added ccakem performance test

perf_tests/__main__.py

@@ -1,3 +1,5 @@
 from perf_tests.test_encryption import runner as encryption_test_runner
+from perf_tests.test_ccakem import runner as ccakem_test_runner
 
 encryption_test_runner()
+ccakem_test_runner()

perf_tests/test_ccakem.py

@@ -0,0 +1,39 @@
+from time import time
+from kyber.ccakem import ccakem_generate_keys, ccakem_encrypt, ccakem_decrypt
+
+def run_test() -> tuple[float, float, float]:
+    t0 = time()
+
+    private_key, public_key = ccakem_generate_keys()
+
+    t1 = time()
+
+    ciphertext, shared_secret1 = ccakem_encrypt(public_key)
+
+    t2 = time()
+
+    shared_secret2 = ccakem_decrypt(ciphertext, private_key)
+
+    t3 = time()
+
+    assert shared_secret1 == shared_secret2
+
+    return (t1-t0, t2-t1, t3-t2)
+
+def runner():
+    print("Starting ccakem performance test (about 2 mins)")
+
+    test_iters = 250
+    averages = [0, 0, 0]
+
+    for _ in range(test_iters):
+        durations = run_test()
+        averages = [averages[i]+durations[i] for i in range(3)]
+
+    print("Results (averages):")
+    print(f"Keypair generation: {averages[0]/test_iters:.5f} sec")
+    print(f"Encryption: {averages[1]/test_iters:.5f} sec")
+    print(f"Decryption: {averages[2]/test_iters:.5f} sec")
+
+if __name__ == "__main__":
+    runner()