Create quantum_crypto.py

src/security/quantum_crypto.py

@@ -0,0 +1,40 @@
+import numpy as np
+from qiskit import QuantumCircuit, execute, Aer
+
+class QuantumCrypto:
+    def __init__(self, key_size=256):
+        self.key_size = key_size
+        self.backend = Aer.get_backend('qasm_simulator')
+
+    def generate_key(self):
+        qc = QuantumCircuit(self.key_size)
+        for i in range(self.key_size):
+            qc.h(i)
+        job = execute(qc, self.backend, shots=1)
+        result = job.result()
+        counts = result.get_counts(qc)
+        key = list(counts.keys())[0]
+        return key
+
+    def encrypt(self, message, key):
+        encrypted_message = ""
+        for i in range(len(message)):
+            encrypted_message += chr(ord(message[i]) ^ ord(key[i % self.key_size]))
+        return encrypted_message
+
+    def decrypt(self, encrypted_message, key):
+        decrypted_message = ""
+        for i in range(len(encrypted_message)):
+            decrypted_message += chr(ord(encrypted_message[i]) ^ ord(key[i % self.key_size]))
+        return decrypted_message
+
+# Example usage
+if __name__ == "__main__":
+    qc = QuantumCrypto(key_size=256)
+    key = qc.generate_key()
+    message = "Hello, Quantum Crypto!"
+    encrypted_message = qc.encrypt(message, key)
+    decrypted_message = qc.decrypt(encrypted_message, key)
+    print(f"Original Message: {message}")
+    print(f"Encrypted Message: {encrypted_message}")
+    print(f"Decrypted Message: {decrypted_message}")