Longer keys are more difficult to crack. Most symmetric keys today are 100–300 bits long. Why don’t systems use far longer symmetric keys—say, 1,000- bit keys? Identify potential security threats...

Longer keys are more difficult to crack. Most symmetric keys today are 100–300 bits long. Why don’t systems use far longer symmetric keys—say, 1,000- bit keys?

Identify potential security threats associated with authentication via digital signatures and digital certificates. Explain each and describe how you would address each threat.