This paper introduces POE, a family of on-line ciphers that combines provable security against chosen-ciphertext attacks with pipelineability to support efficient implementations. POE combines a block cipher and an e-AXU family of hash functions. Different instantiations of POE are given, based on different universal hash functions and suitable for different platforms. Moreover, this paper introduces POET, a provably secure on-line AE scheme, which inherits pipelineability and chosen-ciphertext-security from POE and provides additional resistance against nonce-misuse attacks.
Category / Keywords: secret-key cryptography / on-line cipher, chosen-ciphertext security, authenticated encryption Original Publication (with minor differences): IACR-FSE-2014 Date: received 28 Apr 2014, last revised 30 Apr 2014 Contact author: eik list at uni-weimar de Available format(s): PDF | BibTeX Citation Version: 20140430:121418 (All versions of this report) Short URL: ia.cr/2014/297