An efficient identity-based online/offline encryption scheme

Joseph K Liu; Jianying Zhou

doi:10.1007/978-3-642-01957-9_10

An efficient identity-based online/offline encryption scheme

Joseph K Liu, Jianying Zhou

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

44 Citations (Scopus)

Abstract

In this paper, we present an efficient Identity-based Online / Offline Encryption (IBOOE) scheme. An IBOOE scheme allows one to split the encryption into two phases. In the offline phase, most heavy computations such as exponentiation or pairing, if any, are done in this phase. Yet it does not require the knowledge of the plaintext or the receiver s identity. This nice property allows it can be executed offline , or inside some powerful device. The next phase is called the online phase, where only light computations such as integer addition, multiplication or hashing are needed, together with the plaintext and the receiver s identity. This can be executed inside some embedded device such as smart card or wireless sensor where the computation power is very limited. We propose an efficient IBOOE scheme, with great improvement in the computation requirement of both the offline, online encryption phase and decryption phase, together with much shorten ciphertext over previous schemes. Our scheme can be proven secure in the random oracle model.

Original language	English
Title of host publication	Proceedings of the 7th International Conference on Applied Cryptography and Network Security (ACNS 2009)
Editors	Michel Abdalla, David Pointcheval, Pierre-Alain Fouque, Damien Vergnaud
Place of Publication	Heidelberg Germany
Publisher	Springer
Pages	156 - 167
Number of pages	12
Volume	5536
ISBN (Print)	9783642019562
DOIs	https://doi.org/10.1007/978-3-642-01957-9_10
Publication status	Published - 2009
Externally published	Yes
Event	International Conference on Applied Cryptography and Network Security 2009 - Paris-Rocquencourt, France Duration: 2 Jun 2009 → 5 Jun 2009 Conference number: 7th https://link.springer.com/book/10.1007/978-3-642-01957-9 (Proceedings)

Conference

Conference	International Conference on Applied Cryptography and Network Security 2009
Abbreviated title	ACNS 2009
Country/Territory	France
City	Paris-Rocquencourt
Period	2/06/09 → 5/06/09
Internet address	https://link.springer.com/book/10.1007/978-3-642-01957-9 (Proceedings)

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10.1007/978-3-642-01957-9_10

Cite this

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title = "An efficient identity-based online/offline encryption scheme",

abstract = "In this paper, we present an efficient Identity-based Online / Offline Encryption (IBOOE) scheme. An IBOOE scheme allows one to split the encryption into two phases. In the offline phase, most heavy computations such as exponentiation or pairing, if any, are done in this phase. Yet it does not require the knowledge of the plaintext or the receiver s identity. This nice property allows it can be executed offline , or inside some powerful device. The next phase is called the online phase, where only light computations such as integer addition, multiplication or hashing are needed, together with the plaintext and the receiver s identity. This can be executed inside some embedded device such as smart card or wireless sensor where the computation power is very limited. We propose an efficient IBOOE scheme, with great improvement in the computation requirement of both the offline, online encryption phase and decryption phase, together with much shorten ciphertext over previous schemes. Our scheme can be proven secure in the random oracle model.",

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booktitle = "Proceedings of the 7th International Conference on Applied Cryptography and Network Security (ACNS 2009)",

publisher = "Springer",

note = "International Conference on Applied Cryptography and Network Security 2009, ACNS 2009 ; Conference date: 02-06-2009 Through 05-06-2009",

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Liu, JK & Zhou, J 2009, An efficient identity-based online/offline encryption scheme. in M Abdalla, D Pointcheval, P-A Fouque & D Vergnaud (eds), Proceedings of the 7th International Conference on Applied Cryptography and Network Security (ACNS 2009). vol. 5536, Springer, Heidelberg Germany, pp. 156 - 167, International Conference on Applied Cryptography and Network Security 2009, Paris-Rocquencourt, France, 2/06/09. https://doi.org/10.1007/978-3-642-01957-9_10

An efficient identity-based online/offline encryption scheme. / Liu, Joseph K; Zhou, Jianying.

Proceedings of the 7th International Conference on Applied Cryptography and Network Security (ACNS 2009). ed. / Michel Abdalla; David Pointcheval; Pierre-Alain Fouque; Damien Vergnaud. Vol. 5536 Heidelberg Germany : Springer, 2009. p. 156 - 167.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

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AB - In this paper, we present an efficient Identity-based Online / Offline Encryption (IBOOE) scheme. An IBOOE scheme allows one to split the encryption into two phases. In the offline phase, most heavy computations such as exponentiation or pairing, if any, are done in this phase. Yet it does not require the knowledge of the plaintext or the receiver s identity. This nice property allows it can be executed offline , or inside some powerful device. The next phase is called the online phase, where only light computations such as integer addition, multiplication or hashing are needed, together with the plaintext and the receiver s identity. This can be executed inside some embedded device such as smart card or wireless sensor where the computation power is very limited. We propose an efficient IBOOE scheme, with great improvement in the computation requirement of both the offline, online encryption phase and decryption phase, together with much shorten ciphertext over previous schemes. Our scheme can be proven secure in the random oracle model.

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An efficient identity-based online/offline encryption scheme

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