diff --git a/squeaknode/core/crypto.py b/squeaknode/core/crypto.py
index 50fc50cd..c2573b01 100644
--- a/squeaknode/core/crypto.py
+++ b/squeaknode/core/crypto.py
@@ -22,13 +22,6 @@
 import random
 
 
-DATA_KEY_LENGTH = 32
-VERSION_NONCE_LENGTH = 8
-
-HASH_LENGTH = 32
-EMPTY_HASH = b'\x00' * HASH_LENGTH
-
-
 def generate_version_nonce() -> int:
     return random.SystemRandom().getrandbits(64)
 
diff --git a/tests/core/test_crypto.py b/tests/core/test_crypto.py
new file mode 100644
index 00000000..200240c7
--- /dev/null
+++ b/tests/core/test_crypto.py
@@ -0,0 +1,35 @@
+# MIT License
+#
+# Copyright (c) 2020 Jonathan Zernik
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+from squeaknode.core.crypto import generate_ping_nonce
+from squeaknode.core.crypto import generate_version_nonce
+
+
+def test_gen_version_nonce():
+    generated_nonce = generate_version_nonce()
+
+    assert type(generated_nonce) is int
+
+
+def test_gen_ping_nonce():
+    generated_nonce = generate_ping_nonce()
+
+    assert type(generated_nonce) is int