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Add sha256 support

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This is a breakout from https://github.com/esphome/esphome/pull/10809
This commit is contained in:
J. Nick Koston
2025-09-25 08:55:43 -05:00
parent 7899d4256c
commit 2bc1cc2ae7
2 changed files with 10 additions and 46 deletions
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26
esphome/components/md5/md5.cpp
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@@ -39,32 +39,6 @@ void MD5Digest::add(const uint8_t *data, size_t len) { br_md5_update(&this->ctx_
void MD5Digest::calculate() { br_md5_out(&this->ctx_, this->digest_); } void MD5Digest::calculate() { br_md5_out(&this->ctx_, this->digest_); }
#endif // USE_RP2040 #endif // USE_RP2040
void MD5Digest::get_bytes(uint8_t *output) { memcpy(output, this->digest_, 16); }
void MD5Digest::get_hex(char *output) {
for (size_t i = 0; i < 16; i++) {
uint8_t byte = this->digest_[i];
output[i * 2] = format_hex_char(byte >> 4);
output[i * 2 + 1] = format_hex_char(byte & 0x0F);
}
}
bool MD5Digest::equals_bytes(const uint8_t *expected) {
for (size_t i = 0; i < 16; i++) {
if (expected[i] != this->digest_[i]) {
return false;
}
}
return true;
}
bool MD5Digest::equals_hex(const char *expected) {
uint8_t parsed[16];
if (!parse_hex(expected, parsed, 16))
return false;
return equals_bytes(parsed);
}
} // namespace md5 } // namespace md5
} // namespace esphome } // namespace esphome
#endif #endif

30
esphome/components/md5/md5.h
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@@ -3,6 +3,8 @@
#include "esphome/core/defines.h" #include "esphome/core/defines.h"
#ifdef USE_MD5 #ifdef USE_MD5
#include "esphome/core/hash_base.h"
#ifdef USE_ESP32 #ifdef USE_ESP32
#include "esp_rom_md5.h" #include "esp_rom_md5.h"
#define MD5_CTX_TYPE md5_context_t #define MD5_CTX_TYPE md5_context_t
@@ -26,38 +28,26 @@
namespace esphome { namespace esphome {
namespace md5 { namespace md5 {
class MD5Digest { class MD5Digest : public HashBase {
public: public:
MD5Digest() = default; MD5Digest() = default;
~MD5Digest() = default; ~MD5Digest() override = default;
/// Initialize a new MD5 digest computation. /// Initialize a new MD5 digest computation.
void init(); void init() override;
/// Add bytes of data for the digest. /// Add bytes of data for the digest.
void add(const uint8_t *data, size_t len); void add(const uint8_t *data, size_t len) override;
void add(const char *data, size_t len) { this->add((const uint8_t *) data, len); } using HashBase::add; // Bring base class overload into scope
/// Compute the digest, based on the provided data. /// Compute the digest, based on the provided data.
void calculate(); void calculate() override;
/// Retrieve the MD5 digest as bytes. /// Get the size of the hash in bytes (16 for MD5)
/// The output must be able to hold 16 bytes or more. size_t get_size() const override { return 16; }
void get_bytes(uint8_t *output);
/// Retrieve the MD5 digest as hex characters.
/// The output must be able to hold 32 bytes or more.
void get_hex(char *output);
/// Compare the digest against a provided byte-encoded digest (16 bytes).
bool equals_bytes(const uint8_t *expected);
/// Compare the digest against a provided hex-encoded digest (32 bytes).
bool equals_hex(const char *expected);
protected: protected:
MD5_CTX_TYPE ctx_{}; MD5_CTX_TYPE ctx_{};
uint8_t digest_[16];
}; };
} // namespace md5 } // namespace md5