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The Department of Computer Science at Dartmouth College
announces a new technical report:
Authenticated Streamwise On-line Encryption
Dartmouth Technical Report TR2009-640
Patrick P. Tsang
Rouslan V. Solomakhin
Sean W. Smith
Date: March 2009
Abstract:
In Blockwise On-line Encryption, encryption and decryption
return an output block as soon as the next input block is received.
In this paper, we introduce Authenticated Streamwise On-line
Encryption (ASOE), which operates on plaintexts and ciphertexts as
streams of arbitrary length (as opposed to fixed-sized blocks),
and thus significantly reduces message expansion and end-to-end
latency. Also, ASOE provides data authenticity as an option.
ASOE can therefore be used to efficiently secure
resource-constrained communications with real-time requirements such
as those in the electric power grid and wireless sensor networks.
We investigate and formalize ASOE's strongest achievable notion of
security, and present a construction that is secure under that notion.
An instantiation of our construction incurs zero end-to-end
latency due to buffering and only 48 bytes of message expansion,
regardless of the plaintext-size.
To obtain an electronic copy, point your web browser to the URL
<http://www.cs.dartmouth.edu/reports/abstracts/TR2009-640/>.
To order a paper copy, write to reports@cs.dartmouth.edu.
Ask for technical report TR2009-640, and be sure to include your own
mailing address.