type ObjectKey [32]byte

// GenerateKey generates a unique ObjectKey from a 256 bit external key
// and a source of randomness. If random is nil the default PRNG of the
// system (crypto/rand) is used.
func GenerateKey(extKey []byte, random io.Reader) (key ObjectKey) {
	if random == nil {
		random = rand.Reader
	}
	if len(extKey) != 32 { // safety check
		logger.CriticalIf(context.Background(), errors.New("crypto: invalid key length"))

	}{
		{"shastring", "", "shastring"},
		{emptySHA256, "", emptySHA256},
		{"", "", emptySHA256},
		{"", "X-Amz-Credential=random", unsignedPayload},
		{"", "X-Amz-Credential=random&X-Amz-Content-Sha256=" + unsignedPayload, unsignedPayload},
		{"", "X-Amz-Credential=random&X-Amz-Content-Sha256=shastring", "shastring"},
	}

	for i, testCase := range testCases {

	letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
	letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting in 63 bits
)

// Random number state.
// We generate random temporary file names so that there's a good
// chance the file doesn't exist yet.
var (
	randN  uint32
	randmu sync.Mutex
)

// Temp files created in default Tmp dir

	if w == 0 {
		return true
	}

	return false
}

// mustGetUUID - get a random UUID.
func mustGetUUID() string {
	u, err := uuid.NewRandom()
	if err != nil {
		logger.CriticalIf(GlobalContext, err)
	}

	return u.String()
}

// mustGetUUIDBytes - get a random UUID as 16 bytes unencoded.
func mustGetUUIDBytes() []byte {
	u, err := uuid.NewRandom()
	if err != nil {

		connPingInterval:   connPingInterval,
		tlsConfig:          o.tlsConfig,
		incomingBytes:      o.incomingBytes,
		outgoingBytes:      o.outgoingBytes,
	}
	if debugPrint {
		// Random Mux ID
		c.NextID = rand.Uint64()
	}
	if !strings.HasPrefix(o.remote, "https://") && !strings.HasPrefix(o.remote, "wss://") {
		c.baseFlags |= FlagCRCxxh3
	}

			APICode:        "KMS.InternalException",
			Err:            errors.New("invalid algorithm: " + algorithm),
		}
	}

	nonce, err := sioutil.Random(aead.NonceSize())
	if err != nil {
		return DEK{}, err
	}

	plaintext, err := sioutil.Random(32)
	if err != nil {
		return DEK{}, err
	}
	associatedData, _ := context.MarshalText()
	ciphertext := aead.Seal(nil, nonce, plaintext, associatedData)

	// FileNameFunc must ensure collisions in filenames do not occur.
	// Do not rely on timestamps to be unique, high throughput writes
	// may fall on the same timestamp.
	// Eg.
	// 	2020-03-28_15-00-945-<random-hash>.log
	// When FileNameFunc is not specified, DefaultFilenameFunc will be used.
	FileNameFunc func() string

	// Compress specify if you want the logs to be compressed after rotation.
	Compress bool
}

func testPostPolicyBucketHandler(obj ObjectLayer, instanceType string, t TestErrHandler) {
	if err := newTestConfig(globalMinioDefaultRegion, obj); err != nil {
		t.Fatalf("Initializing config.json failed")
	}

	// get random bucket name.
	bucketName := getRandomBucketName()

	var opts ObjectOptions
	// Register the API end points with Erasure/FS object layer.
	apiRouter := initTestAPIEndPoints(obj, []string{"PostPolicy"})

		panic("unit cannot exceed one hour")
	}
	return func(attempt uint) time.Duration {
		if attempt > 16 {
			// Protect against integer overflow
			attempt = 16
		}
		// sleep = random_between(unit, min(cap, base * 2 ** attempt))
		sleep := unit * time.Duration(1<<attempt)
		if sleep > cap {
			sleep = cap
		}
		sleep -= time.Duration(r.Float64() * float64(sleep-unit))
		return sleep
	}

	client kube.CLIClient, writer io.Writer, browser bool,
) error {
	// port preference:
	// - If --listenPort is specified, use it
	// - without --listenPort, prefer the remotePort but fall back to a random port
	var portPrefs []int
	if listenPort != 0 {
		portPrefs = []int{listenPort}
	} else {
		portPrefs = []int{remotePort, 0}
	}

	var err error
	for _, localPort := range portPrefs {