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McOE

swMATH ID: 20876
Software Authors: Fleischmann, E.; Forler, C.; Lucks, S.
Description: McOE: A Family of Almost Foolproof On-Line Authenticated Encryption Schemes. On-Line Authenticated Encryption (OAE) combines privacy with data integrity and is on-line computable. Most block cipher-based schemes for Authenticated Encryption can be run on-line and are provably secure against nonce-respecting adversaries. But they fail badly for more general adversaries. This is not a theoretical observation only – in practice, the reuse of nonces is a frequent issue. In recent years, cryptographers developed misuse-resistant schemes for Authenticated Encryption. These guarantee excellent security even against general adversaries which are allowed to reuse nonces. Their disadvantage is that encryption can be performed in an off-line way, only. This paper considers OAE schemes dealing both with nonce-respecting and with general adversaries. It introduces McOE, an efficient design for OAE schemes. For this we present in detail one of the family members, McOEx, which is a design solely based on a standard block cipher. As all the other member of the McOE family, it provably guarantees reasonable security against general adversaries as well as standard security against nonce-respecting adversaries.
Homepage: https://rd.springer.com/chapter/10.1007/978-3-642-34047-5_12
Related Software: ELmD; SKINNY; MCBC; COBRA; Skein Hash; PHOTON; spongent; MMH; ATHENa; SIMON; tweakey; PRESENT; ELmE; POEx; Quark; Remus; Romulus; FIDES; Camellia; Minalpher
Cited in: 20 Documents

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