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Title:
EHE: nonce misuse-resistant message authentication
Authors: Sergey Agievich
Abstract:We propose a nonce misuse-resistant message authentication scheme called EHE (Encrypt-Hash-Encrypt). In EHE, a message-dependent polynomial is evaluated at the point which is an encrypted nonce. The resulting polynomial hash value is encrypted again and becomes an authentication tag. We prove the prf-security of the EHE scheme and extend it to two authenticated encryption modes which follow the “encrypt-then-authenticate” paradigm.
ePrint: https://eprint.iacr.org/2017/231
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