On the Insecurity of an Identity Based Proxy Re-encryption Scheme

• Autorzy: Wang X.A. , Yang X.
• Języki publikacji: EN

Abstrakty

EN

At Pairing'07, Matsuo proposed two proxy re-encryption schemes: proxy re-encryption fromCBE to IBE and IBE to IBE. Now both schemes have been standardized by P1363.3workgroup. In this paper, we show that their identity based proxy re-encryption scheme is insecure. We give two attacks to this scheme. The first attack shows that the proxy can re-encrypt any IBE user's ciphertext to be the delegatee's ciphertext. The second attack implies that, if the proxy colludes with any delegatee, the proxy and this delegatee can derive any other IBE user’s secret key.

Słowa kluczowe

EN

cryptography; identity based proxy re-encryption; attack; insecurity

• Wydawca: IOS Press
• Czasopismo: Fundamenta Informaticae
• Rocznik: 2010
• Tom: Vol. 98, nr 2/3
• Strony: 277--281
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Wang X.A.

autor

Yang X.

• Key Laboratory of Information and Network Security, Engineering College of Chinese Armed Police Force, Xi’an, 710086, P. R. China,

Bibliografia

• [1] Ateniese, G., Fu, K., Green,M., Hohenberger, S.: Improved proxy re-encryption schemes with applications to secure distributed storage, NDSS, The Internet Society, 2005, ISBN 1-891562-20-7, 1-891562-19-3.
• [2] Ateniese, G., Fu, K., Green,M., Hohenberger, S.: Improved proxy re-encryption schemes with applications to secure distributed storage, ACM Trans. Inf. Syst. Secur., 9(1), 2006, 1 -30.
• [3] Blaze, M., Bleumer, G., Strauss, M.: Divertible protocols and atomic proxy cryptography, EUROCRYPT (K. Nyberg, Ed.), 1403, Springer, 1998, ISBN 3-540-64518-7.
• [4] Boneh, D., Boyen, X.: Efficient selective-id secure identity based encryption without random oracles, EUROCRYPT (C. Cachin, J. Camenisch, Eds.), 3027, Springer, 2004, ISBN 3-540-21935-8.
• [5] Boneh, D., Goh, E., Matsuo, T.: Proposal for P1363.3 proxy re-encryption, Sep 2006, Available online at http://grouper.ieee.org/groups/1363/IBC/submissions/.
• [6] Goh, E., Matsuo, T.: Proposal for P1363.3 proxy re-encryption, Aug 2006, Available online at http://grouper.ieee.org/groups/1363/IBC/submissions/.
• [7] Green, M., Ateniese, G.: Identity-based proxy re-encryption, ACNS (J. Katz, M. Yung, Eds.), 4521, Springer, 2007, ISBN 978-3-540-72737-8.
• [8] Martin, L.: P1363.3(TM)/D1,Draft standard for identity-based public cryptography using pairings, may 2008.
• [9] Matsuo, T.: Proxy re-encryption systems for identity-based encryption, Pairing (T. Takagi, T. Okamoto, E. Okamoto, T. Okamoto, Eds.), 4575, Springer, 2007, ISBN 978-3-540-73488-8