# What is the main purpose of using Boolean Circuit Model in Homomorphic Encryption?

Why do we use or have Boolean Circuit Model is it because since it uses gates and bits we could adapt it into a hardware model?

• Could you not think simple reasoning? We consider building FHE circuit $\mathcal{C}$ with this model. It is not exactly the Hardware Nand model. – kelalaka Sep 2 '19 at 10:47
• Compared to which alternative? – Maeher Sep 2 '19 at 11:42
• Compare to using Modular Arithmetic and Approximate Number i guess? – fallere456 Sep 2 '19 at 11:52
• Some things you may need to look up, is what are the alternative models and it should answer your question. Try looking into computational complexity first – user679128 Sep 2 '19 at 21:00