Implementation of a Strongly Robust Identity-Based Encryption Scheme over Type-3 Pairings

Okano, Hiroshi; Emura, Keita; Ishibashi, Takuya; Ohigashi, Toshihiro; Suzuki, Tatsuya

doi:10.1109/candar.2019.00032

Cited by 3 publications

(6 citation statements)

References 30 publications

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“…A Barreto-Naehrig curve, BN462, was used for all three schemes. This curve provides 128-bit security [38]. Both the Zhang et al scheme and Lim et al scheme state isomorphism between groups as a requirement, so as written they are not compatible with BN462, which is a Type 3 curve [38].…”

Section: ) Efficiencymentioning

confidence: 99%

“…This curve provides 128-bit security [38]. Both the Zhang et al scheme and Lim et al scheme state isomorphism between groups as a requirement, so as written they are not compatible with BN462, which is a Type 3 curve [38]. However, the isomorphism requirement was originally included by Boneh et al in order to satisfy their definition of the Strong Diffie-Hellmann (SDH) assumption given in [20].…”

Section: ) Efficiencymentioning

confidence: 99%

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Efficient Short Group Signatures for Conditional Privacy in Vehicular Ad Hoc Networks via ID Caching and Timed Revocation

Funderburg

Lee

2021

IEEE Access

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Vehicular Ad hoc Networks (VANETs) are a subset of the Internet of Things (IoT) that are used in smart traffic applications. Due to their high speed, mobility, and exposure to the environment, the security requirements for VANETs result in the conflicting design goals of protecting member privacy while also ensuring non-repudiation. Group signature schemes can fulfill these requirements, but often at the cost of expensive bilinear pairing operations. Furthermore, the cost of updating the group key information can be costly. Accordingly, this paper has two goals. First, it presents a group signature scheme that has been modified to remove pairing operations by caching computed values, while still preserving the critical requirement of conditional privacy. Second, this paper presents an argument for the abandonment of perfect forward and backward secrecy in VANET schemes in order to prevent the generation of keys that are never used, or used only once, and reduce the twin burdens of excessive key recalculation and key redistribution on the system.

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Section: ) Efficiencymentioning

confidence: 99%

Section: ) Efficiencymentioning

confidence: 99%

Efficient Short Group Signatures for Conditional Privacy in Vehicular Ad Hoc Networks via ID Caching and Timed Revocation

Funderburg

Lee

2021

IEEE Access

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“…An extended abstract appears in the Seventh International Symposium on Computing and Networking (CANDAR 2019) [45]. After publishing the conference version, the mcl library v1.00 (released on September 30, 2019) supports functions for computing multi-scalar multiplications (mclBnG1 mulVec, mclBnG2 mulVec, and mclBnGT powVec) that were not employed in our implementation.…”

Section: Differences From Proceedings Versionmentioning

confidence: 99%

“…In this version, we employed these functions and re-implement IBE schemes (Section 5). In addition to this, we found that our encodings given in [45] do not work well (See Appendix), and thus we employ the KEM/DEM framework where KEM stands for key encapsulation mechanism and DEM stands for data encapsulation mechanism. For the DEM part, we employ AES-GCM and gave new implementation results due to this modification.…”

Section: Differences From Proceedings Versionmentioning

confidence: 99%

Implementation of a Strongly Robust Identity-Based Encryption Scheme over Type-3 Pairings

Okano

Emura

Ishibashi

et al. 2020

IJNC

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Identity-based encryption (IBE) is a powerful mechanism for maintaining security. However, systems based on IBE are unpopular when compared with those of the public-key encryption (PKE). In our opinion, one of the reasons is a gap between theory and practice. For example, a generic transformation of weakly/strongly robust IBE from any IBE has been proposed by Abdalla et al., no robust IBE scheme is explicitly given. This means that, theoretically, anyone can construct a weakly/strongly robust IBE scheme by employing this transformation. However, this seems not easily applicable to noncryptographers. In this paper, we first introduce the Gentry IBE scheme constructed over Type-3 pairings by employing the transformation proposed by Abe et al., and second we explicitly give strongly/weakly robust Gentry IBE schemes by employing the Abdalla et al. transformation. Finally, we show its implementation result and show that we can add strong robustness to the Gentry IBE scheme with a very few additional costs. We employ the mcl library to support a Barreto-Naehrig curve defined over the 462-bit prime. The encryption requires about 5 ms, whereas the decryption requires about 9 ms.

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“…FIGURE 3. Performance Comparisonschemes with pairings require Type 2 curves as specified in order to meet the Strong Diffie-Hellman (SDH) assumption[40], Boneh and Boyen reformulated their definition of SDH to allow the use of Type 3 curves[41], which are generally more efficient[42]. Using a Type 3 curve in this analysis gives a fairer comparison to pairings-free schemes.…”

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confidence: 99%

Pairing-Free Signatures With Insider-Attack Resistance for Vehicular Ad-Hoc Networks (VANETs)

2021

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Vehicular Ad-hoc Networks (VANETs) are a type of Internet of Things system where groups of vehicles communicate with each other and traffic monitoring infrastructure in order to provide safety and quality of life improvements for drivers and others in the area. Vehicles in a VANET are responsible for reporting their own status, as well as the statuses of the roadway, traffic, and environment in their immediate vicinity, to the system controller and other drivers for processing. VANET systems are open to the public, with vehicles joining and leaving at a high rate. This feature results in two high-priority requirements for VANET security: vehicles in a VANET must be held responsible for the correctness of the information that they report, and schemes ensuring message security must be quick. This paper presents an efficient, pairingfree signature scheme for VANETs that prevents the forgery of signer identities, including in the case of insider attacks, without the use of a tamper-proof device.

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Implementation of a Strongly Robust Identity-Based Encryption Scheme over Type-3 Pairings

Cited by 3 publications

References 30 publications

Efficient Short Group Signatures for Conditional Privacy in Vehicular Ad Hoc Networks via ID Caching and Timed Revocation

Efficient Short Group Signatures for Conditional Privacy in Vehicular Ad Hoc Networks via ID Caching and Timed Revocation

Implementation of a Strongly Robust Identity-Based Encryption Scheme over Type-3 Pairings

Pairing-Free Signatures With Insider-Attack Resistance for Vehicular Ad-Hoc Networks (VANETs)

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