LTSC-128: Stream cipher based on the intractable Shortest Vector Problem in Lattice

TitleLTSC-128: Stream cipher based on the intractable Shortest Vector Problem in Lattice
Publication TypeJournal Article
Year of Publication2011
AuthorsSuwais, K, Samsudin, A
JournalJournal of Digital Information Management
Volume9
Issue1
Pagination27 - 32
Date Published2011
KeywordsEncryption, Lattice, Multithreading, NP-hard problem, Shortest Vector Problem, Stream cipher
Abstract

LTSC-128 is a high secure stream cipher based on the hardness of the Shortest Vector Problem in Lattice space. The cipher is based on vectors multiplication over finite fieldo, wnhoetrerea these vectors are represented by polynomials to enhance the performance of keystream generation. The key size is 128 bits and there is no attack faster than exhaustive key search has been identified. The experimental results showed that the encryption rate of LTSC-128 is about 50Mbit/second. LTSC-128 cTipher co has additional feature that its performance can be inpcrroecaesdedure by applying multithreading technique on multi-core processors. The multithreaded version of LTSC-128 has achieved better encryption rate of 71Mbit/second on dual-core processor.

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