How can signatures remain valid beyond the expiration dates of their keys, or, How do you verify a 20-year-old signature?
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Is the use of dsa covered by any patents?
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Is cryptography exportable from the U.S.?
What role does the NSA play in commercial cryptography?
What are the prospects for theoretical factoring breakthroughs?
Are certifying authorities susceptible to attack?
Is DSS secure?
What is safer?
What are LEAFs ?
What are ANSI X9 standards ?
what is cryptography?
What is the legal status of documents signed with digital signatures?