if err != nil {
				return
			}
			if sse, err = encrypt.NewSSEC(clientKey[:]); err != nil {
				return
			}
			opts.ServerSideEncryption = encrypt.SSECopy(sse)
			return
		}
		return
	}

	if crypto.SSEC.IsRequested(header) {
		clientKey, err = crypto.SSEC.ParseHTTP(header)
		if err != nil {
			return
		}
		if sse, err = encrypt.NewSSEC(clientKey[:]); err != nil {
			return
		}

	// are slightly larger due to encryption overhead.
	// Further, we have to adjust the ETags of parts when using SSE-S3.
	// Due to AWS S3, SSE-S3 encrypted parts return the plaintext ETag
	// being the content MD5 of that particular part. This is not the
	// case for SSE-C and SSE-KMS objects.
	if kind, ok := crypto.IsEncrypted(listPartsInfo.UserDefined); ok {
		var objectEncryptionKey []byte

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

	// If src == dst and either
	// - the object is encrypted using SSE-C and two different SSE-C keys are present
	// - the object is encrypted using SSE-S3 and the SSE-S3 header is present
	// - the object storage class is not changing
	// then execute a key rotation.
	if cpSrcDstSame && (sseCopyC && sseC) && !chStorageClass {

		}
		// Make sure to return object info to provide extra information.
		return &GetObjectReader{
			ObjInfo: objInfo,
		}, toObjectErr(errMethodNotAllowed, bucket, object)
	}

	// Set NoDecryption for SSE-C objects and if replication request
	if crypto.SSEC.IsEncrypted(objInfo.UserDefined) && opts.ReplicationRequest {
		opts.NoDecryption = true
	}

	if objInfo.Size == 0 {