Scholarlink

<p>The decoupling of integrated circuit design and manufacturing has raised significant concerns about intellectual property (IP) piracy, unauthorized overproduction, and security vulnerabilities. Logic locking technology, a countermeasure that integrates key-controlled gates into circuit netlists, ensures functionality only with the correct key. However, various attacks have exposed vulnerabilities in these techniques, prompting efforts to enhance security. This paper introduces the Pseudo Fault Sensitization Attack (PFSA) based on the key-invalidating(KI)-ATPG algorithm, which efficiently bypasses existing defenses. KI-ATPG enhances the traditional ATPG algorithm’s X-filling capability, minimizing fault injections by leveraging logic blocking to invalidate key bits. By analyzing ideal and pseudo-fault responses, PFSA recovers keys with high accuracy. Experimental results demonstrate that PFSA significantly achieved a reduction of 29.17% to 75.19% in the required fault injections, thereby lowering the cost and time of attacks, while significantly improving attack efficiency.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

PFSA: Pseudo Fault Sensitization Attack on Logic Locking via Key-invalidation

  • 期刊论文

  • 发表日期：

    2026年1月14日

查看全文
  • Lei Zhang,
  • Xuejun Liu,
  • Dengyun Lei,
  • Danpeng Liao,
  • Yuan Liu

摘要

The decoupling of integrated circuit design and manufacturing has raised significant concerns about intellectual property (IP) piracy, unauthorized overproduction, and security vulnerabilities. Logic locking technology, a countermeasure that integrates key-controlled gates into circuit netlists, ensures functionality only with the correct key. However, various attacks have exposed vulnerabilities in these techniques, prompting efforts to enhance security. This paper introduces the Pseudo Fault Sensitization Attack (PFSA) based on the key-invalidating(KI)-ATPG algorithm, which efficiently bypasses existing defenses. KI-ATPG enhances the traditional ATPG algorithm’s X-filling capability, minimizing fault injections by leveraging logic blocking to invalidate key bits. By analyzing ideal and pseudo-fault responses, PFSA recovers keys with high accuracy. Experimental results demonstrate that PFSA significantly achieved a reduction of 29.17% to 75.19% in the required fault injections, thereby lowering the cost and time of attacks, while significantly improving attack efficiency.