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src: avoid redundant KEM encapsulation copies - #64553
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KEM encapsulation produces separate ciphertext and shared-secret allocations. The existing DeriveBitsJob path packs both values into an intermediate buffer, then copies them again into separate buffers. Instead, this uses a dedicated KEMEncapsulateJob to retain both outputs across the worker boundary and convert each directly through ByteSource. This removes the intermediate allocation and at least one complete round of copies. Signed-off-by: Filip Skokan <panva.ip@gmail.com>
nodejs-github-bot
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Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@## main #64553 +/- ##
==========================================
- Coverage 90.24% 90.23% -0.02%
==========================================
Files 739 739 Lines 241698 241709 +11 Branches 45556 45551 -5 ==========================================
- Hits 218129 218113 -16 - Misses 15103 15119 +16 - Partials 8466 8477 +11
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jasnell
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aduh95 pushed a commit
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Jul 30, 2026
KEM encapsulation produces separate ciphertext and shared-secret allocations. The existing DeriveBitsJob path packs both values into an intermediate buffer, then copies them again into separate buffers. Instead, this uses a dedicated KEMEncapsulateJob to retain both outputs across the worker boundary and convert each directly through ByteSource. This removes the intermediate allocation and at least one complete round of copies. Signed-off-by: Filip Skokan <panva.ip@gmail.com> PR-URL: #64553 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
panva added a commit
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Aug 6, 2026
KEM encapsulation produces separate ciphertext and shared-secret allocations. The existing DeriveBitsJob path packs both values into an intermediate buffer, then copies them again into separate buffers. Instead, this uses a dedicated KEMEncapsulateJob to retain both outputs across the worker boundary and convert each directly through ByteSource. This removes the intermediate allocation and at least one complete round of copies. Signed-off-by: Filip Skokan <panva.ip@gmail.com> PR-URL: nodejs#64553 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
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aduh95 pushed a commit
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Aug 6, 2026
KEM encapsulation produces separate ciphertext and shared-secret allocations. The existing DeriveBitsJob path packs both values into an intermediate buffer, then copies them again into separate buffers. Instead, this uses a dedicated KEMEncapsulateJob to retain both outputs across the worker boundary and convert each directly through ByteSource. This removes the intermediate allocation and at least one complete round of copies. Signed-off-by: Filip Skokan <panva.ip@gmail.com> PR-URL: #64553 Backport-PR-URL: #65087 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
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KEM encapsulation produces separate ciphertext and shared-secret allocations. The existing
DeriveBitsJobpath packs both values into an intermediate buffer, then copies them again into separate buffers.Instead, this uses a dedicated KEMEncapsulateJob to retain both outputs across the worker boundary and convert each directly through ByteSource. This removes the intermediate allocation and at least one complete round of copies.