diff --git a/lisa/commands.py b/lisa/commands.py
index a47f433a6..ab1ef1a91 100644
--- a/lisa/commands.py
+++ b/lisa/commands.py
@@ -4,11 +4,11 @@ from argparse import Namespace
 from typing import Dict, List, Optional, cast
 
 from lisa.common.logger import log
-from lisa.core.environment_factory import environment_factory
+from lisa.core.environmentFactory import EnvironmentFactory
 from lisa.core.package import import_module
-from lisa.core.platform_factory import platform_factory
+from lisa.core.platformFactory import PlatformFactory
 from lisa.core.runtimeObject import RuntimeObject
-from lisa.core.test_factory import test_factory
+from lisa.core.testFactory import TestFactory
 from lisa.parameter_parser.parser import parse
 from lisa.test_runner.lisarunner import LISARunner
 from lisa.util import constants
@@ -38,12 +38,13 @@ def _initialize(args: Namespace) -> RuntimeObject:
 
     # initialize environment
     environments_config = config.getEnvironment()
+    environment_factory = EnvironmentFactory()
     environment_factory.loadEnvironments(environments_config)
-    runtime_object.environment_factory = environment_factory
 
     # initialize platform
     platform_config = config.getPlatform()
-    runtime_object.platform = platform_factory.initializePlatform(platform_config)
+    factory = PlatformFactory()
+    runtime_object.platform = factory.initializePlatform(platform_config)
 
     runtime_object.validate()
 
@@ -54,10 +55,8 @@ def run(args: Namespace) -> None:
     runtime_object = _initialize(args)
 
     platform = runtime_object.platform
-    environment_factory = runtime_object.environment_factory
 
     runner = LISARunner()
-    runner.config(constants.CONFIG_ENVIRONMENT_FACTORY, environment_factory)
     runner.config(constants.CONFIG_PLATFORM, platform)
     awaitable = runner.start()
     asyncio.run(awaitable)
@@ -73,7 +72,8 @@ def list_start(args: Namespace) -> None:
     listAll = cast(Optional[bool], args.listAll)
     if args.type == "case":
         if listAll is True:
-            for metadata in test_factory.cases.values():
+            factory = TestFactory()
+            for metadata in factory.cases.values():
                 log.info(
                     "case: %s, suite: %s, area: %s, "
                     + "category: %s, tags: %s, priority: %s",
diff --git a/lisa/core/decorator/caseMetadata.py b/lisa/core/decorator/caseMetadata.py
index 431be4058..04e6058c4 100644
--- a/lisa/core/decorator/caseMetadata.py
+++ b/lisa/core/decorator/caseMetadata.py
@@ -2,7 +2,7 @@ from timeit import default_timer as timer
 from typing import Callable, Optional
 
 from lisa.common.logger import log
-from lisa.core.test_factory import test_factory
+from lisa.core.testFactory import TestFactory
 
 
 class CaseMetadata(object):
@@ -10,7 +10,8 @@ class CaseMetadata(object):
         self.priority = priority
 
     def __call__(self, func: Callable[..., None]) -> Callable[..., None]:
-        test_factory.addTestMethod(func, self.priority)
+        factory = TestFactory()
+        factory.addTestMethod(func, self.priority)
 
         def wrapper(*args: object) -> None:
             log.info("case '%s' started", func.__name__)
diff --git a/lisa/core/decorator/suiteMetadata.py b/lisa/core/decorator/suiteMetadata.py
index 0d99aee95..dd7ac0823 100644
--- a/lisa/core/decorator/suiteMetadata.py
+++ b/lisa/core/decorator/suiteMetadata.py
@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from typing import TYPE_CHECKING, Callable, List, Optional, Type
 
