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Add warning for SHA-1 File Catalog - #27805
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Dongbo Wang (daxian-dbw) merged 8 commits intoOct 29, 2026
Merged
Dongbo Wang (daxian-dbw) merged 8 commits into
Dongbo Wang (daxian-dbw) merged 8 commits into
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Pull request overview
This PR adds an advisory warning when New-FileCatalog/Test-FileCatalog operate on legacy catalog version 1 (SHA-1), encouraging use of catalog version 2 (SHA-256) without breaking compatibility.
Changes:
- Added a helper to emit a warning when the catalog version indicates SHA-1 (legacy v1).
- Invoked the warning during both catalog generation and validation flows.
- Added a new localized resource string for the warning text.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| src/System.Management.Automation/security/CatalogHelper.cs | Adds and invokes a warning helper for legacy (v1/SHA-1) catalogs during generate/validate operations. |
| src/System.Management.Automation/resources/CatalogStrings.resx | Introduces the user-facing warning string used by the cmdlet warning stream. |
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Patrick Meinecke (SeeminglyScience)
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LGTM!
Patrick Meinecke (SeeminglyScience)
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Aug 10, 2026
Patrick Meinecke (SeeminglyScience)
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Co-authored-by: Dongbo Wang <dongbow@microsoft.com>
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PR Summary
Add warning against using weak SHA-1 File Catalog
PR Context
PR Checklist
.h,.cpp,.cs,.ps1and.psm1files have the correct copyright header