This letter proposes fingerprint-based key binding/recovering with fuzzy vault. Fingerprint minutiae data and the cryptographic key are merged together by a multivariable linear function. First, the minutiae data are ...This letter proposes fingerprint-based key binding/recovering with fuzzy vault. Fingerprint minutiae data and the cryptographic key are merged together by a multivariable linear function. First, the minutiae data are bound by a set of random data through the linear function. The number of the function’s variables is determined by the required number of matched minutiae. Then, a new key de- rived from the random data is used to encrypt the cryptographic key. Lastly, the binding data are protected using fuzzy vault scheme. The proposed scheme provides the system with the flexibility to use changeable number of minutiae to bind/recover the protected key and a unified method regardless of the length of the key.展开更多
铁皮石斛(Dendrobium officinal Kimura et Migo)兼具药用价值,不仅含有人体必需氨基酸,还含有多糖、黄酮类、生物碱等活性成分,具有降血压、降血糖、抗肿瘤等功效。但石斛属植物来源众多、成分差异较大,给铁皮石斛的鉴别带来困难,利用...铁皮石斛(Dendrobium officinal Kimura et Migo)兼具药用价值,不仅含有人体必需氨基酸,还含有多糖、黄酮类、生物碱等活性成分,具有降血压、降血糖、抗肿瘤等功效。但石斛属植物来源众多、成分差异较大,给铁皮石斛的鉴别带来困难,利用指纹图谱技术标记特征物质可以对其鉴别及品质评价提供一定的理论依据。另外,国内外学者已从铁皮石斛中分离鉴定出多糖、黄酮类、生物碱等多种生物活性成分,证实了这些成分的药效并推断其生理作用机制。从多角度总结了近几年铁皮石斛指纹图谱、生物活性成分及作用机制的研究进展情况,以期为铁皮石斛的鉴定及药物开发研究提供一定的科学依据。展开更多
基金Supported by the National Natural Science Foundation of China (No.60472069)
文摘This letter proposes fingerprint-based key binding/recovering with fuzzy vault. Fingerprint minutiae data and the cryptographic key are merged together by a multivariable linear function. First, the minutiae data are bound by a set of random data through the linear function. The number of the function’s variables is determined by the required number of matched minutiae. Then, a new key de- rived from the random data is used to encrypt the cryptographic key. Lastly, the binding data are protected using fuzzy vault scheme. The proposed scheme provides the system with the flexibility to use changeable number of minutiae to bind/recover the protected key and a unified method regardless of the length of the key.
基金Supported by the Science and Technology Development Plan Program of Changchun City of China under Grant No.99011 (长春市科技发展计划) the Application Development Foundation of Nanjing University of China under Grant No.2001-03 (南京大学应用开发基金)
文摘铁皮石斛(Dendrobium officinal Kimura et Migo)兼具药用价值,不仅含有人体必需氨基酸,还含有多糖、黄酮类、生物碱等活性成分,具有降血压、降血糖、抗肿瘤等功效。但石斛属植物来源众多、成分差异较大,给铁皮石斛的鉴别带来困难,利用指纹图谱技术标记特征物质可以对其鉴别及品质评价提供一定的理论依据。另外,国内外学者已从铁皮石斛中分离鉴定出多糖、黄酮类、生物碱等多种生物活性成分,证实了这些成分的药效并推断其生理作用机制。从多角度总结了近几年铁皮石斛指纹图谱、生物活性成分及作用机制的研究进展情况,以期为铁皮石斛的鉴定及药物开发研究提供一定的科学依据。