-from lisa.core.test_factory import test_factory
+from lisa.core.testFactory import TestFactory
 from lisa.core.testSuite import TestSuite
 
 if TYPE_CHECKING:
@@ -19,9 +19,8 @@ class SuiteMetadata:
         self.name = name
 
     def __call__(self, test_class: Type[TestSuite]) -> Callable[..., object]:
-        test_factory.addTestClass(
-            test_class, self.area, self.category, self.tags, self.name
-        )
+        factory = TestFactory()
+        factory.addTestClass(test_class, self.area, self.category, self.tags, self.name)
 
         def wrapper(
             test_class: Type[TestSuite], environment: Environment, cases: List[str]
diff --git a/lisa/core/environment_factory.py b/lisa/core/environmentFactory.py
similarity index 87%
rename from lisa/core/environment_factory.py
rename to lisa/core/environmentFactory.py
index 73a9b1f77..fc165ad06 100644
--- a/lisa/core/environment_factory.py
+++ b/lisa/core/environmentFactory.py
@@ -1,13 +1,16 @@
 from typing import Dict, List, Optional, cast
 
+from singleton_decorator import singleton
+
 from lisa.util import constants
 
 from .environment import Environment
 
-default_no_name = "_no_name_default"
 
+@singleton
+class EnvironmentFactory:
+    default_no_name = "_no_name_default"
 
-class EnvironmentsFactory:
     def __init__(self) -> None:
         self.environments: Dict[str, Environment] = dict()
         self.maxConcurrency = 1
@@ -29,13 +32,13 @@ class EnvironmentsFactory:
             if environment.name is None:
                 if without_name is True:
                     raise Exception("at least two environments has no name")
-                environment.name = default_no_name
+                environment.name = self.default_no_name
                 without_name = True
             self.environments[environment.name] = environment
 
     def getEnvironment(self, name: Optional[str] = None) -> Environment:
         if name is None:
-            key = default_no_name
+            key = self.default_no_name
         else:
             key = name.lower()
         environmet = self.environments.get(key)
@@ -43,6 +46,3 @@ class EnvironmentsFactory:
             raise Exception("not found environment '%s'", name)
 
         return environmet
-
-
-environment_factory = EnvironmentsFactory()
diff --git a/lisa/core/excutable_base.py b/lisa/core/excutableBase.py
similarity index 100%
rename from lisa/core/excutable_base.py
rename to lisa/core/excutableBase.py
diff --git a/lisa/core/platform_factory.py b/lisa/core/platformFactory.py
similarity index 97%
rename from lisa/core/platform_factory.py
rename to lisa/core/platformFactory.py
index 7b5d928cc..8c0d91c8b 100644
--- a/lisa/core/platform_factory.py
+++ b/lisa/core/platformFactory.py
@@ -1,11 +1,14 @@
 from typing import Dict, List, Optional, Type, cast
 
+from singleton_decorator import singleton
+
 from lisa.common.logger import log
 from lisa.util import constants
 
 from .platform import Platform
 
 
+@singleton
 class PlatformFactory:
     def __init__(self) -> None:
         self.platforms: Dict[str, Platform] = dict()
@@ -46,6 +49,3 @@ class PlatformFactory:
     def _buildFactory(self) -> None:
         for sub_class in Platform.__subclasses__():
             self.registerPlatform(sub_class)
-
-
-platform_factory = PlatformFactory()
diff --git a/lisa/core/runtimeObject.py b/lisa/core/runtimeObject.py
index 815d67414..2339409e0 100644
--- a/lisa/core/runtimeObject.py
+++ b/lisa/core/runtimeObject.py
@@ -1,7 +1,7 @@
 from typing import Optional, cast
 
 from lisa.common.logger import log
-from lisa.core.environment_factory import EnvironmentsFactory, environment_factory
+from lisa.core.environmentFactory import EnvironmentFactory
 from lisa.core.platform import Platform
 from lisa.parameter_parser.config import Config
 from lisa.sut_orchestrator.ready import ReadyPlatform
@@ -12,7 +12,6 @@ class RuntimeObject:
     def __init__(self, config: Config):
         # global config
         self.config: Config = config
-        self.environment_factory: Optional[EnvironmentsFactory] = None
         self.platform: Optional[Platform] = None
 
