Browsing by Author "Mohamad Maulana Magiman"
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Publication A Cubic El-Gamal Encryption Scheme Based On Lucas Sequence And Elliptic Curve(Union of researchers of Macedonia, 2021) ;Tze Jin Wong ;Lee Feng Koo ;Fatin Hana Naning ;Ahmad Fadly Nurullah Bin Rasedee ;Mohamad Maulana MagimanMohammad Hasan Abdul SatharThe public key cryptosystem is fundamental in safeguard communication in cyberspace. This paper described a new cryptosystem analogous to El-Gamal encryption scheme, which utilizing the Lucas sequence and Elliptic Curve. Similar to Elliptic Curve Cryptography (ECC) and Rivest-Shamir-Adleman (RSA), the proposed cryptosystem requires a precise hard mathematical problem as the essential part of security strength. The chosen plaintext attack (CPA) was employed to investigate the security of this cryptosystem. The result shows that the system is vulnerable against the CPA when the sender decrypts a plaintext with modified public key, where the cryptanalyst able to break the security of the proposed cryptosystem by recovering the plaintext even without knowing the secret key from either the sender or receiver. - Some of the metrics are blocked by yourconsent settings
Publication On The Security Comparison Of Luc-Type Cryptosystems Using Chosen Message Attack(Union of researchers of Macedonia, 2020) ;Tze Jin Wong ;Lee Feng Koo ;Fatin Hana Naning ;Pang Hung Yiu ;Ahmad Fadly Nurullah Rasedee ;Mohamad Maulana MagimanMohammad Hasan Abdul SatharThe security of LUC type cryptosystems was investigated. In this study, chosen message attack was employed to analyze the security of LUC, LUC3 and LUC4,6 cryptosystems. The cryptanalyst invades the system by obtaining a signature without the sender’s consent, and use it to break the system. Finding shows that LUC4,6 cryptosystem is more resilient against chosen message attack compare with LUC and LUC3 cryptosystems.