Enhanced Sink Node Method for Protecting Data of Single Owner

Cloud computing services offer computing, storage, networking, and software. Users can access data from any place and any time, under the control of a cloud service provider, by using cloud storage services. CSPs face challenges in protecting their data in the cloud. Public key cryptography can provide security, confidentiality, and integrity. The Schmidt-Samoa cryptosystem (SSC) is a public key cryptosystem that is based on integer factorization hardness. When applying ENHANCED SINK NODE in the cloud, the cryptosystem takes more time to encrypt and decrypt data. In this research, we propose an enhanced Schmidt-Samoa (SSC) public key cryptosystem to address this problem. The ENHANCED SINK NODE cryptosystem uses four prime numbers, which greatly increases the difficulty of breaking the cryptosystem compared to SSC. Further testing showed that the time needed to perform data encryption and decryption in ENHANCED SINK NODE is shorter, but the time needed to do cryptanalysis in ENHANCED SINK NODE is longer than in SSC. The ENHANCED SINK NODE cryptosystem is very secure and makes data more private.