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Authenticated Encryption in the Face of Protocol and Side Channel Leakage

機(jī)譯:面對(duì)協(xié)議和側(cè)通道泄漏的經(jīng)過身份驗(yàn)證的加密

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摘要

Authenticated encryption schemes in practice have to be robust against adversaries that have access to various types of leakage, for instance decryption leakage on invalid ciphertexts (protocol leakage), or leakage on the underlying primitives (side channel leakage). This work includes several novel contributions: we augment the notion of nonce-base authenticated encryption with the notion of continuous leakage and we prove composition results in the face of protocol and side channel leakage. Moreover, we show how to achieve authenticated encryption that is simultaneously both misuse resistant and leakage resilient, based on a sufficiently leakage resilient PRF, and finally we propose a concrete, pairing-based instantiation of the latter.
機(jī)譯:在實(shí)踐中,經(jīng)過身份驗(yàn)證的加密方案必須對(duì)訪問各種泄漏類型的對(duì)手具有魯棒性,例如,無效密文上的解密泄漏(協(xié)議泄漏)或底層基元上的泄漏(側(cè)信道泄漏)。這項(xiàng)工作包括幾個(gè)新穎的貢獻(xiàn):我們用連續(xù)泄漏的概念擴(kuò)展了基于隨機(jī)數(shù)的身份驗(yàn)證加密的概念,并且證明了面對(duì)協(xié)議和側(cè)通道泄漏的合成結(jié)果。此外,我們展示了如何基于具有充分防泄漏功能的PRF來實(shí)現(xiàn)同時(shí)具有防誤用和防泄漏功能的認(rèn)證加密,最后,我們提出了基于配對(duì)的具體實(shí)例化。

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