Cryptology ePrint Archive: Report 2016/1090
OleF: An Inverse-Free Online Cipher
Ritam Bhaumik and Mridul Nandi
Abstract: Online ciphers, in spite of being insecure against an sprp adversary, can be desirable at places because of their ease of implementation and speed. Here we propose a single-keyed inverse-free construction that achieves online sprp security with an optimal number of blockcipher calls. We also include a partial block construction, without requiring any extra key.
Category / Keywords: secret-key cryptography / OleF, online cipher, blockcipher, inverse-free, diblock
Original Publication (in the same form): IACR-FSE-2017
Date: received 20 Nov 2016, last revised 29 Nov 2016
Contact author: bhaumik ritam at gmail com
Available format(s): PDF | BibTeX Citation
Note: There were some late changes to the Camera-Ready version. This is the preprint of the final submitted version.
Version: 20161129:121752 (All versions of this report)
Short URL: ia.cr/2016/1090
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