Identity-Based signcryption from identity-based cryptography
Pages 70 - 83
Abstract
A signcryption scheme encrypts and signs data in a single operation which is more efficient than using an encryption scheme combined with a signature scheme. Identity-based cryptography (IBC) does not require users to pre-compute key pairs and obtain certificates for their public keys. Identity-based signcryption (IBSC) applies the idea of IBC to signcryption. IBSC involves five security notions: message confidentiality, signature non-repudiation, ciphertext anonymity, ciphertext unlinkability, and ciphertext authentication. Recently, the Pandey scheme has been proposed; the scheme uses an identity-based encryption scheme and an identity-based signature scheme. However, this scheme only achieves message confidentiality and signature non-repudiation. In this work, we improve the scheme to achieve additional security notions, ciphertext anonymity and ciphertext authentication, with no loss in efficiency.
References
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- KCC: Korea Communications Commission
- MOPAS: Ministry of Public Administration and Security
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Springer-Verlag
Berlin, Heidelberg
Publication History
Published: 22 August 2011
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