}

// Malform chunk size given a request signed using streaming signatureV4.
func malformChunkSizeSigV4(req *http.Request, badSize int64) (*http.Request, error) {
	bufReader := bufio.NewReader(req.Body)
	_, chunkSignature, err := readChunkLine(bufReader)
	if err != nil {
		return nil, err
	}

	n := badSize
	newHexChunkSize := []byte(fmt.Sprintf("%x", n))
	newChunkHdr := []byte(fmt.Sprintf("%s"+s3ChunkSignatureStr+"%s\r\n",