Chapter

Advances in Cryptology — ASIACRYPT 2002

Volume 2501 of the series Lecture Notes in Computer Science pp 548-566

Date:

Hierarchical ID-Based Cryptography

  • Craig GentryAffiliated withDoCoMo USA Labs
  • , Alice SilverbergAffiliated withDepartment of Mathematics, Ohio State University

Abstract

We present hierarchical identity-based encryption schemes and signature schemes that have total collusion resistance on an arbitrary number of levels and that have chosen ciphertext security in the random oracle model assuming the difficulty of the Bilinear Diffie-Hellman problem.

Keywords

identity-based cryptography hierarchical identity-based cryptography elliptic curves pairing-based cryptography