     # do some cross object validation
@@ -23,7 +22,8 @@ class RuntimeObject:
             warn_as_error = cast(
                 Optional[bool], environment_config.get(constants.WARN_AS_ERROR)
             )
-        enviornments = environment_factory.environments
+        factory = EnvironmentFactory()
+        enviornments = factory.environments
         for environment in enviornments.values():
             if environment.spec is not None and isinstance(
                 self.platform, ReadyPlatform
diff --git a/lisa/core/test_factory.py b/lisa/core/testFactory.py
similarity index 98%
rename from lisa/core/test_factory.py
rename to lisa/core/testFactory.py
index 8d8ce23f0..fa0df01b2 100644
--- a/lisa/core/test_factory.py
+++ b/lisa/core/testFactory.py
@@ -1,5 +1,7 @@
 from typing import Callable, Dict, List, Optional, Type
 
+from singleton_decorator import singleton
+
 from lisa.common.logger import log
 from lisa.core.testSuite import TestSuite
 
@@ -48,6 +50,7 @@ class TestSuiteMetadata:
             )
 
 
+@singleton
 class TestFactory:
     def __init__(self) -> None:
         self.suites: Dict[str, TestSuiteMetadata] = dict()
@@ -109,6 +112,3 @@ class TestFactory:
     ) -> None:
         test_suite.addCase(test_case)
         test_case.suite = test_suite
-
-
-test_factory = TestFactory()
diff --git a/lisa/test_runner/lisarunner.py b/lisa/test_runner/lisarunner.py
index 1f2121a31..455035c3b 100644
--- a/lisa/test_runner/lisarunner.py
+++ b/lisa/test_runner/lisarunner.py
@@ -2,9 +2,9 @@ from typing import cast
 
 from lisa.common.logger import log
 from lisa.core.action import ActionStatus
-from lisa.core.environment_factory import EnvironmentsFactory
+from lisa.core.environmentFactory import EnvironmentFactory
 from lisa.core.platform import Platform
-from lisa.core.test_factory import test_factory
+from lisa.core.testFactory import TestFactory
 from lisa.core.testRunner import TestRunner
 from lisa.core.testSuite import TestSuite
 from lisa.util import constants
@@ -19,20 +19,19 @@ class LISARunner(TestRunner):
         return "LISAv2"
 
     def config(self, key: str, value: object) -> None:
-        if key == constants.CONFIG_ENVIRONMENT_FACTORY:
-            self.environmentsFactory: EnvironmentsFactory = cast(
-                EnvironmentsFactory, value
-            )
-        elif key == constants.CONFIG_PLATFORM:
+        if key == constants.CONFIG_PLATFORM:
             self.platform: Platform = cast(Platform, value)
 
     async def start(self) -> None:
         await super().start()
         self.setStatus(ActionStatus.RUNNING)
+        test_factory = TestFactory()
         suites = test_factory.suites
+
+        environment_factory = EnvironmentFactory()
         # request environment
         log.info("platform %s environment requesting", self.platform.platformType())
-        environment = self.environmentsFactory.getEnvironment()
+        environment = environment_factory.getEnvironment()
         log.info("platform %s environment requested", self.platform.platformType())
 
         for suite in suites.values():
diff --git a/lisa/testcase_selector/tests_loader.py b/lisa/testcase_selector/testcaseLoader.py
similarity index 100%
rename from lisa/testcase_selector/tests_loader.py
rename to lisa/testcase_selector/testcaseLoader.py
diff --git a/poetry.lock b/poetry.lock
index dfd8e1730..5c889d7e0 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -20,6 +20,21 @@ dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.int
 docs = ["sphinx", "zope.interface"]
 tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
 
+[[package]]
+category = "main"
+description = "Modern password hashing for your software and your servers"
+name = "bcrypt"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "3.1.7"
+
+[package.dependencies]
+cffi = ">=1.1"
+six = ">=1.4.1"
+
+[package.extras]
+tests = ["pytest (>=3.2.1,<3.3.0 || >3.3.0)"]
+
 [[package]]
 category = "dev"
 description = "The uncompromising code formatter."
@@ -40,6 +55,17 @@ typed-ast = ">=1.4.0"
 [package.extras]
 d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
 
