APPLICATION OF LAMPORT DIGITAL SIGNATURE SCHEME INTO THE STATION-TO-STATION PROTOCOL
Md Nizam Udin1*, Farah Azaliney Mohd Amin2, Nor Ainaa Mat Abu3, Siti Nurfazliana Mohamad Sarif4 and Intan Nur Athirah Binti Mohammad Zuki5
,Faculty of Computer and Mathematical Sciences, Universiti Teknologi MARA Cawangan Negeri Sembilan, Kampus Seremban 70300 Seremban, Negeri Sembilan, Malaysia
1*This email address is being protected from spambots. You need JavaScript enabled to view it., 2This email address is being protected from spambots. You need JavaScript enabled to view it., 3This email address is being protected from spambots. You need JavaScript enabled to view it., 4This email address is being protected from spambots. You need JavaScript enabled to view it., 5This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
In cryptography, the key exchange protocol is very important before starting secure communication. Both parties will use an asymmetric key algorithm to exchange their keys for encryption and decryption. One of the methods to securely exchange the keys is Diffie-Hellman Key Exchange (DHKE) protocol. DHKE allows both parties to exchange their keys over the insecure public channel safely. However, DHKE protocol does not authenticate the message, making it easily exposed to third-party interruptions like Man-in-the-Middle (MitM) attack. Therefore, Station to Station (STS) protocols was introduced after modifying the DHKE protocol and adding authentication elements. Thus, this paper proposes to provide the authentication of the STS protocol by using Lamport Digital Signature Scheme. Lamport Digital Signature Scheme, also known as Lamport one-time signature scheme, gives very strong security because it can be built from any cryptographically secure one-way function and usually uses a cryptographic hash function. The results from the study are STS protocol algorithms that provide a verification scheme using the Lamport Digital Signature Scheme. As a result, both parties will obtain a common key for encryption and decryption, in which both parties play a role by using their respective digital signature for verification within the STS of this protocol.
Keywords: Lamport Digital Signature Scheme, Station to Station Protocol, Diffie-Hellman Key Exchange, Man in the Middle Attack and One-way Function, Public Key Cryptography
Published On: 1 October 2022
