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F-2985 - https://fenrir.wolfssl.com/finding/2985 - Add known-answer unit test for wolfTPM2_ComputeName

pull/481/head
Aidan Garske 2026-04-14 16:09:12 -07:00
parent cd63015325
commit a34459d92c
1 changed files with 58 additions and 0 deletions
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58
tests/unit_tests.c
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@ -1699,6 +1699,61 @@ static void test_TPM2_HashNvPublic(void)
#endif
}
/* Known-answer test for wolfTPM2_ComputeName.
* Reference: nameAlg(BE) || SHA256(serialized TPMT_PUBLIC) computed
* independently for an ECC P-256 key with known field values. */
#if !defined(WOLFTPM2_NO_WOLFCRYPT) && defined(HAVE_ECC)
static void test_wolfTPM2_ComputeName(void)
{
int rc;
TPM2B_PUBLIC pub;
TPM2B_NAME name;
static const byte expectedName[] = {
0x00, 0x0b, 0x35, 0xc3, 0x57, 0x9d, 0xf1, 0xb5,
0x24, 0x6a, 0xb7, 0x9a, 0x0a, 0xf2, 0xd5, 0x44,
0xcb, 0x63, 0x2a, 0x80, 0xe2, 0x24, 0x1d, 0xd3,
0x84, 0x06, 0x34, 0xe4, 0x38, 0x00, 0x61, 0xc0,
0x2e, 0x6f
};
XMEMSET(&pub, 0, sizeof(pub));
pub.publicArea.type = TPM_ALG_ECC;
pub.publicArea.nameAlg = TPM_ALG_SHA256;
pub.publicArea.objectAttributes = (TPMA_OBJECT_sign | TPMA_OBJECT_decrypt |
TPMA_OBJECT_userWithAuth | TPMA_OBJECT_noDA);
pub.publicArea.authPolicy.size = 0;
pub.publicArea.parameters.eccDetail.symmetric.algorithm = TPM_ALG_NULL;
pub.publicArea.parameters.eccDetail.scheme.scheme = TPM_ALG_NULL;
pub.publicArea.parameters.eccDetail.curveID = TPM_ECC_NIST_P256;
pub.publicArea.parameters.eccDetail.kdf.scheme = TPM_ALG_NULL;
pub.publicArea.unique.ecc.x.size = 32;
XMEMSET(pub.publicArea.unique.ecc.x.buffer, 0x11, 32);
pub.publicArea.unique.ecc.y.size = 32;
XMEMSET(pub.publicArea.unique.ecc.y.buffer, 0x22, 32);
XMEMSET(&name, 0, sizeof(name));
rc = wolfTPM2_ComputeName(&pub, &name);
AssertIntEQ(rc, TPM_RC_SUCCESS);
AssertIntEQ(name.size, (int)sizeof(expectedName));
AssertIntEQ(0, XMEMCMP(name.name, expectedName, sizeof(expectedName)));
/* Test NULL args */
rc = wolfTPM2_ComputeName(NULL, &name);
AssertIntEQ(rc, BAD_FUNC_ARG);
rc = wolfTPM2_ComputeName(&pub, NULL);
AssertIntEQ(rc, BAD_FUNC_ARG);
/* Test nameAlg = TPM_ALG_NULL returns success with empty name */
pub.publicArea.nameAlg = TPM_ALG_NULL;
XMEMSET(&name, 0xFF, sizeof(name));
rc = wolfTPM2_ComputeName(&pub, &name);
AssertIntEQ(rc, TPM_RC_SUCCESS);
AssertIntEQ(name.size, 0);
printf("Test TPM Wrapper:\tComputeName:\t\tPassed\n");
}
#endif
static void test_GetAlgId(void)
{
TPM_ALG_ID alg = TPM2_GetAlgId("SHA256");
@ -2465,6 +2520,9 @@ int unit_tests(int argc, char *argv[])
test_TPM2_ParamDec_AESCFB_Roundtrip();
test_TPM2_ParamEncDec_Dispatch_Roundtrip();
test_TPM2_HashNvPublic();
#if !defined(WOLFTPM2_NO_WOLFCRYPT) && defined(HAVE_ECC)
test_wolfTPM2_ComputeName();
#endif
test_GetAlgId();
test_wolfTPM2_ReadPublicKey();
test_wolfTPM2_CSR();