Cryptology ePrint Archive: Report 2006/120

Key Privacy for Identity Based Encryption

Jason E. Holt

Abstract: We define key privacy for IBE systems in terms of two properties, indistinguishability under chosen identity attack, and indistinguishability under chosen key generator attack. Further, we show that the BasicIdent system in the Boneh/Franklin IBE has these properties under chosen plaintext attack.

Category / Keywords: public-key cryptography /

Publication Info: pre-print

Date: received 26 Mar 2006

Contact author: isrl at lunkwill org

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Version: 20060327:063927 (All versions of this report)

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