asymmetric-key algorithm is called EIGamal

1. Another asymmetric-key algorithm is called EIGamal. Do some research and find out some information about this algorithm. What is the difference between RSA and EIGamal?

2. Another asymmetric-key algorithm is based on elliptic curves. If you are familiar with elliptic curves, do some research and find the algorithms based on elliptic curves.

3. To make Diffie-Helman algorithm more robust, one uses cookies. Do some research and find out about the use of cookies in the Diffie-Helman algorithm.