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This commit is contained in:
J. Nick Koston
2026-01-14 19:40:21 -10:00
parent 46d4c4bf3d
commit 9296fc8d4a
1 changed files with 4 additions and 3 deletions
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esphome/core/hash_base.h
+4 -3
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@@ -44,9 +44,10 @@ class HashBase {
virtual size_t get_size() const = 0;
protected:
// 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)
// ESP32 variants with DMA-based hardware SHA (all except original ESP32) require 32-byte aligned buffers.
// Original ESP32 uses a different hardware SHA implementation without DMA alignment requirements.
// Other platforms (ESP8266, RP2040, LibreTiny) use software SHA and don't need alignment.
#if defined(USE_ESP32) && !defined(USE_ESP32_VARIANT_ESP32)
alignas(32)
#endif
uint8_t digest_[32]; // Storage sized for max(MD5=16, SHA256=32) bytes