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Paper 2019/041

Message Authentication (MAC) Algorithm For The VMPC-R (RC4-like) Stream Cipher

Bartosz Zoltak

Abstract

We propose an authenticated encryption scheme for the VMPC-R stream cipher. VMPC-R is an RC4-like algorithm proposed in 2013. It was created in a challenge to find a bias-free cipher within the RC4 design scope and to the best of our knowledge no security weakness in it has been published to date. The contribution of this paper is an algorithm to compute Message Authentication Codes (MACs) along with VMPC-R encryption. We also propose a simple method of transforming the MAC computation algorithm into a hash function.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Preprint.
Keywords
stream cipherRC4VMPC-Rdistinguishing attackbiasMessage Authentication Code (MAC)hash function
Contact author(s)
bzoltak @ vmpcfunction com
History
2019-01-18: revised
2019-01-17: received
See all versions
Short URL
https://ia.cr/2019/041
License
Creative Commons Attribution
CC BY
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