int index = version.indexOf('-');

        String part1;
        String part2 = null;

        if (index < 0) {
            part1 = version;
        } else {
            part1 = version.substring(0, index);
            part2 = version.substring(index + 1);
        }

        if (part2 != null) {
            if (part2.length() == 1 || !part2.startsWith("0")) {
                buildNumber = tryParseInt(part2);

	endVal, endErr := e.End.evalNode(r, tableAlias)
	if endErr != nil {
		return nil, endErr
	}

	part1, err1 := stVal.compareOp(opLte, arg)
	if err1 != nil {
		return nil, err1
	}

	part2, err2 := arg.compareOp(opLte, endVal)
	if err2 != nil {
		return nil, err2
	}

	result := part1 && part2
	if e.Not {
		result = !result
	}

	return FromBool(result), nil
}

Em muitos frameworks e sistemas, apenas lidar com segurança e autenticação exige muito esforço e código (em muitos casos isso pode ser 50% ou mais de todo o código escrito).

**FastAPI** tem muitas ferramentas para ajudar você com a parte de **Segurança** facilmente, rapidamente, de uma forma padrão, sem ter que estudar e aprender tudo sobre especificações de segurança.

Mas primeiro, vamos verificar alguns pequenos conceitos.

## Está com pressa?

* For HTTPS, **the server** needs to **have "certificates"** generated by a **third party**.
    * Those certificates are actually **acquired** from the third party, not "generated".
* Certificates have a **lifetime**.
    * They **expire**.
    * And then they need to be **renewed**, **acquired again** from the third party.
* The encryption of the connection happens at the **TCP level**.
    * That's one layer **below HTTP**.

	currentFI := fi

	// Allocate parts similar to incoming slice.
	fi.Parts = make([]ObjectPartInfo, len(parts))

	// Validate each part and then commit to disk.
	for i, part := range parts {
		partIdx := objectPartIndex(currentFI.Parts, part.PartNumber)
		// All parts should have same part number.
		if partIdx == -1 {
			invp := InvalidPart{
				PartNumber: part.PartNumber,
				GotETag:    part.ETag,
			}

		Checksums:  checksums,
	}

	// Update part info if it already exists.
	for i, part := range fi.Parts {
		if partNumber == part.Number {
			fi.Parts[i] = partInfo
			return
		}
	}

	// Proceed to include new part info.
	fi.Parts = append(fi.Parts, partInfo)

	// Parts in FileInfo should be in sorted order by part number.

		}
		// Skip main checksum
		b = b[length:]
		parts, n := binary.Uvarint(b)
		if n <= 0 {
			break
		}
		if !typ.Is(ChecksumIncludesMultipart) {
			continue
		}

		if len(res) == 0 {
			res = make([]map[string]string, parts)
		}
		b = b[n:]
		for part := 0; part < int(parts); part++ {
			if len(b) < length {
				break
			}
			// Read part checksum

		return 0, o.Size, 0, 0, 0, nil
	}

	// Assemble slice of (decrypted) part sizes in `sizes`
	var sizes []int64
	var decObjSize int64 // decrypted total object size
	if o.isMultipart() {
		sizes = make([]int64, len(o.Parts))
		for i, part := range o.Parts {
			var partSize uint64
			partSize, err = sio.DecryptedSize(uint64(part.Size))
			if err != nil {
				err = errObjectTampered
				return
			}

	ModTime    time.Time         `json:"modTime" msg:"mt"`    // Date and time at which the part was uploaded.
	Index      []byte            `json:"index,omitempty" msg:"i,omitempty"`
	Checksums  map[string]string `json:"crc,omitempty" msg:"crc,omitempty"`   // Content Checksums
	Error      string            `json:"error,omitempty" msg:"err,omitempty"` // only set while reading part meta from drive.
}

	PART_ETAG=$(echo "${UPLOAD_PART_OUT}" | jq '.ETag')
	if [ "${idx}" == 10 ]; then
		PARTS="${PARTS}{\"ETag\": ${PART_ETAG}, \"ChecksumSHA256\": \"${PART_CHKSUM}\", \"PartNumber\": ${idx}}"
	else
		PARTS="${PARTS}{\"ETag\": ${PART_ETAG}, \"ChecksumSHA256\": \"${PART_CHKSUM}\", \"PartNumber\": ${idx}},"
	fi
done

echo "{\"Parts\":[${PARTS}]}" >fileparts.json
jq <fileparts.json