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A DNA-templated copper nanoparticle (CuNP) probe has been developed for the determination of the human immunodeficiency virus oligonucleotide (HIV-DNA). The function of the probe relies on affinity binding-induced DNA hybridization associated with the use of double G-quadruplexes. Double-stranded DNA (dsDNA) with poly(AT-TA) bases was used as a template for synthesis of dsDNA-CuNPs. These have weak...
Recently, Libert and Quisquater proposed an efficient signcryption scheme based on the hardness of q-Diffie-Hellman problems in Gap Diffie-Hellman groups. Their scheme is quite efficient: the signcryption operation has almost the same cost as an ElGamal encryption while the reverse operation only requires one pairing evaluation and three exponentiations. However, Tan showed that their scheme is not...
Mobile agents are autonomous software entities that are able to migrate across different execution environments through network. Proxy signcryption is very suitable for protecting mobile agents. However, previous proposed proxy signcryption schemes mainly make use of certificate-based public key system and identity-based public key system. In this paper, we present a secure mobile agent protocol using...
In a (t, n) threshold proxy signature scheme, which is a variant of the proxy signature scheme, the proxy signature key is shared among a group of n proxy signers delegated by the original signer. Any t or more proxy signers can cooperatively sign messages on behalf of the original signer. Recently, Qian et. al. proposed a pairing-based threshold proxy signature scheme. However, we show that their...
In this paper, the cleaning of silicon after CMP (chemical mechanical polishing) in ULSI was studied utilizing preferential adsorption knowledge. On the basis of analyzing adsorption state of contaminated particles on polished silicon wafer and interrelated adsorption theory, the preferential adsorption model is put forward: t=kr 2 (f 1 f 2 S). Non-ion surfactant is chosen...
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