+[[package]]
+category = "main"
+description = "Foreign Function Interface for Python calling C code."
+name = "cffi"
+optional = false
+python-versions = "*"
+version = "1.14.1"
+
+[package.dependencies]
+pycparser = "*"
+
 [[package]]
 category = "dev"
 description = "Composable command line interface toolkit"
@@ -48,6 +74,26 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 version = "7.1.2"
 
+[[package]]
+category = "main"
+description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
+name = "cryptography"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+version = "3.0"
+
+[package.dependencies]
+cffi = ">=1.8,<1.11.3 || >1.11.3"
+six = ">=1.4.1"
+
+[package.extras]
+docs = ["sphinx (>=1.6.5,<1.8.0 || >1.8.0,<3.1.0 || >3.1.0,<3.1.1 || >3.1.1)", "sphinx-rtd-theme"]
+docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
+idna = ["idna (>=2.1)"]
+pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
+ssh = ["bcrypt (>=3.1.5)"]
+test = ["pytest (>=3.6.0,<3.9.0 || >3.9.0,<3.9.1 || >3.9.1,<3.9.2 || >3.9.2)", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,<3.79.2 || >3.79.2)"]
+
 [[package]]
 category = "main"
 description = "Decorators for Humans"
@@ -173,6 +219,25 @@ optional = false
 python-versions = "*"
 version = "0.4.3"
 
+[[package]]
+category = "main"
+description = "SSH2 protocol library"
+name = "paramiko"
+optional = false
+python-versions = "*"
+version = "2.7.1"
+
+[package.dependencies]
+bcrypt = ">=3.1.3"
+cryptography = ">=2.5"
+pynacl = ">=1.0.1"
+
+[package.extras]
+all = ["pyasn1 (>=0.1.7)", "pynacl (>=1.0.1)", "bcrypt (>=3.1.3)", "invoke (>=1.3)", "gssapi (>=1.4.1)", "pywin32 (>=2.1.8)"]
+ed25519 = ["pynacl (>=1.0.1)", "bcrypt (>=3.1.3)"]
+gssapi = ["pyasn1 (>=0.1.7)", "gssapi (>=1.4.1)", "pywin32 (>=2.1.8)"]
+invoke = ["invoke (>=1.3)"]
+
 [[package]]
 category = "dev"
 description = "A Python Parser"
@@ -230,6 +295,14 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 version = "2.6.0"
 
+[[package]]
+category = "main"
+description = "C parser in Python"
+name = "pycparser"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.20"
+
 [[package]]
 category = "dev"
 description = "passive checker of Python programs"
@@ -281,6 +354,22 @@ python-language-server = "*"
 [package.extras]
 test = ["tox", "versioneer", "pytest", "pytest-cov", "coverage"]
 
+[[package]]
+category = "main"
+description = "Python binding to the Networking and Cryptography (NaCl) library"
+name = "pynacl"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.4.0"
+
+[package.dependencies]
+cffi = ">=1.4.1"
+six = "*"
+
+[package.extras]
+docs = ["sphinx (>=1.6.5)", "sphinx-rtd-theme"]
+tests = ["pytest (>=3.2.1,<3.3.0 || >3.3.0)", "hypothesis (>=3.27.0)"]
+
 [[package]]
 category = "dev"
 description = "JSON RPC 2.0 server library"
@@ -361,6 +450,22 @@ version = "0.17.0"
 [package.extras]
 dev = ["pytest"]
 
+[[package]]
+category = "main"
+description = "A testable singleton decorator"
+name = "singleton-decorator"
+optional = false
+python-versions = "*"
+version = "1.0.0"
+
+[[package]]
+category = "main"
+description = "Python 2 and 3 compatibility utilities"
+name = "six"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "1.15.0"
+
 [[package]]
 category = "dev"
 description = "A collection of helpers and mock objects for unit tests and doc tests."
@@ -408,7 +513,7 @@ python-versions = "*"
 version = "1.35"
 
 [metadata]
-content-hash = "4d0216f755bae5066ebc7fb06448f659be9e75b1f73a943926bba6e2d7f332ce"
+content-hash = "59cde0dfa40d3e9d1494ed53142ff22b698a890bb024defd051d4fd1145caa0e"
 lock-version = "1.0"
 python-versions = "^3.8"
 
