Variable Window Power Spectral Density Attack

Philip Hodgers, Maire O'Neill, Kean Hong Boey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


Side channel attacks permit the recovery of the secret key held within a cryptographic device. This paper presents a new EM attack in the frequency domain, using a power spectral density analysis that permits the use of variable spectral window widths for each trace of the data set and demonstrates how this attack can therefore overcome both inter-and intra-round random insertion type countermeasures. We also propose a novel re-alignment method exploiting the minimal power markers exhibited by electromagnetic emanations. The technique can be used for the extraction and re-alignment of round data in the time domain.
Original languageEnglish
Title of host publicationInformation Forensics and Security (WIFS), 2011 IEEE International Workshop on
Number of pages6
Publication statusPublished - Nov 2011
EventIEEE Intl. Workshop on Information Forensics and Security - , Brazil
Duration: 01 Nov 201101 Nov 2011


ConferenceIEEE Intl. Workshop on Information Forensics and Security


  • EM
  • side-channel attacks
  • Power analysis


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