IoT security: On-chip secure deletion scheme using ECC modulation in IoT appliances

Na Young Ahn, Dong Hoon Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


NAND flash memory-based IoT devices inherently suffer from data retention issues. In IoT security, these retention issues are significant and require a robust solution for secure deletion. Secure deletion methods can be categorized into off-chip and on-chip schemes. Off-chip secure deletion schemes, based on block-level erasure operations, are unable to perform real-time trim operations. Consequently, they are vulnerable to hacking threats. On the other hand, on-chip secure deletion schemes enable real-time trim operations by performing deletion on a page-by-page basis. However, the on-chip scheme introduces a challenge of program disturbance for neighboring page data. The proposed on-chip deletion scheme tackles this problem by utilizing ECC code modulation through a partial program operation. This approach significantly reduces the program disturbance issue associated with neighboring page data. Moreover, the proposed code modulation secure deletion scheme allows for real-time verification of the deletion of original data.

Original languageEnglish
Article number103422
JournalComputers and Security
Publication statusPublished - 2023 Oct

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd


  • Deletion
  • ECC modulation
  • NAND flash memory
  • Partial program
  • Program disturbance
  • Verification

ASJC Scopus subject areas

  • General Computer Science
  • Law


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