@@ -421,14 +526,85 @@ attrs = [
     {file = "attrs-19.3.0-py2.py3-none-any.whl", hash = "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c"},
     {file = "attrs-19.3.0.tar.gz", hash = "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"},
 ]
+bcrypt = [
+    {file = "bcrypt-3.1.7-cp27-cp27m-macosx_10_6_intel.whl", hash = "sha256:d7bdc26475679dd073ba0ed2766445bb5b20ca4793ca0db32b399dccc6bc84b7"},
+    {file = "bcrypt-3.1.7-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:69361315039878c0680be456640f8705d76cb4a3a3fe1e057e0f261b74be4b31"},
+    {file = "bcrypt-3.1.7-cp27-cp27m-win32.whl", hash = "sha256:5432dd7b34107ae8ed6c10a71b4397f1c853bd39a4d6ffa7e35f40584cffd161"},
+    {file = "bcrypt-3.1.7-cp27-cp27m-win_amd64.whl", hash = "sha256:9fe92406c857409b70a38729dbdf6578caf9228de0aef5bc44f859ffe971a39e"},
+    {file = "bcrypt-3.1.7-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:763669a367869786bb4c8fcf731f4175775a5b43f070f50f46f0b59da45375d0"},
+    {file = "bcrypt-3.1.7-cp34-abi3-macosx_10_6_intel.whl", hash = "sha256:a190f2a5dbbdbff4b74e3103cef44344bc30e61255beb27310e2aec407766052"},
+    {file = "bcrypt-3.1.7-cp34-abi3-manylinux1_x86_64.whl", hash = "sha256:c9457fa5c121e94a58d6505cadca8bed1c64444b83b3204928a866ca2e599105"},
+    {file = "bcrypt-3.1.7-cp34-cp34m-win32.whl", hash = "sha256:8b10acde4e1919d6015e1df86d4c217d3b5b01bb7744c36113ea43d529e1c3de"},
+    {file = "bcrypt-3.1.7-cp34-cp34m-win_amd64.whl", hash = "sha256:cb93f6b2ab0f6853550b74e051d297c27a638719753eb9ff66d1e4072be67133"},
+    {file = "bcrypt-3.1.7-cp35-cp35m-win32.whl", hash = "sha256:6fe49a60b25b584e2f4ef175b29d3a83ba63b3a4df1b4c0605b826668d1b6be5"},
+    {file = "bcrypt-3.1.7-cp35-cp35m-win_amd64.whl", hash = "sha256:a595c12c618119255c90deb4b046e1ca3bcfad64667c43d1166f2b04bc72db09"},
+    {file = "bcrypt-3.1.7-cp36-cp36m-win32.whl", hash = "sha256:74a015102e877d0ccd02cdeaa18b32aa7273746914a6c5d0456dd442cb65b99c"},
+    {file = "bcrypt-3.1.7-cp36-cp36m-win_amd64.whl", hash = "sha256:0258f143f3de96b7c14f762c770f5fc56ccd72f8a1857a451c1cd9a655d9ac89"},
+    {file = "bcrypt-3.1.7-cp37-cp37m-win32.whl", hash = "sha256:19a4b72a6ae5bb467fea018b825f0a7d917789bcfe893e53f15c92805d187294"},
+    {file = "bcrypt-3.1.7-cp37-cp37m-win_amd64.whl", hash = "sha256:ff032765bb8716d9387fd5376d987a937254b0619eff0972779515b5c98820bc"},
+    {file = "bcrypt-3.1.7-cp38-cp38-win32.whl", hash = "sha256:ce4e4f0deb51d38b1611a27f330426154f2980e66582dc5f438aad38b5f24fc1"},
+    {file = "bcrypt-3.1.7-cp38-cp38-win_amd64.whl", hash = "sha256:6305557019906466fc42dbc53b46da004e72fd7a551c044a827e572c82191752"},
+    {file = "bcrypt-3.1.7.tar.gz", hash = "sha256:0b0069c752ec14172c5f78208f1863d7ad6755a6fae6fe76ec2c80d13be41e42"},
+]
 black = [
