Zeroize sensitive memory in TLS KDF#429
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simo5 merged 1 commit intolatchset:mainfrom Mar 11, 2026
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Implement the Drop trait for TLSKDFOperation to securely zero out the client random, server random, and session hash using zeromem. Additionally, explicitly zeroize the derived key material (dkm) buffer immediately after use. This prevents cryptographic secrets from lingering in memory, reducing the risk of data leakage. Signed-off-by: Simo Sorce <simo@redhat.com>
Jakuje
approved these changes
Mar 11, 2026
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Description
Implement the Drop trait for TLSKDFOperation to securely zero out the client random, server random, and session hash using zeromem. Additionally, explicitly zeroize the derived key material (dkm) buffer immediately after use. This prevents cryptographic secrets from lingering in memory, reducing the risk of data leakage.
Reviewer's checklist: