Homomorphic Cryptography and Its Applications in Various Domains

Abstract

Homomorphic encryption (HE) is an encryption technique where operations are performed on ciphertext. This encryption method can be used in varieties of applications by using public key algorithms. For transferring data from one place to another, there are various encryption algorithms for storage of data and securing the operations, but they do not preserve privacy. HE is useful in various applications in which HE performs the different operations on encrypted data and provides results after calculations performed directly on the plaintext. Nowadays, security of information and calculations to deal with the data of big business has expanded massively. In any case, a basic issue emerges when there is a necessity of registering on such encrypted information where protection is built up. This paper represents homomorphic cryptosystems for preserving security, properties, and categories of homomorphic encryption. In addition to this, privacy-preserving applications of homomorphic cryptosystems in the field of cloud computing, private information retrieval, and data aggregation in wireless sensor network are also presented.