Function readiness_hex_decode

src/ui/http_server.c:1726–1739

}

static bool readiness_hex_decode(const char *hex, uint8_t out[CBM_SHA256_DIGEST_LEN]) {
    if (!hex || strlen(hex) != CBM_SHA256_HEX_LEN) {
        return false;
    }
    for (size_t i = 0; i < CBM_SHA256_DIGEST_LEN; i++) {
        int high = readiness_hex_nibble(hex[i * 2U]);
        int low = readiness_hex_nibble(hex[i * 2U + 1U]);
        if (high < 0 || low < 0) {
            return false;
        }
        out[i] = (uint8_t)((high << 4) | low);
    }
    return true;
}

static void readiness_hex_encode(const uint8_t bytes[CBM_SHA256_DIGEST_LEN],
                                 char out[CBM_SHA256_HEX_LEN + 1U]) {