diff --git a/homeassistant/auth/models.py b/homeassistant/auth/models.py
index 6889d17a25f..08f2f375b41 100644
--- a/homeassistant/auth/models.py
+++ b/homeassistant/auth/models.py
@@ -1,5 +1,6 @@
 """Auth models."""
 from datetime import datetime, timedelta
+import secrets
 from typing import Dict, List, NamedTuple, Optional
 import uuid
 
@@ -9,7 +10,6 @@ from homeassistant.util import dt as dt_util
 
 from . import permissions as perm_mdl
 from .const import GROUP_ID_ADMIN
-from .util import generate_secret
 
 TOKEN_TYPE_NORMAL = "normal"
 TOKEN_TYPE_SYSTEM = "system"
@@ -96,8 +96,8 @@ class RefreshToken:
     )
     id = attr.ib(type=str, factory=lambda: uuid.uuid4().hex)
     created_at = attr.ib(type=datetime, factory=dt_util.utcnow)
-    token = attr.ib(type=str, factory=lambda: generate_secret(64))
-    jwt_key = attr.ib(type=str, factory=lambda: generate_secret(64))
+    token = attr.ib(type=str, factory=lambda: secrets.token_hex(64))
+    jwt_key = attr.ib(type=str, factory=lambda: secrets.token_hex(64))
 
     last_used_at = attr.ib(type=Optional[datetime], default=None)
     last_used_ip = attr.ib(type=Optional[str], default=None)
diff --git a/homeassistant/auth/util.py b/homeassistant/auth/util.py
deleted file mode 100644
index 83834fa7683..00000000000
--- a/homeassistant/auth/util.py
+++ /dev/null
@@ -1,13 +0,0 @@
-"""Auth utils."""
-import binascii
-import os
-
-
-def generate_secret(entropy: int = 32) -> str:
-    """Generate a secret.
-
-    Backport of secrets.token_hex from Python 3.6
-
-    Event loop friendly.
-    """
-    return binascii.hexlify(os.urandom(entropy)).decode("ascii")
diff --git a/homeassistant/components/http/auth.py b/homeassistant/components/http/auth.py
index 3866e770de0..58814b77e2d 100644
--- a/homeassistant/components/http/auth.py
+++ b/homeassistant/components/http/auth.py
@@ -1,11 +1,11 @@
 """Authentication for HTTP component."""
 import logging
+import secrets
 
 from aiohttp import hdrs
 from aiohttp.web import middleware
 import jwt
 
-from homeassistant.auth.util import generate_secret
 from homeassistant.core import callback
 from homeassistant.util import dt as dt_util
 
@@ -26,7 +26,7 @@ def async_sign_path(hass, refresh_token_id, path, expiration):
     secret = hass.data.get(DATA_SIGN_SECRET)
 
     if secret is None:
-        secret = hass.data[DATA_SIGN_SECRET] = generate_secret()
+        secret = hass.data[DATA_SIGN_SECRET] = secrets.token_hex()
 
     now = dt_util.utcnow()
     return "{}?{}={}".format(
diff --git a/homeassistant/components/mobile_app/http_api.py b/homeassistant/components/mobile_app/http_api.py
index ede18528f81..9581a374384 100644
--- a/homeassistant/components/mobile_app/http_api.py
+++ b/homeassistant/components/mobile_app/http_api.py
@@ -1,11 +1,11 @@
 """Provides an HTTP API for mobile_app."""
+import secrets
 from typing import Dict
 import uuid
 
 from aiohttp.web import Request, Response
 from nacl.secret import SecretBox
 
-from homeassistant.auth.util import generate_secret
 from homeassistant.components.http import HomeAssistantView
 from homeassistant.components.http.data_validator import RequestDataValidator
 from homeassistant.const import CONF_WEBHOOK_ID, HTTP_CREATED
@@ -34,7 +34,7 @@ class RegistrationsView(HomeAssistantView):
         """Handle the POST request for registration."""
         hass = request.app["hass"]
 
