What is secret sharing?
Q: What is secret sharing?
A: Secret sharing is a way of sharing a secret among many people. Each person knows part of the secret that is shared, but a number of people need to cooperate to rebuild the secret.
Q: Who developed the secret sharing method?
A: Adi Shamir and George Blakley developed the secret sharing method, independently of each other, in 1979.
Q: What example is given where secret sharing is used?
A: The RSA cryptosystem is given as an example where secret sharing is used. It uses a secret key that is distributed among many people, so that no single person can make a signature.
Q: Why is secret sharing important in areas like banks or the military?
A: Secret sharing is important in areas like banks or the military because it provides an extra layer of security. Even if one person's part of the secret is revealed or lost, a number of other people can still reconstruct the secret.
Q: How is secret sharing set up in an easier setup?
A: In an easier setup, the parts of the players can be combined to form the secret, but with each part there is extra information.
Q: What is the difference between the easier secret sharing setup and the other setup?
A: The easier secret sharing setup is less secure from an information theory perspective because guessing the two missing parts will be easier than guessing the secret when no parts are known. The other setup is secure from the point of view of information theory.
Q: Are there different methods of secure secret sharing techniques?
A: Yes, there are different methods of secure secret sharing techniques.
