if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	zipInfo := zipObjInfo.ArchiveInfo(r.Header)
	if len(zipInfo) == 0 {
		opts.EncryptFn, err = zipObjInfo.metadataEncryptFn(r.Header)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}

		zipInfo, err = updateObjectMetadataWithZipInfo(ctx, objectAPI, bucket, zipPath, opts)
	}

	if len(cs) == len(o.Parts) {
		for i := range o.Parts {
			o.Parts[i].Checksums = cs[i]
		}
	}
	return
}

// metadataEncryptFn provides an encryption function for metadata.
// Will return nil, nil if unencrypted.
func (o *ObjectInfo) metadataEncryptFn(headers http.Header) (objectMetaEncryptFn, error) {
	kind, _ := crypto.IsEncrypted(o.UserDefined)
	switch kind {
	case crypto.SSEC:

	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	opts.EncryptFn, err = objInfo.metadataEncryptFn(r.Header)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	if r.Header.Get(xMinIOExtract) == "true" && HasSuffix(object, archiveExt) {