By a News Reporter-Staff News Editor at Computers, Networks & Communications -- Investigators discuss new findings in Information Technology - Information and Data Encoding and Encryption. According to news originating from Anhui, People’s Republic of China, by VerticalNews correspondents, research stated, “The Galois/Counter Mode of operation (GCM) is a widely used nonce-based authenticated encryption with associated data mode which provides the birthday-bound security in the nonce-respecting scenario; that is, it is secure up to about 2(n/2) adversarial queries if all nonces used in the encryption oracle are never repeated, where n is the block size. It is an open problem to analyze whether GCM security can be improved by using some simple operations.”
Financial support for this research came from National Natural Science Foundation of China.
Our news journalists obtained a quote from the research from the China University of Science and Technology, “This paper presents a positive response for this problem. Firstly, we introduce two close to optimally secure pseudorandomfunctions and derive their security bound by the hybrid technique. Then, we utilize these pseudorandomfunctions that we design and a universal hash function to construct two improved versions of GCM, called OGCM-1 and OGCM-2. OGCM-1 and OGCM-2 are, respectively, provably secure up to approximately 2(n)/67(n-1)(2) and 2(n)/67 adversarial queries in the nonce-respecting scenario if the underlying block cipher is a secure pseudorandom permutation.”
According to the news editors, the research concluded: “Finally, we discuss the properties of OGCM-1 and OGCM-2 and describe the future works.”
For more information on this research see: Close to Optimally Secure Variants of GCM. Security and Communication Networks , 2018;():1-12. Security and Communication Networks can be contacted at: Wiley-Hindawi, Adam House, 3RD Fl, 1 Fitzroy Sq, London, Wit 5HE, England. (Wiley-Blackwell - http://www.wiley.com/; Security and Communication Networks - http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1939-0122)
The news correspondents report that additional information may be obtained from P. Zhang, China University of Science & Technology, CAS, Key Lab Electromagnet Space Informat, Hefei 230027, Anhui, People’s Republic of China. Additional authors for this research include H.G. Hu and Q. Yuan.
The direct object identifier (DOI) for that additional information is: https://doi.org/10.1155/2018/9715947. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.
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CITATION: (2018-04-19), Reports from China University of Science and Technology Add New Data to Findings in Information and Data Encoding and Encryption (Close to Optimally Secure Variants of GCM), Computers, Networks & Communications, 528, ISSN: 1944-1568, BUTTER® ID: 015511363
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