[Resource Topic] 2014/696: Security Proofs for the BLT Signature Scheme

Welcome to the resource topic for 2014/696

Title:
Security Proofs for the BLT Signature Scheme

Authors: Ahto Buldas, Risto Laanoja, Ahto Truu

Abstract:

We present security proofs for the BLT signature scheme in the model, where hash functions are built from ideal components (random oracles, ideal ciphers, etc.). We show that certain strengthening of the Pre-image Awareness (PrA) conditions like boundedness of the extractor, and certain natural properties (balancedness and the so-called output one-wayness) of the hash function are sufficient for existential unforgeability of the BLT signature scheme.

ePrint: https://eprint.iacr.org/2014/696

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