Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Multicast Delayed Authentication For Streaming Synchrophasor Data in the Smart Grid



Sergio Camara, Dhananjay Anand, Victoria Yan Pillitteri, Luiz F. Carmo


Multicast authentication of synchrophasor data is challenging due to the design requirements of Smart Grid monitoring systems such as low security overhead, tolerance of lossy networks, time-criticality and high data rates. In this work, we propose inf-TESLA, Infinite Timed Efficient Stream Loss-tolerant Authentication, a multicast delayed authentication protocol for communication links used to stream synchrophasor data for wide area control of electric power networks. Our approach is based on the authentication protocol TESLA but is augmented to accommodate high frequency transmissions of unbounded length. inf-TESLA protocol utilizes the Dual Offset Key Chains mechanism to reduce authentication delay and computational cost associated with key chain commitment. We provide a description of the mechanism using two different modes for disclosing keys and demonstrate its security against a man-in-the-middle attack attempt. We compare our approach against the TESLA protocol in a 2-day simulation scenario, showing a reduction of 15.82% and 47.29% in computational cost, sender and receiver respectively, and a cumulative reduction in the communication overhead.
Proceedings Title
ICT Systems Security and Privacy Protection
Conference Dates
May 30-June 1, 2016
Conference Location
Ghent, BE
Conference Title
31st IFIP TC 11 International Conference (SEC 2016)


multicast authentication, smart grid, synchrophasors, wide area monitoring protection and control


Camara, S. , Anand, D. , Pillitteri, V. and Carmo, L. (2016), Multicast Delayed Authentication For Streaming Synchrophasor Data in the Smart Grid, ICT Systems Security and Privacy Protection, Ghent, BE, [online],, (Accessed June 19, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created May 29, 2016, Updated October 12, 2021