readableClaim, _ = accessKey.Claims[rc].(string)
			}
			openIDUserAccessKeys = madmin.OpenIDUserAccessKeys{
				MinioAccessKey: accessKey.ParentUser,
				ID:             id,
				ReadableName:   readableClaim,
			}
		}
		svcAccInfo := madmin.ServiceAccountInfo{
			AccessKey:  accessKey.AccessKey,
			Expiration: &accessKey.Expiration,
		}
		if accessKey.IsServiceAccount() {

		return
	}

	accessKey := mux.Vars(r)["accessKey"]
	if accessKey == "" {
		accessKey = cred.AccessKey
	}

	u, ok := globalIAMSys.GetUser(ctx, accessKey)
	targetCred := u.Credentials

	if !globalIAMSys.IsAllowed(policy.Args{
		AccountName:     cred.AccessKey,
		Groups:          cred.Groups,

					_ = store.deleteUserIdentity(ctx, u.AccessKey, svcUser)
					delete(cache.iamUsersMap, u.AccessKey)
				case u.IsTemp():
					_ = store.deleteUserIdentity(ctx, u.AccessKey, stsUser)
					delete(cache.iamSTSAccountsMap, u.AccessKey)
					delete(cache.iamUsersMap, u.AccessKey)
				}
				if store.group != nil {
					store.group.Forget(u.AccessKey)
				}
			}
		}
	}

	// policy is inherited from `user.AccessKey`.
	cred.ParentUser = user.AccessKey

	// Set the newly generated credentials.
	updatedAt, err := globalIAMSys.SetTempUser(ctx, cred.AccessKey, cred, "")
	if err != nil {
		writeSTSErrorResponse(ctx, w, ErrSTSInternalError, err)
		return
	}

	// Call hook for site replication.
	if cred.ParentUser != globalActiveCred.AccessKey {

	return nil
}

// Sign given request using Signature V2.
func signRequestV2(req *http.Request, accessKey, secretKey string) error {
	signer.SignV2(*req, accessKey, secretKey, false)
	return nil
}

// Sign given request using Signature V4.
func signRequestV4(req *http.Request, accessKey, secretKey string) error {
	// Get hashed payload.
	hashedPayload := req.Header.Get("x-amz-content-sha256")

		method     string
		bucketName string
		accessKey  string
		secretKey  string
		// Sent body
		body []byte
		// Expected response
		expectedRespStatus int
		lifecycleResponse  []byte
		errorResponse      APIErrorResponse
		shouldPass         bool
	}{
		// GET empty credentials
		{
			method: http.MethodGet, bucketName: bucketName,
			accessKey:          "",
			secretKey:          "",

	}

	r.Form.Del(xhttp.Expires)

	return ErrNone
}

func getReqAccessKeyV2(r *http.Request) (auth.Credentials, bool, APIErrorCode) {
	if accessKey := r.Form.Get(xhttp.AmzAccessKeyID); accessKey != "" {
		return checkKeyValid(r, accessKey)
	}

	// below is V2 Signed Auth header format, splitting on `space` (after the `AWS` string).
	// Authorization = "AWS" + " " + AWSAccessKeyId + ":" + Signature

	_, fsDir, err := prepareFS(t.Context())
	if err != nil {
		t.Fatal(err)
	}
	defer removeRoots([]string{fsDir})

	credentialTemplate := "%s/%s/%s/s3/aws4_request"
	now := UTCNow()
	accessKey := globalActiveCred.AccessKey

	testCases := []struct {
		form     http.Header
		expected APIErrorCode
	}{
		// (0) It should fail if 'X-Amz-Credential' is missing.
		{
			form:     http.Header{},

func validateCredentialfields(t *testing.T, testNum int, expectedCredentials credentialHeader, actualCredential credentialHeader) {
	if expectedCredentials.accessKey != actualCredential.accessKey {
		t.Errorf("Test %d: AccessKey mismatch: Expected \"%s\", got \"%s\"", testNum, expectedCredentials.accessKey, actualCredential.accessKey)
	}
	if !expectedCredentials.scope.date.Equal(actualCredential.scope.date) {

	}
	secret := globalActiveCred.SecretKey
	if globalSiteReplicationSys.isEnabled() && cred.AccessKey != siteReplicatorSvcAcc {
		nsecret, err := getTokenSigningKey()
		if err != nil {
			return nil, toAPIErrorCode(r.Context(), err)
		}
		// sign root's temporary accounts also with site replicator creds
		if cred.ParentUser != globalActiveCred.AccessKey || cred.IsTemp() {
			secret = nsecret
		}
	}
	if cred.IsServiceAccount() {