     {file = "black-19.10b0-py36-none-any.whl", hash = "sha256:1b30e59be925fafc1ee4565e5e08abef6b03fe455102883820fe5ee2e4734e0b"},
     {file = "black-19.10b0.tar.gz", hash = "sha256:c2edb73a08e9e0e6f65a0e6af18b059b8b1cdd5bef997d7a0b181df93dc81539"},
 ]
+cffi = [
+    {file = "cffi-1.14.1-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:66dd45eb9530e3dde8f7c009f84568bc7cac489b93d04ac86e3111fb46e470c2"},
+    {file = "cffi-1.14.1-cp27-cp27m-manylinux1_i686.whl", hash = "sha256:4f53e4128c81ca3212ff4cf097c797ab44646a40b42ec02a891155cd7a2ba4d8"},
+    {file = "cffi-1.14.1-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:833401b15de1bb92791d7b6fb353d4af60dc688eaa521bd97203dcd2d124a7c1"},
+    {file = "cffi-1.14.1-cp27-cp27m-win32.whl", hash = "sha256:26f33e8f6a70c255767e3c3f957ccafc7f1f706b966e110b855bfe944511f1f9"},
+    {file = "cffi-1.14.1-cp27-cp27m-win_amd64.whl", hash = "sha256:b87dfa9f10a470eee7f24234a37d1d5f51e5f5fa9eeffda7c282e2b8f5162eb1"},
+    {file = "cffi-1.14.1-cp27-cp27mu-manylinux1_i686.whl", hash = "sha256:effd2ba52cee4ceff1a77f20d2a9f9bf8d50353c854a282b8760ac15b9833168"},
+    {file = "cffi-1.14.1-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:bac0d6f7728a9cc3c1e06d4fcbac12aaa70e9379b3025b27ec1226f0e2d404cf"},
+    {file = "cffi-1.14.1-cp35-cp35m-macosx_10_9_x86_64.whl", hash = "sha256:d6033b4ffa34ef70f0b8086fd4c3df4bf801fee485a8a7d4519399818351aa8e"},
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 ]
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+    {file = "cryptography-3.0-cp27-cp27mu-manylinux2010_x86_64.whl", hash = "sha256:bec7568c6970b865f2bcebbe84d547c52bb2abadf74cefce396ba07571109c67"},
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+    {file = "cryptography-3.0-cp35-abi3-manylinux1_x86_64.whl", hash = "sha256:a09fd9c1cca9a46b6ad4bea0a1f86ab1de3c0c932364dbcf9a6c2a5eeb44fa77"},
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+    {file = "cryptography-3.0-cp35-cp35m-win32.whl", hash = "sha256:9367d00e14dee8d02134c6c9524bb4bd39d4c162456343d07191e2a0b5ec8b3b"},
+    {file = "cryptography-3.0-cp35-cp35m-win_amd64.whl", hash = "sha256:384d7c681b1ab904fff3400a6909261cae1d0939cc483a68bdedab282fb89a07"},
+    {file = "cryptography-3.0-cp36-cp36m-win32.whl", hash = "sha256:4d355f2aee4a29063c10164b032d9fa8a82e2c30768737a2fd56d256146ad559"},
+    {file = "cryptography-3.0-cp36-cp36m-win_amd64.whl", hash = "sha256:45741f5499150593178fc98d2c1a9c6722df88b99c821ad6ae298eff0ba1ae71"},
+    {file = "cryptography-3.0-cp37-cp37m-win32.whl", hash = "sha256:8ecef21ac982aa78309bb6f092d1677812927e8b5ef204a10c326fc29f1367e2"},
+    {file = "cryptography-3.0-cp37-cp37m-win_amd64.whl", hash = "sha256:4b9303507254ccb1181d1803a2080a798910ba89b1a3c9f53639885c90f7a756"},
