A Secure Signature Scheme From Bilinear Maps

The authors present a new class of signature schemes based on properties of certain bilinear algebraic maps. These signatures are secure against existential forgery under a chosen message attack in the standard model (without using the random oracle model). Security is based on the computational Diffie-Hellman problem. The concrete schemes that they get are the most efficient provable discrete-log type signature schemes to date. Provably secure signature schemes can be constructed from the most basic cryptographic primitive, one-way functions [NY89,Rom90]. As is often the case with cryptographic schemes designed from elementary blocks, this signature scheme is somewhat impractical. Over the years several signature schemes were proposed based on stronger complexity assumptions.

Provided by: Stanford University Topic: Security Date Added: Jan 2011 Format: PDF

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