A Survey on Group Signatures and Ring Signatures: Traceability vs. Anonymity

Perera, Maharage Nisansala Sevwandi; Nakamura, Tôru; Hashimoto, Masayuki; Yokoyama, Haruki; Cheng, Chen-Mou; Sakurai, Kouichi

doi:10.3390/cryptography6010003

Cited by 16 publications

(7 citation statements)

References 109 publications

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“…As researchers continue to improve the ring signature technology, some researchers propose accountable ring signatures [30] and traceable ring signatures [31]. However, considering the limitations of smart contract on-chain computation, we need to balance the security and efficiency of the scheme.…”

Section: Discussionmentioning

confidence: 99%

Cross-Chain Asset Transaction Method Based on Ring Signature for Identity Privacy Protection

Zhang,

Zhou,

Wang

et al. 2023

Electronics

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In recent years, the rapid development of blockchain technology has facilitated the transfer of value and asset exchange between different blockchains. However, achieving interoperability among various blockchains necessitates the exploration of cross-chain technology. While cross-chain technology enables asset flow between different blockchains, it also introduces the risk of identity privacy leakage, thus posing a significant threat to user security. To tackle this issue, this article proposes a cross-chain privacy protection scheme that leverages ring signature and relay chain technology. Specifically, this scheme utilizes RCROSS contracts based on ring signatures to handle cross-chain transactions, thereby ensuring the privacy of both parties involved in the transaction. This cross-chain solution demonstrates practicality and efficiency in facilitating cross-chain asset trading. Furthermore, it effectively combats reuse attacks and man-in-the-middle attacks at the application layer while also providing resistance against denial-of-service attacks at the network layer. To validate the proposed cross-chain solution, we conducted tests by constructing a specific cross-chain scenario and by focusing on the natural gas consumption values generated by the RCROSS contract function used in the application chain. The findings indicate that our proposed solution is highly practical in safeguarding the identity privacy of transaction participants. This article’s framework guarantees reliability, security, and efficiency in cross-chain asset transactions. By incorporating ring-based signatures and relay chain technology, users can confidently protect their identity privacy, thus ensuring secure and smooth cross-chain transactions.

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Section: Discussionmentioning

confidence: 99%

Cross-Chain Asset Transaction Method Based on Ring Signature for Identity Privacy Protection

Zhang,

Zhou,

Wang

et al. 2023

Electronics

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“…and its official debut in 2001 [10], several other schemes have been presented [14]- [17]. Big data has a huge advantage particularly in the context of huge data analytics, the ID-based implementation of ring signature has a number of advantages over the traditional public key implementation.…”

Section: Id-based Cryptosystemmentioning

confidence: 99%

Cost-effective anonymous data sharing with forward security using improved authentication

Handore¹,

Kolapkar²,

Chavan³

et al. 2023

IJEECS

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Cloud computing gives customers instant access to a network of remote servers, networks, and data centres. Cloud computing makes data analysis helpful to society and individuals. Sharing data with many people causes efficiency, integrity, and privacy issues. Ring signatures may enable secure and anonymous data transfer. It anonymizes data verification for cloud-based analytics. Identity-based (ID) ring signatures are becoming popular alternatives to public key infrastructure (PKI)-based public-key encryption. PKI bottlenecks are certificate verification time and cost. ID-based ring signatures speed up certificate verification. We observed that encrypting ID-based ring signatures with a variation of SHA-384 and adding forward security considerably improves their security. Padding divides the input text into 512-byte blocks and adds the length as a 48-bit value to the hash in newer SHA versions. Signatures made before a user's secret key was compromised are legitimate. If a user's secret key is compromised, it's impossible to compel all data owners to re-verify their data, hence a large-scale data sharing system must contain this feature. We implement, secure, and prove our method's use. SHA-384 is safer for cloud-based anonymous data sharing.

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“…The group manager manages new user joining and user revocations. However, the tracing feature of GS has opened research discussion due to the centralized and uncontrolled behavior of tracers 3 …”

Section: Introductionmentioning

confidence: 99%

“…However, the tracing feature of GS has opened research discussion due to the centralized and uncontrolled behavior of tracers. 3 Centralized tracing power puts all the user anonymity in danger because if the centralized tracer is attacked, then the adversary can cancel all the signatures' anonymity and identify the signers. Answering the centralized tracing problem in GS, Manulis et al 4 presented linkable democratic group signatures with the setting of no centralized authority.…”

mentioning

confidence: 99%

Secured tracing for group signatures from attribute‐based encryption

Perera,

Matsunaka,

Yokoyama

et al. 2023

Concurrency and Computation

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SummaryThis article presents a tracing mechanism for group signatures answering the security threats of malicious authorities and users' forgeries. The proposal weakens the high trust placed on the centralized tracing party in previous group signatures by decentralizing tracing power using a multiple tracer setting and limiting the tracers' access using attribute‐based encryption and the requirement of the group manager's agreement. We allow the group manager to control tracers identifying his group users. Instead of a centralized tracer, our setting has multiple tracers possessing attribute sets. Thus, after getting the group manager's permission, a tracer should satisfy the access policy in a given signature to identify the signer. On the other hand, our group signature scheme decentralizes the tracing key generation and removes the group manager's tracing ability. Thus, it ensures that only the attribute‐satisfying and permitted tracers can identify the signer. Moreover, this article delivers security against malicious users. It presents a verification process of access policy of the signatures to prevent users from utilizing invalid attributes for signing. In addition, the article delivers a collaborative tracing mechanism to satisfy attribute sets that a tracer fails to fulfill alone for identifying a signer. Thus, our tracing mechanism ensures security against malicious authorities and group users in group signatures. The article gives the general construction of the scheme and discusses the security.

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A Survey on Group Signatures and Ring Signatures: Traceability vs. Anonymity

Cited by 16 publications

References 109 publications

Cross-Chain Asset Transaction Method Based on Ring Signature for Identity Privacy Protection

Cross-Chain Asset Transaction Method Based on Ring Signature for Identity Privacy Protection

Cost-effective anonymous data sharing with forward security using improved authentication

Secured tracing for group signatures from attribute‐based encryption

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