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Conference Papers Year : 2019

Forward Secure Identity-Based Signature Scheme with RSA

Hankyung Ko
  • Function : Author
  • PersonId : 1153462
Gweonho Jeong
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  • PersonId : 1153463
Jongho Kim
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  • PersonId : 1153464
Jihye Kim
  • Function : Author
  • PersonId : 1023791
Hyunok Oh
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  • PersonId : 1023792

Abstract

A forward secure identity based signature scheme (FSIBS) provides forward secrecy of secret keys. In order to mitigate the damage when keys are leaked, it is desirable to evolve all the secret keys, i.e., both the user keys and the master key. In this paper, we propose a new RSA-based FSIBS scheme which requires constant size keys and generates constant size signatures. The experimental results show that it takes 3 ms to generate a signature in the proposed scheme while it takes 75 ms in the existing pairing based approach. The proposed scheme is provably secure under the factoring assumption in the random oracle model.
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hal-03744294 , version 1 (02-08-2022)

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Hankyung Ko, Gweonho Jeong, Jongho Kim, Jihye Kim, Hyunok Oh. Forward Secure Identity-Based Signature Scheme with RSA. 34th IFIP International Conference on ICT Systems Security and Privacy Protection (SEC), Jun 2019, Lisbon, Portugal. pp.314-327, ⟨10.1007/978-3-030-22312-0_22⟩. ⟨hal-03744294⟩
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