Create security.py

Author: KOSASIH

src/security.py

@@ -0,0 +1,18 @@
+from cryptography.hazmat.primitives.asymmetric import ec
+from cryptography.hazmat.primitives import serialization
+
+class Security:
+    def __init__(self):
+        self.private_key = ec.generate_private_key(ec.SECP256R1())
+        self.public_key = self.private_key.public_key()
+
+    def sign_transaction(self, transaction):
+        signature = self.private_key.sign(transaction.encode())
+        return signature
+
+    def verify_signature(self, transaction, signature):
+        try:
+            self.public_key.verify(signature, transaction.encode())
+            return True
+        except Exception:
+            return False