-        webhook_id = generate_secret()
+        webhook_id = secrets.token_hex()
 
         if hass.components.cloud.async_active_subscription():
             data[
@@ -46,7 +46,7 @@ class RegistrationsView(HomeAssistantView):
         data[CONF_WEBHOOK_ID] = webhook_id
 
         if data[ATTR_SUPPORTS_ENCRYPTION] and supports_encryption():
-            data[CONF_SECRET] = generate_secret(SecretBox.KEY_SIZE)
+            data[CONF_SECRET] = secrets.token_hex(SecretBox.KEY_SIZE)
 
         data[CONF_USER_ID] = request["hass_user"].id
 
diff --git a/homeassistant/components/owntracks/config_flow.py b/homeassistant/components/owntracks/config_flow.py
index 82f89de6363..0aba24217cc 100644
--- a/homeassistant/components/owntracks/config_flow.py
+++ b/homeassistant/components/owntracks/config_flow.py
@@ -1,6 +1,7 @@
 """Config flow for OwnTracks."""
+import secrets
+
 from homeassistant import config_entries
-from homeassistant.auth.util import generate_secret
 from homeassistant.const import CONF_WEBHOOK_ID
 
 from .const import DOMAIN  # noqa pylint: disable=unused-import
@@ -25,7 +26,7 @@ class OwnTracksFlow(config_entries.ConfigFlow, domain=DOMAIN):
 
         webhook_id, webhook_url, cloudhook = await self._get_webhook_id()
 
-        secret = generate_secret(16)
+        secret = secrets.token_hex(16)
 
         if supports_encryption():
             secret_desc = f"The encryption key is {secret} (on Android under preferences -> advanced)"
@@ -53,7 +54,7 @@ class OwnTracksFlow(config_entries.ConfigFlow, domain=DOMAIN):
         if self._async_current_entries():
             return self.async_abort(reason="one_instance_allowed")
         webhook_id, _webhook_url, cloudhook = await self._get_webhook_id()
-        secret = generate_secret(16)
+        secret = secrets.token_hex(16)
         return self.async_create_entry(
             title="OwnTracks",
             data={
diff --git a/homeassistant/components/rachio/__init__.py b/homeassistant/components/rachio/__init__.py
index 4d67175ecd5..1b24f4e0071 100644
--- a/homeassistant/components/rachio/__init__.py
+++ b/homeassistant/components/rachio/__init__.py
@@ -1,13 +1,13 @@
 """Integration with the Rachio Iro sprinkler system controller."""
 import asyncio
 import logging
+import secrets
 from typing import Optional
 
 from aiohttp import web
 from rachiopy import Rachio
 import voluptuous as vol
 
-from homeassistant.auth.util import generate_secret
 from homeassistant.components.http import HomeAssistantView
 from homeassistant.const import CONF_API_KEY, EVENT_HOMEASSISTANT_STOP, URL_API
 from homeassistant.helpers import config_validation as cv, discovery
@@ -115,7 +115,7 @@ def setup(hass, config) -> bool:
     # Get the URL of this server
     custom_url = config[DOMAIN].get(CONF_CUSTOM_URL)
     hass_url = hass.config.api.base_url if custom_url is None else custom_url
-    rachio.webhook_auth = generate_secret()
+    rachio.webhook_auth = secrets.token_hex()
     rachio.webhook_url = hass_url + WEBHOOK_PATH
 
     # Get the API user
diff --git a/homeassistant/components/smartthings/smartapp.py b/homeassistant/components/smartthings/smartapp.py
index 9b67df21491..74feb93eec4 100644
--- a/homeassistant/components/smartthings/smartapp.py
+++ b/homeassistant/components/smartthings/smartapp.py
@@ -2,6 +2,7 @@
 import asyncio
 import functools
 import logging
+import secrets
 from urllib.parse import urlparse
 from uuid import uuid4
 
