Study of Undeniable Signatures Schemes based on Zero-Knowledge Proof

초록

The main idea is to protect the signer of a document against the document being digitally distributed without the cooperation of signer. This paper proposes a new scheme of undeniable signature, which is so effective and improved D. Chaum's scheme. And our scheme which is zero-knowledge proved by using one-way function and partition-selection method, shows that its communication(challenge-response) only needs much fewer times during the confirmation protocol and disavowal protocol respectively, being very useful for wireless network environment. In the meantime, our scheme allows the verifier to verify that the signature is valid, while t he signer doesn't know the original message and the signature, to preserve the privacy of the verifier.

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