Establishing trust in untrusted IC testing and provisioning environment

US11899827B2 · kind B2 · utility

Assignee

• University of Florida Research Foundation, INC. · US

Inventors

• Swarup Bhunia · Gainesville, US
• Atul Prasad Deb Nath · Gainesville, US
• Kshitij Raj · Gainesville, US
• Sandip Ray · San Francisco, US
• Patanjali Sristi Lakshmiprasanna Sriramakumara · Gainesville, US

Key dates

• Filing date: May 6, 2022
• Grant date: Feb 13, 2024
• Expiry date: Jun 8, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2221/034
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A system for secure testing and provisioning of an integrated circuit (IC) includes, in part, a secure reconfigurable key provisioning architecture (SLEEVE) module disposed in the IC, and a secure asset provisioning hardware entity (SAPHE) module. The IC may include, in part, a modified IEEE 1500 wrapper to control its operation modes. The SLEEVE module may include, in part, an encoding/decoding module and an unlocking module. The encoding/decoding module may include, in part, a decode key stream cipher module, an encode key stream cipher module, Seed Key programmable linear-feedback shift registers (LFSRs), Initialization Vector (IV) LFSRs, and configuration registers. The encoding/decoding module may be configured to generate key bits for decoding and encoding inputs and outputs of the IC. The unlocking module may include, in part, a pattern matching block and a counter. The unlocking module may be configured to enable write access to the configuration registers. The SAPHE module may include, in part, a microcontroller, a logging module, a provisioning module, and a communications module. The SAPHE module may be configured to interact with the IC to obtain a status of the IC duri…