Cryptology ePrint Archive: Report 2001/090

Identity Based Encryption From the Weil Pairing

Dan Boneh and Matthew Franklin

Abstract: We propose a fully functional identity-based encryption scheme (IBE). The scheme has chosen ciphertext security in the random oracle model assuming an elliptic curve variant of the computational Diffie-Hellman problem. Our system is based on bilinear maps between groups. The Weil pairing on elliptic curves is an example of such a map. We give precise definitions for secure identity based encryption schemes and give several applications for such systems.

Category / Keywords: public-key cryptography /

Date: received 29 Oct 2001

Contact author: dabo at cs stanford edu

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Note: This is the full version of a paper that appeared in Crypto '2001.

Version: 20011030:124849 (All versions of this report)

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