mirror of https://github.com/esphome/esphome.git
52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#include <cstdio>
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#include <cstring>
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#include "md5.h"
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#include "esphome/core/helpers.h"
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namespace esphome {
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namespace md5 {
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void MD5Digest::init() {
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memset(this->digest_, 0, 16);
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MD5Init(&this->ctx_);
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}
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void MD5Digest::add(const uint8_t *data, size_t len) { MD5Update(&this->ctx_, data, len); }
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void MD5Digest::calculate() { MD5Final(this->digest_, &this->ctx_); }
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void MD5Digest::get_bytes(uint8_t *output) { memcpy(output, this->digest_, 16); }
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void MD5Digest::get_hex(char *output) {
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for (size_t i = 0; i < 16; i++) {
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sprintf(output + i * 2, "%02x", this->digest_[i]);
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}
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}
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bool MD5Digest::equals_bytes(const char *expected) {
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for (size_t i = 0; i < 16; i++) {
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if (expected[i] != this->digest_[i]) {
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return false;
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}
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}
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return true;
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}
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bool MD5Digest::equals_hex(const char *expected) {
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for (size_t i = 0; i < 16; i++) {
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auto high = parse_hex(expected[i * 2]);
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auto low = parse_hex(expected[i * 2 + 1]);
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if (!high.has_value() || !low.has_value()) {
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return false;
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}
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auto value = (*high << 4) | *low;
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if (value != this->digest_[i]) {
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return false;
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}
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}
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return true;
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}
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} // namespace md5
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} // namespace esphome
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