Abstract
In this paper, we propose a new Certificate-Based Encryption (CBE) scheme which is fully secure in the standard model. We achieve chosen ciphertext (CCA) security directly without any transformation. When compared to all previous generic constructions (in either random oracle or standard model), our scheme is far more efficient than those schemes. When compared to the CBE scheme in [16] (which is the only concrete implementation secure in the standard model), we enjoy a great improvement in terms of space efficiency. Their scheme requires more than 160 group elements for the public parameters in order to gain an acceptable security. Our scheme just requires 5 group elements. In addition, the message space of our scheme is almost double as the one in [16]. A larger message space implies that it requires a smaller number of encryption operations of the same plaintext, resulting in a smaller overall ciphertext and overhead as well.
This work is partially funded by the EU project SMEPP-033563.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Al-Riyami, S.S., Paterson, K.: Certificateless public key cryptography. In: Laih, C.-S. (ed.) ASIACRYPT 2003. LNCS, vol. 2894, pp. 452–473. Springer, Heidelberg (2003)
Al-Riyami, S.S., Paterson, K.G.: CBE from CL-PKE: A generic construction and efficient schemes. In: Vaudenay, S. (ed.) PKC 2005. LNCS, vol. 3386, pp. 398–415. Springer, Heidelberg (2005)
Au, M., Chen, J., Liu, J., Mu, Y., Wong, D., Yang, G.: Malicious KGC attacks in certificateless cryptography. In: ASIACCS 2007, pp. 302–311. ACM Press, New York (2007)
Au, M., Liu, J., Susilo, W., Yuen, T.: Certificate based (linkable) ring signature. In: Dawson, E., Wong, D.S. (eds.) ISPEC 2007. LNCS, vol. 4464, pp. 79–92. Springer, Heidelberg (2007)
Boneh, D., Franklin, M.K.: Identity-Based Encryption from the Weil Pairing. In: Kilian, J. (ed.) CRYPTO 2001. LNCS, vol. 2139, pp. 213–229. Springer, Heidelberg (2001)
Boneh, D., Katz, J.: Improved efficiency for cca-secure cryptosystems built using identity-based encryption. In: Menezes, A. (ed.) CT-RSA 2005. LNCS, vol. 3376, pp. 87–103. Springer, Heidelberg (2005)
Dodis, Y., Katz, J.: Chosen-ciphertext security of multiple encryption. In: Kilian, J. (ed.) TCC 2005. LNCS, vol. 3378, pp. 188–209. Springer, Heidelberg (2005)
Fujisaki, E., Okamoto, T.: Secure integration of asymmetric and symmetric encryption schemes. In: Wiener, M. (ed.) CRYPTO 1999. LNCS, vol. 1666, pp. 537–554. Springer, Heidelberg (1999)
Galindo, D., Morillo, P., Rà fols, C.: Breaking Yum and Lee generic constructions of certificate-less and certificate-based encryption schemes. In: Atzeni, A.S., Lioy, A. (eds.) EuroPKI 2006. LNCS, vol. 4043, pp. 81–91. Springer, Heidelberg (2006)
Gentry, C.: Certificate-based encryption and the certificate revocation problem. In: EUROCRYPT 2003. LNCS, vol. 2656, pp. 272–293. Springer, Heidelberg (2003)
Gentry, C.: Practical identity-based encryption without random oracles. In: Vaudenay, S. (ed.) EUROCRYPT 2006. LNCS, vol. 4004, pp. 445–464. Springer, Heidelberg (2006)
Kang, B.G., Park, J.H., Hahn, S.G.: A certificate-based signature scheme. In: Okamoto, T. (ed.) CT-RSA 2004. LNCS, vol. 2964, pp. 99–111. Springer, Heidelberg (2004)
Li, J., Huang, X., Mu, Y., Susilo, W., Wu, Q.: Certificate-based signature: Security model and efficient construction. In: López, J., Samarati, P., Ferrer, J.L. (eds.) EuroPKI 2007. LNCS, vol. 4582, pp. 110–125. Springer, Heidelberg (2007)
Liu, J., Au, M., Susilo, W.: Self-generated-certificate public key cryptography and certificateless signature/encryption scheme in the standard model. In: ASIACCS 2007, pp. 273–283. ACM Press, New York (2007)
Liu, J., Baek, J., Susilo, W., Zhou, J.: Certificate based signature schemes without pairings or random oracles. In: ISC 2008. LNCS, vol. 5222. Springer, Heidelberg (to appear, 2008)
Morillo, P., RÃ fols, C.: Certificate-based encryption without random oracles (2006), http://eprint.iacr.org/2006/012/
Shamir, A.: Identity-Based Cryptosystems and Signature Schemes. In: Blakely, G.R., Chaum, D. (eds.) CRYPTO 1984. LNCS, vol. 196, pp. 47–53. Springer, Heidelberg (1985)
Yum, D.H., Lee, P.J.: Identity-based cryptography in public key management. In: Katsikas, S.K., Gritzalis, S., López, J. (eds.) EuroPKI 2004. LNCS, vol. 3093, pp. 71–84. Springer, Heidelberg (2004)
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 2008 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Liu, J.K., Zhou, J. (2008). Efficient Certificate-Based Encryption in the Standard Model. In: Ostrovsky, R., De Prisco, R., Visconti, I. (eds) Security and Cryptography for Networks. SCN 2008. Lecture Notes in Computer Science, vol 5229. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85855-3_10
Download citation
DOI: https://doi.org/10.1007/978-3-540-85855-3_10
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85854-6
Online ISBN: 978-3-540-85855-3
eBook Packages: Computer ScienceComputer Science (R0)