return
		}
		reader = etag.Wrap(encReader, reader)

		wantSize := int64(-1)
		if length >= 0 {
			info := ObjectInfo{Size: length}
			wantSize = info.EncryptedSize()
		}

		srcInfo.Reader, err = hash.NewReader(ctx, reader, wantSize, "", "", actualPartSize)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}

			targetSize, _ = srcInfo.GetActualSize()
		case isSourceEncrypted && isTargetEncrypted:
			objInfo := ObjectInfo{Size: actualSize}
			targetSize = objInfo.EncryptedSize()
		case !isSourceEncrypted && isTargetEncrypted:
			targetSize = srcInfo.EncryptedSize()
		case isSourceEncrypted && !isTargetEncrypted:
			targetSize, _ = srcInfo.DecryptedSize()
		}