For securing our own systems, encryption got the major interest, especially when talking about homomorphic encryption, which has spread like wildfire. Therefore, in this study, we will be presenting different known cryptosystems based, in a great part of its construction, on the homomorphic encryption, all joined with other techniques to enhance the cryptosystem performance and the privacy ratio. In addition, the homomorphic encryption has the feature to be highly adequate with any field it is used in, giving numerous advantages and a tremendous performance. Hence, the following survey presents different domains using homomorphic encryption and a final comparison between the adopted techniques.

为了保护我们自己的系统，加密引起了人们的极大兴趣，特别是在谈论同态加密时，这种加密像野火一样迅速蔓延。因此，在这项研究中，我们将在同构加密的大部分结构中介绍不同的已知密码系统，并将其与其他技术结合起来以提高密码系统的性能和隐私率。此外，同态加密还具有在任何使用领域都足够高的特性，具有众多优势和出色的性能。因此，以下调查介绍了使用同态加密的不同域以及所采用技术之间的最终比较。