Two-Layer Encryption based on Paillier and ElGamal Cryptosystem for Privacy Violation

Abstract

Our life nowadays relies much on technologies and online services net banking, e-voting and so on. So, there is a necessity to secure the data that is transmitted through the internet. However, while performing decryption, it sometimes led to privacy violation so there is need to operate on users encrypted data without knowing the original plaintext.This paper represents the implementation of two-layer cryptosystem using paillier and elgamal algorithm both following asymmetric encryption. It is mainly focusing the challenges of privacy protection and secure utilization of information, where homomorphy encryption is gaining attention. Additive homomorphism is used in paillier cryptosystem which is used in fields like secure biometrics and electronic voting. Elgamal ensures that paillier encrypted data is secured that ensures two-layer encryption.

Nested Levels of Hybrid Cryptographical Technique for Secure Information Exchange

“…In the year 2021, Koundinya and SK [16] have implemented two-layer encryption with the help of two popular asymmetric cryptography such as Paillier and Elgamal cryptography. The Paillier cryptosystem, which was employed for applications like secure biometrics and electronic voting, makes use of additive homomorphism.…”

A New Robust Homomorphic Encryption Scheme Based on Paillier, Residue Number System and El-Gamal

“…In order to evaluate its contribution, it was also compared with similar best-known state-of-the-art cryptosystems. The analysis from tables 3, 4, and 6 shows that the proposed cryptosystem has higher encryption and decryption runtimes, and lower throughput compared to that in (Asiedu & Salifu, 2022) and (Koundinya & Gautham, 2021). Though the proposed cryptosystem has a higher runtime than that in (Asiedu & Salifu, 2022) and (Koundinya & Gautham, 2021), the proposed cryptosystem has an additional layer of encryption which thickens the encryption cryptosystem.…”

“…There is no contradiction that technological advancements, especially in electronic communications, have played a crucial role in shaping the modern age. As the importance of preserving data confidentiality, integrity, authenticity, and non-repudiation in its transmission and storage becomes increasingly vital, cryptography has emerged as a crucial discipline within the field of information technology (Koundinya & Gautham, 2021). Therefore, researchers continue toleverage on various encryption techniques such as Paillier, RSA, ECC, etc.…”

“…With the emergence of cloud computing, there is a need for a more robust and efficient approach to data security in cloud computing (Lenstra & Verheul, 2001). The current state of homomorphic encryption systems, particularly the Paillier encryption system, is plagued by numerous limitations, such as unauthorized access which could lead to potential security breaches, as outlined by (Koundinya & Gautham, 2021). It has been proved by (Asiedu & Salifu, 2022) that, the Paillier Cryptosystem can be compromised through various mathematical attacks without the need to either address its security assumption related to Decisional Composite Residuosity (DCRA) or utilize its private key parameters.…”

A Secure Key Exchange Protocol and a Public Key Cryptosystem for Healthcare Systems

“…In [12,13], a modified algorithm based on the ElGamal and Cramer-Shoups cryptosystems is presented. In [14], a simple, lightweight, and efficient encryption scheme is given.…”