1 files changed, 8 insertions, 0 deletions
diff --git a/cryptography/primitives/block/base.py b/cryptography/primitives/block/base.py
new file mode 100644
index 00000000..c2cc4327
--- /dev/null
+++ b/cryptography/primitives/block/base.py
@@ -0,0 +1,8 @@
+class BlockCipher(object):
+    def __init__(self, cipher, mode):
+        super(BlockCipher, self).__init__()
+        self.cipher = cipher
+        self.mode = mode
+
+    def encrypt(self, plaintext):
+        raise NotImplementedError