How can signatures remain valid beyond the expiration dates of their keys, or, How do you verify a 20-year-old signature?
TCS,
792Post New Cryptography General Questions
What other stream ciphers are there?
Can DES be exported from the U.S.?
How is cryptography applied ?
What are the prospects for a theoretical breakthrough in the discrete log problem ?
What is authenticated diffie-hellman key agreement?
Which cryptologic mechanisms can be used to protect integrity?
What are elliptic curve cryptosystems ?
What are covert channels ?
What are the prospects for theoretical factoring breakthroughs?
What is the factoring problem ?
What is the significance of one-way functions for cryptography?
What are some other hard problems ?
How can signatures remain valid beyond the expiration dates of their keys, or, How do you verify a 20-year-old signature?
What is the role of the United States government in cryptography ?
How is rsa used for authentication in practice? What are rsa digital signatures?