A Note on Adversarial Online Complexity in Security Proofs of Duplex-Based Authenticated Encryption Modes

ePrint Report: A Note on Adversarial Online Complexity in Security Proofs of Duplex-Based Authenticated Encryption Modes

Charlotte Lefevre

This note examines a nuance in the methods employed for counting the adversarial online complexity in the security proofs of duplex-based modes, with a focus on authenticated encryption. A recent study by Gilbert et al., reveals an attack on a broad class of duplex-based authenticated encryption modes. In particular, their approach to quantifying the adversarial online complexity, which capture realistic attack scenarios, …

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