Assume hash handles are always reusable in HashProviderCng. - #122813
#122813Merged
stephentoub merged 1 commit intoJan 5, 2026
dotnet:maindotnet/runtime:mainfrom
vcsjones:rm-nonreusablehashalgsvcsjones/runtime:rm-nonreusablehashalgsCopy head branch name to clipboard
Merged
Assume hash handles are always reusable in HashProviderCng.#122813stephentoub merged 1 commit intodotnet:maindotnet/runtime:mainfrom vcsjones:rm-nonreusablehashalgsvcsjones/runtime:rm-nonreusablehashalgsCopy head branch name to clipboard
stephentoub merged 1 commit into
dotnet:maindotnet/runtime:mainfrom
vcsjones:rm-nonreusablehashalgsvcsjones/runtime:rm-nonreusablehashalgsCopy head branch name to clipboard
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HashProviderCng was previously accounting for Windows 7 not supporting BCRYPT_HASH_REUSABLE_FLAG. We can assume this flag is always supported now that Windows 7 is not supported anymore.
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Pull request overview
This PR removes Windows 7 compatibility code from HashProviderCng by assuming that the BCRYPT_HASH_REUSABLE_FLAG is always supported, simplifying the implementation now that Windows 7 support has been dropped.
Key changes:
- Removed the
_reusablefield and all conditional logic that handled non-reusable hash scenarios - Simplified the constructor to always create reusable hash handles without fallback logic
- Streamlined the
Reset()method to always use the reusable flag
jkotas
approved these changes
Jan 3, 2026
bartonjs
approved these changes
Jan 5, 2026
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HashProviderCng was previously accounting for Windows 7 not supporting BCRYPT_HASH_REUSABLE_FLAG. We can assume this flag is always supported now that Windows 7 is not supported anymore.
Contributes to #71075.