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This commit is contained in:
J. Nick Koston
2026-01-14 19:36:51 -10:00
parent 6625e52842
commit 46d4c4bf3d
1 changed files with 6 additions and 3 deletions
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esphome/core/hash_base.h
+6 -3
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@@ -44,9 +44,12 @@ class HashBase {
virtual size_t get_size() const = 0;
protected:
// 32-byte alignment required for ESP32-S2/S3 hardware SHA DMA operations.
// This also sets the class alignment to 32, ensuring derived objects are properly aligned.
alignas(32) uint8_t digest_[32]; // Storage sized for max(MD5=16, SHA256=32) bytes
// ESP32-S2/S3 hardware SHA uses DMA that requires 32-byte aligned buffers.
// Other platforms either don't have hardware SHA or don't require alignment.
#if defined(USE_ESP32_VARIANT_ESP32S2) || defined(USE_ESP32_VARIANT_ESP32S3)
alignas(32)
#endif
uint8_t digest_[32]; // Storage sized for max(MD5=16, SHA256=32) bytes
};
} // namespace esphome