Certifying Permutations: Noninteractive Zero-Knowledge Based on Any Trapdoor Permutation

M. Bellare and M. Yung

Volume 9, Number 3, 1996, Pages 149--166

Translucent Cryptography - An Alternative to Key Escrow, and Its Implementation via Fractional Oblivious Transfer

M. Bellare and R. L. Rivest

Volume 12, Number 2, 1999, Pages 117-140