique_ptr to the verification context that it uses for verification. This context is initialized with a public key that is passed into the constructor of the class.

The class should be unit tested using NIST RS256 vectors to ensure that it properly verifies signed messages.

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