ciphertext  := sealed_chunk_0   ||       sealed_chunk_1   ||       sealed_chunk_2   ||       ...
```

In case of a S3 multi-part operation each part is en/decrypted with the scheme shown in Figure 1. However, for each part a unique secret key is derived from the OEK and the part number using a PRF. So in case of multi-part not the OEK but the output of `PRF(OEK, part_id)` is used as secret key.

#### Cryptographic Primitives

			res = make([]map[string]string, parts)
		}
		b = b[n:]
		for part := 0; part < int(parts); part++ {
			if len(b) < length {
				break
			}
			// Read part checksum
			cs := base64.StdEncoding.EncodeToString(b[:length])
			b = b[length:]
			if res[part] == nil {
				res[part] = make(map[string]string, 1)
			}
			res[part][typ.String()] = cs
		}
	}
	return res
}

    val requestBody: RequestBody = "".toRequestBody(null)
    var part: MultipartBody.Part = MultipartBody.Part.create(null, requestBody)
    part = MultipartBody.Part.create(headersOf(), requestBody)
    part = MultipartBody.Part.create(requestBody)
    part = MultipartBody.Part.createFormData("", "")
    part = MultipartBody.Part.createFormData("", "", requestBody)
    part = MultipartBody.Part.createFormData("", null, requestBody)

          Object part = parts.next();
          if (part != null) {
            appendable.append(Joiner.this.toString(part));
            break;
          }
        }
        while (parts.hasNext()) {
          Object part = parts.next();
          if (part != null) {
            appendable.append(separator);
            appendable.append(Joiner.this.toString(part));
          }
        }

	sha256sum := ""
	var opts ObjectOptions
	// Iterating over creatPartCases to generate multipart chunks.
	for _, part := range parts {
		_, err = obj.PutObjectPart(context.Background(), part.bucketName, part.objName, part.uploadID, part.PartID, mustGetPutObjReader(t, bytes.NewBufferString(part.inputReaderData), part.inputDataSize, part.inputMd5, sha256sum), opts)
		if err != nil {
			t.Fatalf("%s : %s", instanceType, err)
		}
	}

		Recursive: false,
		Immediate: false,
	})
	if err != nil {
		t.Errorf("Failure during deleting part.1 - %v", err)
	}

	err = firstDisk.WriteAll(t.Context(), bucket, pathJoin(object, fi.DataDir, "part.1"), []byte{})
	if err != nil {
		t.Errorf("Failure during creating part.1 - %v", err)
	}

					otherPart := getPartNum(other[0])
					if part != otherPart {
						fmt.Println("part ", part, " != other part", otherPart, other[0])
						continue
					}
					// fmt.Println("part ", part, "other part", otherPart, other[0])
					fmt.Printf("Reading version %q Part %d.\n", otherKey, otherPart)
					// os.Exit(0)
					otherM, err := readAndMap(other, part, block)
					if err != nil {
						fmt.Println(err)

	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.
}

			} else {
				dataErrsByPart[p][i] = verifyResp.Results[p]
			}
		}
	}

	// Build dataErrs by disk from dataErrs by part
	for part, disks := range dataErrsByPart {
		for disk := range disks {
			dataErrsByDisk[disk][part] = dataErrsByPart[part][disk]
		}
	}
	return dataErrsByDisk, dataErrsByPart

---
jjbb-template: generic-gradle-unix.yml
vars:
  - job-name: elastic+elasticsearch+%BRANCH%+intake+multijob+part1
  - job-display-name: "elastic / elasticsearch # %BRANCH% - intake part 1"
  - job-description: Elasticsearch %BRANCH% branch intake check part 1.