Exploring Cipherspace: Combining stream ciphers and block ciphers

Sandy Harris

Paper 2008/473

Exploring Cipherspace: Combining stream ciphers and block ciphers

Sandy Harris

Abstract

This paper looks at the possibility of combining a block cipher and a stream cipher to get a strong hybrid cipher. It includes two specific proposals for combining AES-128 and RC4-128 to get a cipher that takes a 256-bit key and is significantly faster than AES-256, and arguably more secure. One is immune to algebraic attacks.

Note: minor corrections, typos, reference format, added missing reference

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: block ciphers stream ciphers AES hybrid ciphers RC4
Contact author(s): sandyinchina @ gmail com
History: 2008-11-18: received
Short URL: https://ia.cr/2008/473
License: CC BY

BibTeX

@misc{cryptoeprint:2008/473,
      author = {Sandy Harris},
      title = {Exploring Cipherspace: Combining stream ciphers and block ciphers},
      howpublished = {Cryptology ePrint Archive, Paper 2008/473},
      year = {2008},
      note = {\url{https://eprint.iacr.org/2008/473}},
      url = {https://eprint.iacr.org/2008/473}
}