An Effective Logic Obfuscation Technique with AES Encryption Module for Design Protection

  • Binu P. KumarEmail author
  • M. Nirmala Devi
Conference paper
Part of the Lecture Notes in Networks and Systems book series (LNNS, volume 98)


The integration of Globalization in the semiconductor industry has resulted in the outsourcing of IC’s by many companies. A person with a malicious intend in an untrusted foundry can pirate the IC’s, overbuild the IC’s and sell it illegally in the black market, reverse engineer the IC to obtain useful information about the IP, insert hardware trojans to disrupt the functionality of the IC or to leak sensitive information. Logic Encryption has become essential in order to protect the rights of the IP’s owner and to save the IC design company from potential loss of money. It involves modifying the netlist to obfuscate the functionality of the design such that only on application with the correct key can unlock the design. We propose an efficient technique to controllably corrupt the design such that hamming difference of 50% is obtained between the correct and wrong outputs. The selected nets are encrypted using AES-128 block. The proposed encryption technique provides high security compared to the conventional encryption techniques using XOR’s or multiplexers as it is insensitive to key sensitization attacks.


Logic encryption Hardware security SCOAP measures Hamming difference 


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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Department of Electronics and Communication Engineering, Amrita School of EngineeringAmrita Vishwa VidyapeethamCoimbatoreIndia

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