Abstract
Time Capsule Signature, first formalized by Dodis and Yum in Financial Cryptography 2005, is a digital signature scheme which allows a signature to bear a (future) time t so that the signature will only be valid at time t or later, when a trusted third party called time server releases time-dependent information for checking the validity of a time capsule signature. Also, the actual signer of a time capsule signature has the privilege to make the signature valid before time t.
In this paper, we provide a new security model of time capsule signature such that time server is not required to be fully trusted. Moreover, we provide two efficient constructions in random oracle model and standard model. Our improved security model and proven secure constructions have the potential to build some new E-Commerce applications.
The second author was supported by a grant from City University of Hong Kong (Project No. 7002001 ).
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References
Asokan, N., Shoup, V., Waidner, M.: Optimistic fair exchange of digital signatures. IEEE Journal on Selected Areas in Communications 18(4), 593–610 (2000)
Bellare, M., Goldwasser, S.: Encapsulated key escrow. Technical Report 688, MIT/LCS/TR (1996)
Bellare, M., Goldwasser, S.: Verifiable partial key escrow. In: ACM Conference on Computer and Communications Security, pp. 78–91. ACM Press, New York (1997)
Bellare, M., Rogaway, P.: Random oracles are practical: A paradigm for designing efficient protocols. In: ACM Conference on Computer and Communications Security, pp. 62–73. ACM Press, New York (1993)
Blake, I.F., Chan, A.C.-F.: Scalable, server-passive, user-anonymous timed release public key encryption from bilinear pairing. In: ICDCS (2005)
Boneh, D., Boyen, X.: Efficient selective-id secure identity based encryption without random oracles. In: Cachin, C., Camenisch, J.L. (eds.) EUROCRYPT 2004. LNCS, vol. 3027, Springer, Heidelberg (2004)
Boneh, D., Franklin, M.: Identity-based encryption from the Weil pairing. In: Kilian, J. (ed.) CRYPTO 2001. LNCS, vol. 2139, pp. 213–229. Springer, Heidelberg (2001)
Boneh, D., Gentry, C., Shacham, H., Lynn, B.: Aggregate and verifiably encrypted signatures from bilinear maps. In: Biham, E. (ed.) EUROCRPYT 2003. LNCS, vol. 2656, pp. 416–432. Springer, Heidelberg (2003)
Boneh, D., Naor, M.: Timed commitments. In: Bellare, M. (ed.) CRYPTO 2000. LNCS, vol. 1880, p. 236. Springer, Heidelberg (2000)
Chen, L., Harrison, K., Smart, N., Soldera, D.: Applications of multiple trust authorities in pairing based cryptosystems. In: Davida, G.I., Frankel, Y., Rees, O. (eds.) InfraSec 2002. LNCS, vol. 2437, pp. 260–275. Springer, Heidelberg (2002)
Cheon, J.H., Hopper, N., Kim, Y., Osipkov, I.: Timed-release and key-insulated public key encryption. Cryptology ePrint Archive, Report 2004/231 (2004)
Dodis, Y., Reyzin, L.: Breaking and repairing optimistic fair exchange from PODC 2003. In: ACM Workshop on Digital Rights Management (DRM), October 2003, ACM Press, New York (2003)
Dodis, Y., Yum, D.: Time capsule signature. In: Patrick, A.S., Yung, M. (eds.) FC 2005. LNCS, vol. 3570, pp. 57–71. Springer, Heidelberg (2005)
Garay, J.A., Jakobsson, M.: Timed release of standard digital signatures. In: Blaze, M. (ed.) FC 2002. LNCS, vol. 2357, pp. 168–182. Springer, Heidelberg (2003)
Garay, J.A., Pomerance, C.: Timed fair exchange of standard signatures. In: Wright, R.N. (ed.) FC 2003. LNCS, vol. 2742, pp. 190–207. Springer, Heidelberg (2003)
Goldwasser, S., Micali, S., Rivest, R.: A digital signature scheme secure against adaptive chosen-message attack. SIAM J. Computing 17(2), 281–308 (1988)
Hu, B.C., Wong, D.S., Huang, Q., Yang, G., Deng, X.: Time capsule signature: Efficient and provably secure constructions. Cryptology ePrint Archive (2007), http://eprint.iacr.org
May, T.C.: Timed-release crypto (1993), http://www.cyphernet.org/cyphernomicon/chapter14/14.5.html
Mont, M.C., Harrison, K., Sadler, M.: The HP time vault service: Exploiting IBE for timed release of confidential information. In: WWW (2003)
Rivest, R.L., Shamir, A., Tauman, Y.: How to leak a secret. In: Boyd, C. (ed.) ASIACRYPT 2001. LNCS, vol. 2248, pp. 552–565. Springer, Heidelberg (2001)
Rivest, R.L., Shamir, A., Wagner, D.A.: Time-lock puzzles and timed-release crypto. Technical Report 684, MIT/LCS/TR (1996)
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)
Waters, B.: Efficient identity-based encryption without random oracles. In: Cramer, R.J.F. (ed.) EUROCRYPT 2005. LNCS, vol. 3494, pp. 114–127. Springer, Heidelberg (2005)
Zhang, M., Chen, G., Li, J., Wang, L., Qian, H.: A new construction of time capsule signature. Cryptology ePrint Archive, Report, 2006/113 (2006), http://eprint.iacr.org
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Hu, B.C., Wong, D.S., Huang, Q., Yang, G., Deng, X. (2007). Time Capsule Signature: Efficient and Provably Secure Constructions. In: Lopez, J., Samarati, P., Ferrer, J.L. (eds) Public Key Infrastructure. EuroPKI 2007. Lecture Notes in Computer Science, vol 4582. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73408-6_9
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DOI: https://doi.org/10.1007/978-3-540-73408-6_9
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