Create zero_knowledge_proof.py

QuantumNexusProtocol/src/cryptography/zero_knowledge_proof.py

@@ -0,0 +1,25 @@
+from hashlib import sha256
+import random
+
+class ZeroKnowledgeProof:
+    def __init__(self, secret):
+        self.secret = secret
+
+    def commit(self):
+        self.random_value = random.randint(1, 100)
+        self.commitment = sha256(f"{self.secret}{self.random_value}".encode()).hexdigest()
+        return self.commitment
+
+    def verify(self, challenge, response):
+        return sha256(f"{self.secret}{response}".encode()).hexdigest() == challenge
+
+# Example usage
+if __name__ == "__main__":
+    secret = "my_secret"
+    zk_proof = ZeroKnowledgeProof(secret)
+    commitment = zk_proof.commit()
+    print(f"Commitment: {commitment}")
+    challenge = commitment  # In a real scenario, this would be sent to the verifier
+    response = zk_proof.random_value  # The prover sends back the random value
+    is_valid = zk_proof.verify(challenge, response)
+    print(f"Verification: {is_valid}")