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Signature verification uses the digital signature together with a:

APublic key
BPacked key
CPaired key
DPadded key
Answer & Solution
Correct answer: A. Public key
1. Anyone should be able to check a signature. 2. That means using the key that is published. 3. Signature verification uses a digital signature and a public key. 4. So the answer is a public key. _Source: NIST SP 800-175B Rev. 1, 'Guideline for Using Cryptographic Standards in the Federal Government'_
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