How can signatures remain valid beyond the expiration dates of their keys, or, How do you verify a 20-year-old signature?
TCS,
456Post New Cryptography General Questions
Does RSA help detect altered documents and transmission errors?
Is use of DSS covered by any patents?
At what point does an attack become practical ?
What is SET ?
What are some other hard problems ?
Is DSS secure?
What is the GSS-API ?
What is the current status of DSS?
What is a linear feedback shift register?
What are proactive security techniques ?
Why use RSA rather than DES?
What are ANSI X9 standards ?
How is rsa used for authentication in practice? What are rsa digital signatures?
What are the advantages and disadvantages of public-key cryptography over secret-key cryptography?
Who issues certificates and how?