}

	pReader := NewPutObjReader(hashReader)

	_, isEncrypted := crypto.IsEncrypted(mi.UserDefined)
	_, replicationStatus := mi.UserDefined[xhttp.AmzBucketReplicationStatus]
	_, sourceReplReq := r.Header[xhttp.MinIOSourceReplicationRequest]
	var objectEncryptionKey crypto.ObjectKey
	if isEncrypted {
		if !crypto.SSEC.IsRequested(r.Header) && crypto.SSEC.IsEncrypted(mi.UserDefined) && !replicationStatus {

	}

	actualSize := data.ActualSize()
	if actualSize < 0 {
		_, encrypted := crypto.IsEncrypted(fi.Metadata)
		compressed := fi.IsCompressed()
		switch {
		case compressed:
			// ... nothing changes for compressed stream.
			// if actualSize is -1 we have no known way to
			// determine what is the actualSize.
		case encrypted:
			decSize, err := sio.DecryptedSize(uint64(n))
			if err == nil {

			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
	}

	origETag := objInfo.ETag
	if kind, encrypted := crypto.IsEncrypted(objInfo.UserDefined); encrypted {
		switch kind {
		case crypto.S3:
			w.Header().Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionAES)

			if opts.EncryptFn != nil {
				fi.Checksum = opts.EncryptFn("object-checksum", fi.Checksum)
			}
		}
	} else if fi.Checksum == nil && opts.WantChecksum != nil {
		// Trailing headers checksums should now be filled.
		fi.Checksum = opts.WantChecksum.AppendTo(nil, nil)
		if opts.EncryptFn != nil {
			fi.Checksum = opts.EncryptFn("object-checksum", fi.Checksum)
		}
	}

	WantServerSideChecksumType hash.ChecksumType // if set, we compute a server-side checksum of this type

	NoDecryption                        bool      // indicates if the stream must be decrypted.
	PreserveETag                        string    // preserves this etag during a PUT call.
	NoLock                              bool      // indicates to lower layers if the caller is expecting to hold locks.