Convertible ring signature

Lee, K.-C.; Wen, Hsiang-An; Hwang, Tzonelih

doi:10.1049/ip-com:20045283

Cited by 37 publications

(21 citation statements)

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“…Compared with the schemes proposed in Refs. [8,18,32], DRS also solved the problem in which the signer can shift the blame to entities. Later, Wang and Liu [44] introduced a signer-admission ring signature scheme (WL06), which combines the idea of the designated confirmer signatures (DCS) and the designated verifier proofs.…”

Section: Verifiable Ring Signaturementioning

confidence: 92%

“…Gan and Chen [18] proposed an efficient method to transform Rivest's scheme into a verifiable ring signature scheme, in which the actual signer can embed identification information into a socalled subliminal channel. In 2005, Lee et al [32] proposed an efficient convertible ring signature scheme, which not only keeps all properties of a ring signature, but also enables the real signer to turn his ring signature into an ordinary signature by releasing some information.…”

Section: Verifiable Ring Signaturementioning

confidence: 99%

“…[30,31]. Lee et al [32] proposed a convertible ring signature that can withdraw the anonymity. Tsang and Wei [33] constructed the first short linkable ring signature for e-voting and e-cash systems.…”

Section: Introductionmentioning

confidence: 99%

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A survey of ring signature

Wang

Zhang

2008

Front. Electr. Electron. Eng. China

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Ring signature allows specifying a set of possible signers without revealing which member actually produces the signature. This concept was first formalized in 2001 by Rivest, Shamir and Tauman. In this paper, we review the state-of-the-art of ring signature, summarize the study of ring signature schemes in the literature and investigate their relationships with other existing cryptographic schemes. We also describe a large number of extensions, modifications and applications of ring signatures after the original version of this work. Some problems in the study of this field were presented as well. Finally, we discuss a number of interesting open problems and point out the possible future work.

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Section: Verifiable Ring Signaturementioning

confidence: 92%

Section: Verifiable Ring Signaturementioning

confidence: 99%

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A survey of ring signature

Wang

Zhang

2008

Front. Electr. Electron. Eng. China

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“…The convertible ring signature scheme proposed in [4] is the extension of a ring signature scheme proposed in [2]. It deals with only the convertibility of the ring signature scheme.…”

Section: A Related Workmentioning

confidence: 99%

“…It enables any individual to spontaneously conscript arbitrarily n − 1 entities and generate a publicly verifiable 1-out-of-n signature on behalf of the whole group (called a ring), yet the actual signer remains anonymous. Many extensions of a standard ring signature, such as linkable ring signature [3], convertible ring signature [4], separable ring signature [5], [6], threshold ring signature [7], ID-based ring signature [8], proxy ring signature [9], ring authenticated encryption [10], conditionally anonymous ringsignature [11] have been proposed in the literature. Ring signature and its variants have been used in many applications such as leaking secrets [2], designated verifier signature [2], anonymous identification/authentication for ad hoc groups [7], e-voting [3], e-cash, attestation in [12], bidderanonymous english auction [13] and so on.…”

Section: Introductionmentioning

confidence: 99%

Controllable Ring Signatures and Its Application to E-Prosecution

Gao¹,

Wang²,

Wang³

et al. 2013

JCP

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This paper introduces a new concept called controllable ring signature which is ring signature with additional properties as follow. (1) Anonymous identifica-tion: by an anonymous identification protocol, the real signer can anonymously prove his authorship of the ring signature to the verifier. And this proof is non-transferable.(2) Linkable signature: the real signer can generate an anonymous signature such that every one can verify whether both this anonymous signature and the ring signature are generated by the same anonymous signer. (3) Convertibility: the real signer can convert a ring signature into an ordinary signature by revealing the secret information about the ring signature. These additional properties can fully ensure the interests of the real signer. Especially, compared with a standard ring signature, a controllable ring signature is more suitable for the classic application of leaking secrets. We construct a controllable ring signature scheme which is provably secure according to the formal definition. As an application, we design a E-prosecution scheme based on this controllable ring signature scheme and show its security. 2013 ACADEMY PUBLISHER. Abstract-This paper introduces a new concept called controllable ring signature which is ring signature with additional properties as follow. (1) Anonymous identification: by an anonymous identification protocol, the real signer can anonymously prove his authorship of the ring signature to the verifier. And this proof is non-transferable.(2) Linkable signature: the real signer can generate an anonymous signature such that every one can verify whether both this anonymous signature and the ring signature are generated by the same anonymous signer. (3) Convertibility: the real signer can convert a ring signature into an ordinary signature by revealing the secret information about the ring signature. These additional properties can fully ensure the interests of the real signer. Especially, compared with a standard ring signature, a controllable ring signature is more suitable for the classic application of leaking secrets. We construct a controllable ring signature scheme which is provably secure according to the formal definition. As an application, we design a E-prosecution scheme based on this controllable ring signature scheme and show its security.

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Convertible ring signatures with gradual revelation of non‐signers

Tso

2011

Security Comm Networks

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A ring signature enables a member of a group to sign any message on behalf of the group while hiding the identity of the real signer. On the other hand, a convertible ring signature is a kind of ring signature in which the real signer can convert it into an ordinary signature. In this way, the real signer can prove the ownership of a ring signature if necessary. In this paper, we introduce a new convertible ring signature with an additional property. That is, before converting a ring signature into an ordinary signature, we allow the real signer to reveal the identity of non‐signers gradually. In other words, if there are n possible signers in a ring, then, by revealing one non‐signer, it will become a ring signature with n − 1 possible signers. By revealing n − 1 non‐signers, then, the ring signature comes to an ordinary signature, and anyone can verify who is the real signer. This property is useful when some non‐signers of a ring signature are not trusted by a verifier (i.e., the signature will not be accepted if someone is a possible signer). Rivest, Shamir, and Tauman first mentioned this problem and gave a solution as their modified ring signature scheme. However, their modified scheme can only guarantee computational anonymity. Our new scheme provides the same property on one hand and still guarantees unconditional anonymity on the other hand. The security is rigorously proved in the random oracle model according to the formal definition. Copyright © 2011 John Wiley & Sons, Ltd.

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Convertible ring signature

Cited by 37 publications

References 1 publication

A survey of ring signature

A survey of ring signature

Controllable Ring Signatures and Its Application to E-Prosecution

Convertible ring signatures with gradual revelation of non‐signers

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