lowrisc/opentitan

OpenTitan: Open source silicon root of trust

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Summary Information

Updated 1 hour ago
Added to GitGenius on September 19th, 2026
Created on August 26th, 2019
Open Issues & Pull Requests: 2,071 (-3)
GitHub issues: Enabled
Number of forks: 1,117
Total Stargazers: 3,650 (+0)
Total Subscribers: 109 (+0)

Repository Insights (GitGenius)

Median issue/PR response: 0.6 hours
Mean response time: 59.4 days
90th percentile: 122.9 days
Tracked items: 1,507

Most active contributors

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How this project is maintained

Roughly one issue in three opened in the past year never receives a reply. 100% of open issues come from outside the core team, so the backlog reflects real-world use rather than internal planning. Work labelled "SW:cryptolib" is answered fastest, typically in under an hour, while "SiVal:Autogen" waits about 4 weeks. 25% of tracked open issues have had no activity in three months. Only 30% of issues opened in the past year have been closed.

Charts & Analytics

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Issue Activity (beta)

Open issues: 1,066
New in 7 days: 11
Closed in 7 days: 14
Avg open age: 591 days
Stale 30+ days: 867
Stale 90+ days: 723

Recent activity

Opened in 7 days: 11
Closed in 7 days: 14
Comments in 7 days: 0
Events in 7 days: 0

Top labels

  • Component:ChipLevelTest (315)
  • Component:DV (268)
  • Priority:P2 (228)
  • SiVal:Autogen (129)
  • Earlgrey-PROD Candidate (110)
  • SW:cryptolib (107)
  • Component:RTL (102)
  • Type:Signoff (86)

Most active issues this week

Detailed Description

OpenTitan is an open source silicon root of trust project that provides hardware, software, and utilities for building trustworthy security foundations in silicon.

The project addresses the need for transparent and secure root of trust implementations by providing open IP designs that can be instantiated as full-featured products. Rather than relying on proprietary or closed-source security foundations, OpenTitan enables enterprises, platform providers, and chip manufacturers to inspect, understand, and verify the silicon components responsible for establishing trust in their systems. The approach centers on collaborative development of high-quality, auditable hardware and software components organized in a monolithic repository structure.

Organizations should adopt OpenTitan if they require a verifiable root of trust implementation and have the expertise to work with hardware description languages and silicon design processes. The project suits chip manufacturers, platform providers, and enterprises building security-critical systems where transparency in the trust foundation is a priority. The comprehensive documentation available online covers all intellectual property blocks and tools, supporting both implementation and contribution workflows.

The project maintains active governance structures with documented contribution guidelines and project organization processes. Development activity spans hardware design in SystemVerilog, software components, and supporting utilities across the monorepo, indicating sustained work across multiple technical domains required for a complete root of trust system.