The Quantum computing paradigm shift has changed the way we look at data security these days, especially the long-term security of data. Soon, the fast algorithms will be designed to run on quantum computers which can break some of the most widely used cryptosystems, making them vulnerable. However, to address this issue, Chaos theory is actively being studied as a basis for post-quantum era cryptosystems and advancement has been made in the domain of study. The unique characteristic of chaotic systems can be leveraged to produce highly secure cryptographic systems.