Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (1): 64-68.doi: 10.1016/S1005-8885(08)60180-6

• Wireless • Previous Articles     Next Articles

Identity-based encryption with wildcards in the standard model

MING Yang,SHEN Xiao-qin, WANG Yu-min   

  1. School of Information Engineering, Chang’an University, Xi’an 710064, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-26
  • Contact: MING Yang


In this article, based on Chatterjee-Sarkar’ hierarchical identity-based encryption (HIBE), a novel identity-based encryption with wildcards (WIBE) scheme is proposed and is proven secure in the standard model (without random oracle). The proposed scheme is proven to be secure assuming that the decisional Bilinear Diffie-Hellman (DBDH) problem is hard. Compared with the Wa-WIBE scheme that is secure in the standard model, our scheme has shorter common parameters and ciphertext length.

Key words:

encryption;identity-based encryption with wildcards;bilinear pairing