Chen-Hui Jerry Lin

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In recent years, reversible data hiding has attracted much more attention than before. Reversibility signifies that the original media can be recovered without any loss from the marked media after extracting the embedded message. This paper presents a new method that adopts two-level wavelet transform and exploits the feature of large wavelet coefficient(More)
In recent years the study of cryptosystem has shifted noticeably from symmetric to asymmetric key encryptions. One of the more intriguing issues of the research is NTRU encryption system, which is based on ring theory. The security of NTRU always depends on the lattices. Several studies have suggested that it is very difficult to know whether a polynomial(More)
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