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Analyzed about 5 hours ago. based on code collected 1 day ago.

Project Summary

The tcb package contains core components of our tcb suite implementing the alternative password shadowing scheme on Openwall GNU/*/Linux (Owl). It is being made available separately from Owl primarily for use by other distributions.

The package consists of three components: pam_tcb, libnss_tcb, and libtcb.

pam_tcb is a PAM module which supersedes pam_unix. It also implements the tcb password shadowing scheme. The tcb scheme allows many core system utilities (passwd(1) being the primary example) to operate with little privilege. libnss_tcb is the accompanying NSS module. libtcb contains code shared by the PAM and NSS modules and is also used by user management tools on Owl due to our shadow suite patches.

Tags

authentication authorization infosec linux nss pam password security shadow shadowing sysadmin systems_administration

In a Nutshell, Openwall - tcb...

BSD 3-clause "New" or "Revised" License
Permitted

Commercial Use

Modify

Distribute

Place Warranty

Forbidden

Hold Liable

Use Trademarks

Required

Include Copyright

Include License

These details are provided for information only. No information here is legal advice and should not be used as such.

Project Security

Vulnerabilities per Version ( last 10 releases )

There are no reported vulnerabilities

Project Vulnerability Report

Security Confidence Index

Poor security track-record
Favorable security track-record

Vulnerability Exposure Index

Many reported vulnerabilities
Few reported vulnerabilities

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About Project Security

Languages

C
92%
2 Other
8%

30 Day Summary

May 25 2026 — Jun 24 2026

12 Month Summary

Jun 24 2025 — Jun 24 2026
  • 16 Commits
    Up + 1 (6%) from previous 12 months
  • 4 Contributors
    Up + 1 (33%) from previous 12 months