# A Novel Digital Signature Scheme for Advanced Asymmetric Encryption Techniques
###### Abstract  
Digital signature schemes are practical mechanisms for achieving message integrity, authenticity, and non-repudiation. Several asymmetric encryption techniques have been proposed in the literature, each with its proper limitations. RSA and El Gamal prove their robustness, but are unsuitable in several domains due to their computational complexity. Other asymmetric encryption schemes have been proposed to provide a cloud homomorphic encryption service, where the researchers focused only on how to ensure the homomorphic property. This paper proposes a new digital signature scheme dedicated to a family of encryption techniques. The proposal consists of two parts: the first focused on the secret key, and the second focused on the public key. Signature validity checking was performed by multiplying these two parts to reform again the sender's public key, then comparing the result with the decrypted message. The validation of the decrypted message guarantees data integrity, where the signer public key is used to ensure authenticity. The proposed scheme takes a shorter execution time for the entire signature operation, including signing and verification, compared to other modern techniques. The analysis showed its robustness against private key recovery and forgery attacks. The implementation results of the proposed scheme showed promising performance in terms of complexity and robustness. The results confirmed that the proposed scheme is efficient and effective for signature generation and verification. secure IoT communication; privacy-preserving; data integrity verification; asymmetric authentication; modern data encryption +
Footnote †: journal: Applied Sciences  
in [1], based on software-defined networking and deep learning techniques. The proposed system utilizes a deep learning classifier to detect anomalies in the IoT without imposing security profiles on the IoT devices themselves. The system was implemented and tested in a simulated environment, and the results were evaluated using various performance metrics and compared against other relevant methods. Cryptography aims to protect private information from unauthorized access, ensuring data integrity and authentication while offering other services [2; 3; 4]. The encryption method plays a crucial role in guaranteeing security by encrypting messages so that they are clear only to the sender and intended recipient [5; 6; 7; 8]. Unfortunately, some standard encryption algorithms are difficult to implement in resource-constrained environments due to their implementation scale, heavy complexity, and power consumption [9]. To this end, lightweight encryption techniques are needed to balance the implementation cost, speed, security performance, and power consumption on resource-constrained devices, i.e., the IoT and wireless sensor networks. Lightweight cryptography is designed to be simpler and faster than traditional cryptography for securing resource-limited devices such as smart cards, radio frequency identification (RFID) tags, sensor networks, and embedded systems [9; 10; 11; 12]. Meanwhile, lightweight asymmetric encryption techniques may not offer the same security level and functionality as more complex algorithms. However, they can still be helpful in specific contexts where performance and efficiency are critical. Hence, when selecting an asymmetric encryption technique, it is essential to carefully evaluate the trade-offs between security, functionality, and computational resources. The digital signature is an essential element in asymmetric encryption. It offers several services, including authenticity, integrity, and non-repudiation of a digital message. Using a digital signature, the message receiver can verify its identity, guarantee that the message has not been tampered with during transmission, and prevent the denial of having sent the message. Several digital signature schemes have been proposed to offer practical mechanisms for achieving message integrity [13; 14], authenticity, and non-repudiation.