New and Improved Constructions for Partially Equivocable Public Key Encryption

ePrint Report: New and Improved Constructions for Partially Equivocable Public Key Encryption

Benoît Libert, Alain Passelègue, Mahshid Riahinia

Non-committing encryption (NCE) is an advanced form of public-key encryption which guarantees the security of a Multi-Party Computation (MPC) protocol in the presence of an adaptive adversary. Brakerski et al. (TCC 2020) recently proposed an intermediate notion, termed Packed Encryption with Partial Equivocality (PEPE), which implies NCE and preserves the ciphertext rate (up to a constant factor). In this work, we propose …

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