+    {file = "cryptography-3.0-cp38-cp38-win32.whl", hash = "sha256:8713ddb888119b0d2a1462357d5946b8911be01ddbf31451e1d07eaa5077a261"},
+    {file = "cryptography-3.0-cp38-cp38-win_amd64.whl", hash = "sha256:bea0b0468f89cdea625bb3f692cd7a4222d80a6bdafd6fb923963f2b9da0e15f"},
+    {file = "cryptography-3.0.tar.gz", hash = "sha256:8e924dbc025206e97756e8903039662aa58aa9ba357d8e1d8fc29e3092322053"},
+]
 decorator = [
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     {file = "decorator-4.4.2.tar.gz", hash = "sha256:e3a62f0520172440ca0dcc823749319382e377f37f140a0b99ef45fecb84bfe7"},
@@ -480,6 +656,10 @@ mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
     {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
 ]
+paramiko = [
+    {file = "paramiko-2.7.1-py2.py3-none-any.whl", hash = "sha256:9c980875fa4d2cb751604664e9a2d0f69096643f5be4db1b99599fe114a97b2f"},
+    {file = "paramiko-2.7.1.tar.gz", hash = "sha256:920492895db8013f6cc0179293147f830b8c7b21fdfc839b6bad760c27459d9f"},
+]
 parso = [
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     {file = "parso-0.7.1.tar.gz", hash = "sha256:caba44724b994a8a5e086460bb212abc5a8bc46951bf4a9a1210745953622eb9"},
@@ -513,6 +693,10 @@ pycodestyle = [
     {file = "pycodestyle-2.6.0-py2.py3-none-any.whl", hash = "sha256:2295e7b2f6b5bd100585ebcb1f616591b652db8a741695b3d8f5d28bdc934367"},
     {file = "pycodestyle-2.6.0.tar.gz", hash = "sha256:c58a7d2815e0e8d7972bf1803331fb0152f867bd89adf8a01dfd55085434192e"},
 ]
+pycparser = [
+    {file = "pycparser-2.20-py2.py3-none-any.whl", hash = "sha256:7582ad22678f0fcd81102833f60ef8d0e57288b6b5fb00323d101be910e35705"},
+    {file = "pycparser-2.20.tar.gz", hash = "sha256:2d475327684562c3a96cc71adf7dc8c4f0565175cf86b6d7a404ff4c771f15f0"},
+]
 pyflakes = [
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     {file = "pyflakes-2.2.0.tar.gz", hash = "sha256:35b2d75ee967ea93b55750aa9edbbf72813e06a66ba54438df2cfac9e3c27fc8"},
@@ -528,6 +712,24 @@ pyls-isort = [
 pyls-mypy = [
     {file = "pyls-mypy-0.1.8.tar.gz", hash = "sha256:3fd83028961f0ca9eb3048b7a01cf42a9e3d46d8ea4935c1424c33da22c3eb03"},
 ]
+pynacl = [
+    {file = "PyNaCl-1.4.0-cp27-cp27m-macosx_10_10_x86_64.whl", hash = "sha256:ea6841bc3a76fa4942ce00f3bda7d436fda21e2d91602b9e21b7ca9ecab8f3ff"},
+    {file = "PyNaCl-1.4.0-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:d452a6746f0a7e11121e64625109bc4468fc3100452817001dbe018bb8b08514"},
+    {file = "PyNaCl-1.4.0-cp27-cp27m-win32.whl", hash = "sha256:2fe0fc5a2480361dcaf4e6e7cea00e078fcda07ba45f811b167e3f99e8cff574"},
+    {file = "PyNaCl-1.4.0-cp27-cp27m-win_amd64.whl", hash = "sha256:f8851ab9041756003119368c1e6cd0b9c631f46d686b3904b18c0139f4419f80"},
+    {file = "PyNaCl-1.4.0-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:7757ae33dae81c300487591c68790dfb5145c7d03324000433d9a2c141f82af7"},
