Here we use a well-known cryptosystem, which introduced in late 90s as a part of PhD
Thesis. This cryptosystem is a probabilistic asymmetric algorithm, so computer nerds
are familiar with the basics. The power of this cryptosystem is based on the fact that
no efficient general method for computing discrete logarithms on conventional computers
is known. In real world it could be used in a situation where there is a need for
anonymity and a mechanism to validate, like election.
What's the name of this cryptosystem?