6743 - Assert HMAC size before comparing against fixed KAT length

2026-07-07 14:59:35 -07:00 · 2026-07-07 14:59:35 -07:00 · 3d2f217c37
parent 41ba3bb7f6
commit 3d2f217c37
1 changed files with 2 additions and 1 deletions
--- a/tests/unit_tests.c
+++ b/tests/unit_tests.c
@ -1883,7 +1883,8 @@ static void test_TPM2_CalcHmac(void)

    /* Pin the exact HMAC so the cpHash and sessionAttributes contributions
     * are verified, not just relative nonce ordering */
-    AssertIntEQ(0, XMEMCMP(hmac1.buffer, hmacExp, hmac1.size));
+    AssertIntEQ(hmac1.size, (int)sizeof(hmacExp));
+    AssertIntEQ(0, XMEMCMP(hmac1.buffer, hmacExp, sizeof(hmacExp)));

    /* Compute HMAC with (nonceB, nonceA) — reversed order */
    rc = TPM2_CalcHmac(TPM_ALG_SHA256, &auth, &hash, &nonceB, &nonceA,