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Based on zero-knowledge proof of digital signature

Author: ShuZuo
Tutor: LiaoWenJian
School: WRI
Course: Communication and Information System
Keywords: Hash function Zero-knowledge proof Digital signature Confirmed that the digital signature Admittedly RSA DSA
CLC: TN918.1
Type: Master's thesis
Year: 2009
Downloads: 47
Quote: 0
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Abstract


Modern Cryptography is a study of information security disciplines , the use of data encryption, digital signatures , authentication, key exchange and other security technology to protect the security of network communications . In the network security system , authentication is network security system first line of defense , the hash function , zero-knowledge proof and digital signature authentication system technology is the most important technology , but also the research and application of modern cryptography important branch . Research and design high-performance security , the implementation of the mechanism is simple authentication system should start with the core technology of cryptography , designed with practical, reliable and efficient solutions in order to achieve the network information security, which is the subject of study purposes. In this paper, authentication technology with a focus on key technologies , the main results are as follows : 1. Proposed MD -structure configuration hash function security flaws on this topic using a hash function to make the safety restrictions ; 2 . Separately proposed the RSA DSA digital signature digital signature and zero-knowledge proof scheme . New scheme is a zero knowledge proof , and the combination of digital signatures , digital signatures to ensure safety and prevent any spread of the digital signature , the signer does not directly provide the signature of the message , but to provide it has a digital signature of the message is zero-knowledge proof . Scheme can be widely used in digital copyright protection ; 3 . Combined zero-knowledge proof and digital signature related theoretical foundation, improved zero-knowledge proof based on proven digital signature scheme . Improvement program is to improve the function of undeniable digital signature , digital signatures to prevent any spread , while also avoiding the undeniable digital signature design flaw , that is, when the signer subjectively or objectively verify the signature unwilling to participate in verifying the signature can not be when the signer's legal signature can not be verified. Meanwhile, the program has a non- metastatic and zero- knowledge, and its security features are ordinary digital signatures are not available . In certain security strategy, confirmed the digital signature can be verified by a third party into a normal digital signature and published , any holder of the message , the ordinary digital signature , and the signer's public key of the subject , can be effective for signature of authentication.

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