Clear expandLabelPrk#9902
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Pull request overview
This PR strengthens sensitive-data handling for ECH by tracking and explicitly zeroizing the expandLabelPrk buffer during ECH acceptance processing.
Changes:
- Register
expandLabelPrkwithwc_MemZero_AddwhenWOLFSSL_CHECK_MEM_ZEROis enabled. - Explicitly clear
expandLabelPrkwithForceZerobefore returning from the ECH paths. - Validate the zeroization with
wc_MemZero_CheckunderWOLFSSL_CHECK_MEM_ZERO.
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douzzer
approved these changes
Mar 7, 2026
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F-359