Patent · US Active

Method and system for providing an update of code on a memory-constrained device

US10346619B2 · kind B2 · utility

1Cited by

0References

13Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Ghassan Karame · Heidelberg, DE
Wenting Li · Longbeilingcun, CN

Key dates

Filing date	Sep 30, 2014
Grant date	Jul 9, 2019
Priority date	—
Expiry date	Mar 5, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/30
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for providing an update of code on a memory-constrained device includes a) determining a minimum necessary compressed code space (MNCCS) of the update of code, b) dividing the update of code into a plurality of chunks, c) applying an All-Or-Nothing Encryption scheme (AONE) on each chunk, d) providing integrity information of least one intermediate ciphertext block of each AONE encrypted chunk, e) verifying integrity of the one or more intermediate ciphertext blocks based on the provided integrity information, f) providing the encryption key of the AONE for decryption of the update of code if integrity was verified, and g) decrypting the intermediate ciphertext blocks using the provided encryption key and updating the code.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.