What if the certifying authority's key is lost or compromised?
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Who issues certificates and how?
What is blowfish?
What are interactive proofs and zero-knowledge proofs ?
What is a hash function? What is a message digest?
What are LEAFs ?
How are certificates used?
What is a PKI ?
What is tamper-resistant hardware ?
What are the advantages and disadvantages of public-key cryptography over secret-key cryptography?
What is the current status of DSS?
What is safer?
What is authentication? What is a digital signature?