Nonces Are Noticed: AEAD Revisited

Ruth Ng
Ruth Ng
Björn Tackmann
Björn Tackmann

ADVANCES IN CRYPTOLOGY - CRYPTO 2019, PT 1, pp. 235-265, 2019.

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Abstract:

We draw attention to a gap between theory and usage of nonce-based symmetric encryption, under which the way the former treats nonces can result in violation of privacy in the latter. We bridge the gap with a new treatment of nonce-based symmetric encryption that modifies the syntax (decryption no longer takes a nonce), upgrades the secur...More

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