+    {file = "PyNaCl-1.4.0-cp35-abi3-macosx_10_10_x86_64.whl", hash = "sha256:757250ddb3bff1eecd7e41e65f7f833a8405fede0194319f87899690624f2122"},
+    {file = "PyNaCl-1.4.0-cp35-abi3-manylinux1_x86_64.whl", hash = "sha256:30f9b96db44e09b3304f9ea95079b1b7316b2b4f3744fe3aaecccd95d547063d"},
+    {file = "PyNaCl-1.4.0-cp35-cp35m-win32.whl", hash = "sha256:06cbb4d9b2c4bd3c8dc0d267416aaed79906e7b33f114ddbf0911969794b1cc4"},
+    {file = "PyNaCl-1.4.0-cp35-cp35m-win_amd64.whl", hash = "sha256:511d269ee845037b95c9781aa702f90ccc36036f95d0f31373a6a79bd8242e25"},
+    {file = "PyNaCl-1.4.0-cp36-cp36m-win32.whl", hash = "sha256:11335f09060af52c97137d4ac54285bcb7df0cef29014a1a4efe64ac065434c4"},
+    {file = "PyNaCl-1.4.0-cp36-cp36m-win_amd64.whl", hash = "sha256:cd401ccbc2a249a47a3a1724c2918fcd04be1f7b54eb2a5a71ff915db0ac51c6"},
+    {file = "PyNaCl-1.4.0-cp37-cp37m-win32.whl", hash = "sha256:8122ba5f2a2169ca5da936b2e5a511740ffb73979381b4229d9188f6dcb22f1f"},
+    {file = "PyNaCl-1.4.0-cp37-cp37m-win_amd64.whl", hash = "sha256:537a7ccbea22905a0ab36ea58577b39d1fa9b1884869d173b5cf111f006f689f"},
+    {file = "PyNaCl-1.4.0-cp38-cp38-win32.whl", hash = "sha256:9c4a7ea4fb81536c1b1f5cc44d54a296f96ae78c1ebd2311bd0b60be45a48d96"},
+    {file = "PyNaCl-1.4.0-cp38-cp38-win_amd64.whl", hash = "sha256:7c6092102219f59ff29788860ccb021e80fffd953920c4a8653889c029b2d420"},
+    {file = "PyNaCl-1.4.0.tar.gz", hash = "sha256:54e9a2c849c742006516ad56a88f5c74bf2ce92c9f67435187c3c5953b346505"},
+]
 python-jsonrpc-server = [
     {file = "python-jsonrpc-server-0.3.4.tar.gz", hash = "sha256:c73bf5495c9dd4d2f902755bedeb6da5afe778e0beee82f0e195c4655352fe37"},
     {file = "python_jsonrpc_server-0.3.4-py3-none-any.whl", hash = "sha256:1f85f75f37f923149cc0aa078474b6df55b708e82ed819ca8846a65d7d0ada7f"},
@@ -579,6 +781,13 @@ retry = [
 rope = [
     {file = "rope-0.17.0.tar.gz", hash = "sha256:658ad6705f43dcf3d6df379da9486529cf30e02d9ea14c5682aa80eb33b649e1"},
 ]
+singleton-decorator = [
+    {file = "singleton-decorator-1.0.0.tar.gz", hash = "sha256:1a90ad8a8a738be591c9c167fdd677c5d4a43d1bc6b1c128227be1c5e03bee07"},
+]
+six = [
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
 testfixtures = [
     {file = "testfixtures-6.14.1-py2.py3-none-any.whl", hash = "sha256:30566e24a1b34e4d3f8c13abf62557d01eeb4480bcb8f1745467bfb0d415a7d9"},
     {file = "testfixtures-6.14.1.tar.gz", hash = "sha256:58d2b3146d93bc5ddb0cd24e0ccacb13e29bdb61e5c81235c58f7b8ee4470366"},
diff --git a/pyproject.toml b/pyproject.toml
index ccaa66ec7..e8cb0a9f0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,6 +11,8 @@ psutil = "^5.7.2"
 pyyaml = "^5.3.1"
 regex = "^2020.7.14"
 retry = "^0.9.2"
+paramiko = "^2.7.1"
+singleton-decorator = "^1.0.0"
 
 [tool.poetry.dev-dependencies]
 black = "^19.10b0"