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tpm2: Implement TPM2B_Cmp() to compare to TPM2B's

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Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Stefan Berger 2018-06-05 20:35:28 -04:00
parent 55bcad86f9
commit 1a7902bb6e
1 changed files with 15 additions and 3 deletions
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18
src/tpm2/NVMarshal.c
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@ -249,6 +249,18 @@ BOOL_Unmarshal(BOOL *boolean, BYTE **buffer, INT32 *size)
return rc;
}
static int
TPM2B_Cmp(const TPM2B *t1, const TPM2B *t2)
{
int ret;
ret = memcmp(&t1->size, &t2->size, sizeof(t1->size));
if (ret)
return ret;
return memcmp(t1->buffer, t2->buffer, t1->size);
}
UINT16
TPM2B_PROOF_Marshal(TPM2B_PROOF *source, BYTE **buffer, INT32 *size)
{
@ -2935,7 +2947,7 @@ VolatileState_TailV3_Unmarshal(BYTE **buffer, INT32 *size)
rc = TPM2B_Unmarshal(&seed.b, PRIMARY_SEED_SIZE, buffer, size);
}
if (rc == TPM_RC_SUCCESS) {
if (memcmp(&seed.b, &pd.EPSeed.b, PRIMARY_SEED_SIZE)) {
if (TPM2B_Cmp(&seed.b, &pd.EPSeed.b)) {
TPMLIB_LogTPM2Error("%s: EPSeed does not match\n",
__func__);
rc = TPM_RC_VALUE;
@ -2945,7 +2957,7 @@ VolatileState_TailV3_Unmarshal(BYTE **buffer, INT32 *size)
rc = TPM2B_Unmarshal(&seed.b, PRIMARY_SEED_SIZE, buffer, size);
}
if (rc == TPM_RC_SUCCESS) {
if (memcmp(&seed.b, &pd.SPSeed.b, PRIMARY_SEED_SIZE)) {
if (TPM2B_Cmp(&seed.b, &pd.SPSeed.b)) {
TPMLIB_LogTPM2Error("%s: SPSeed does not match\n",
__func__);
rc = TPM_RC_VALUE;
@ -2955,7 +2967,7 @@ VolatileState_TailV3_Unmarshal(BYTE **buffer, INT32 *size)
rc = TPM2B_Unmarshal(&seed.b, PRIMARY_SEED_SIZE, buffer, size);
}
if (rc == TPM_RC_SUCCESS) {
if (memcmp(&seed.b, &pd.PPSeed.b, PRIMARY_SEED_SIZE)) {
if (TPM2B_Cmp(&seed.b, &pd.PPSeed.b)) {
TPMLIB_LogTPM2Error("%s: PPSeed does not match\n",
__func__);
rc = TPM_RC_VALUE;