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Secret sharing scheme and its application in the digital signature

Author: WuYan
Tutor: LiZiChen
School: Henan Polytechnic University
Course: Applied Computer Technology
Keywords: Secret Sharing Threshold Secret Sharing Threshold Signature Cryptography
CLC: TN918.1
Type: Master's thesis
Year: 2009
Downloads: 27
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Abstract


Since Blakley and Shamir in 1979 , respectively, since the proposed secret sharing scheme , secret sharing scheme for research has been widespread concern . Now, the secret sharing system has become the field of modern cryptography is a very important branch of information security is an important research content. A (t, n) threshold secret sharing scheme is a secret shared among n participants , when t or t or more participants can recover the joint shared secret , while fewer than one of the participants combined t was unable to get any information shared secret . The secret sharing scheme applied to the digital signature to form a threshold signature . Threshold signature is the signature key allows group members to share , as long as the t or t or more members of the union ( membership is anonymous or public ) can generate a valid signature on behalf of groups . This door threshold secret sharing system and its application in the digital signature on a detailed study . Specifically, first , describing the threshold secret sharing system, the basic ideas and research areas of focus. Secondly, discussed several typical scenario , pointing out the defects and design a weighted participants of different threshold secret sharing scheme . Once again, the door threshold signature status and hot areas in-depth analysis , door threshold signature scheme summarizes the characteristics . Finally, several were analyzed and based on discrete logarithm RSA cryptosystem based threshold signature scheme security, to construct a non- trusted threshold signature scheme and its security is analyzed. The proposed scheme is proven safe, there is a certain value .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Confidentiality of communications and communications security > Theory
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