@@ -208,7 +209,7 @@ async def setup_smartapp_endpoint(hass: HomeAssistantType):
         # Create config
         config = {
             CONF_INSTANCE_ID: str(uuid4()),
-            CONF_WEBHOOK_ID: webhook.generate_secret(),
+            CONF_WEBHOOK_ID: secrets.token_hex(),
             CONF_CLOUDHOOK_URL: None,
         }
         await store.async_save(config)
diff --git a/homeassistant/components/stream/__init__.py b/homeassistant/components/stream/__init__.py
index 2bfd37a2641..d88f90a83f8 100644
--- a/homeassistant/components/stream/__init__.py
+++ b/homeassistant/components/stream/__init__.py
@@ -1,10 +1,10 @@
 """Provide functionality to stream video source."""
 import logging
+import secrets
 import threading
 
 import voluptuous as vol
 
-from homeassistant.auth.util import generate_secret
 from homeassistant.const import CONF_FILENAME, EVENT_HOMEASSISTANT_STOP
 from homeassistant.core import callback
 from homeassistant.exceptions import HomeAssistantError
@@ -72,7 +72,7 @@ def request_stream(hass, stream_source, *, fmt="hls", keepalive=False, options=N
         stream.add_provider(fmt)
 
         if not stream.access_token:
-            stream.access_token = generate_secret()
+            stream.access_token = secrets.token_hex()
             stream.start()
         return hass.data[DOMAIN][ATTR_ENDPOINTS][fmt].format(stream.access_token)
     except Exception:
diff --git a/homeassistant/components/webhook/__init__.py b/homeassistant/components/webhook/__init__.py
index d51771d0b16..217baf42f3a 100644
--- a/homeassistant/components/webhook/__init__.py
+++ b/homeassistant/components/webhook/__init__.py
@@ -1,10 +1,10 @@
 """Webhooks for Home Assistant."""
 import logging
+import secrets
 
 from aiohttp.web import Request, Response
 import voluptuous as vol
 
-from homeassistant.auth.util import generate_secret
 from homeassistant.components import websocket_api
 from homeassistant.components.http.view import HomeAssistantView
 from homeassistant.core import callback
@@ -46,7 +46,7 @@ def async_unregister(hass, webhook_id):
 @callback
 def async_generate_id():
     """Generate a webhook_id."""
-    return generate_secret(entropy=32)
+    return secrets.token_hex(32)
 
 
 @callback
diff --git a/homeassistant/helpers/config_entry_oauth2_flow.py b/homeassistant/helpers/config_entry_oauth2_flow.py
index 4ea82f5f047..2fdfea8673f 100644
--- a/homeassistant/helpers/config_entry_oauth2_flow.py
+++ b/homeassistant/helpers/config_entry_oauth2_flow.py
@@ -8,6 +8,7 @@ This module exists of the following parts:
 from abc import ABC, ABCMeta, abstractmethod
 import asyncio
 import logging
+import secrets
 import time
 from typing import Any, Awaitable, Callable, Dict, Optional, cast
 
@@ -18,7 +19,6 @@ import voluptuous as vol
 from yarl import URL
 
 from homeassistant import config_entries
-from homeassistant.auth.util import generate_secret
 from homeassistant.components.http import HomeAssistantView
 from homeassistant.core import HomeAssistant, callback
 
@@ -441,7 +441,7 @@ def _encode_jwt(hass: HomeAssistant, data: dict) -> str:
     secret = hass.data.get(DATA_JWT_SECRET)
 
     if secret is None:
-        secret = hass.data[DATA_JWT_SECRET] = generate_secret()
+        secret = hass.data[DATA_JWT_SECRET] = secrets.token_hex()
 
     return jwt.encode(data, secret, algorithm="HS256").decode()
 
diff --git a/tests/components/smartthings/conftest.py b/tests/components/smartthings/conftest.py
index b3b172e7606..0dc71ea72b9 100644
--- a/tests/components/smartthings/conftest.py
+++ b/tests/components/smartthings/conftest.py
@@ -1,4 +1,5 @@
 """Test configuration and mocks for the SmartThings component."""
+import secrets
 from uuid import uuid4
 
 from asynctest import Mock, patch
@@ -160,7 +161,7 @@ def installed_apps_fixture(installed_app, locations, app):
 @pytest.fixture(name="config_file")
 def config_file_fixture():
     """Fixture representing the local config file contents."""
-    return {CONF_INSTANCE_ID: str(uuid4()), CONF_WEBHOOK_ID: webhook.generate_secret()}
+    return {CONF_INSTANCE_ID: str(uuid4()), CONF_WEBHOOK_ID: secrets.token_hex()}
 
 
 @pytest.fixture(name="smartthings_mock")