Create homomorphic_encryption.py

QuantumNexusProtocol/src/cryptography/homomorphic_encryption.py

@@ -0,0 +1,23 @@
+from phe import paillier
+
+class HomomorphicEncryption:
+    def __init__(self):
+        self.public_key, self.private_key = paillier.generate_paillier_keypair()
+
+    def encrypt(self, value):
+        return self.public_key.encrypt(value)
+
+    def add_encrypted(self, encrypted_value1, encrypted_value2):
+        return encrypted_value1 + encrypted_value2
+
+    def decrypt(self, encrypted_value):
+        return self.private_key.decrypt(encrypted_value)
+
+# Example usage
+if __name__ == "__main__":
+    he = HomomorphicEncryption()
+    encrypted_value1 = he.encrypt(10)
+    encrypted_value2 = he.encrypt(20)
+    encrypted_sum = he.add_encrypted(encrypted_value1, encrypted_value2)
+    decrypted_sum = he.decrypt(encrypted_sum)
+    print(f"Decrypted Sum: {decrypted_sum}")