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tpm2: Clear all EC_POINT and BIGNUM before freeing

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Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2019-05-23 18:32:30 -04:00 committed by Stefan Berger
parent 10d4e5fd9d
commit 7e6473b938
1 changed files with 43 additions and 43 deletions
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86
src/tpm2/crypto/openssl/TpmToOsslMath.c
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@ -214,11 +214,11 @@ BnModMult(
sizeof(crypt_uword_t));
OsslToTpmBn(result, bnResult);
}
BN_free(bnTemp);
BN_free(bnMod);
BN_free(bnOp2);
BN_free(bnOp1);
BN_free(bnResult);
BN_clear_free(bnTemp);
BN_clear_free(bnMod);
BN_clear_free(bnOp2);
BN_clear_free(bnOp1);
BN_clear_free(bnResult);
OSSL_LEAVE();
return OK;
}
@ -249,9 +249,9 @@ BnMult(
OsslToTpmBn(temp, bnTemp);
BnCopy(result, temp);
}
BN_free(bnB);
BN_free(bnA);
BN_free(bnTemp);
BN_clear_free(bnB);
BN_clear_free(bnA);
BN_clear_free(bnTemp);
OSSL_LEAVE();
return OK;
}
@ -303,10 +303,10 @@ BnDiv(
BIGNUM_PRINT(" bnDivisor: ", bnSor, TRUE);
BIGNUM_PRINT(" bnQuotient: ", bnQ, TRUE);
BIGNUM_PRINT(" bnRemainder: ", bnR, TRUE);
BN_free(bnSor);
BN_free(bnDend);
BN_free(bnR);
BN_free(bnQ);
BN_clear_free(bnSor);
BN_clear_free(bnDend);
BN_clear_free(bnR);
BN_clear_free(bnQ);
OSSL_LEAVE();
return OK;
}
@ -336,9 +336,9 @@ BnGcd(
OsslToTpmBn(gcd, bnGcd);
gcd->size = DIV_UP(BN_num_bytes(bnGcd), sizeof(crypt_uword_t));
}
BN_free(bn2);
BN_free(bn1);
BN_free(bnGcd);
BN_clear_free(bn2);
BN_clear_free(bn1);
BN_clear_free(bnGcd);
OSSL_LEAVE();
return OK;
}
@ -368,10 +368,10 @@ BnModExp(
{
OsslToTpmBn(result, bnResult);
}
BN_free(bnM);
BN_free(bnE);
BN_free(bnN);
BN_free(bnResult);
BN_clear_free(bnM);
BN_clear_free(bnE);
BN_clear_free(bnN);
BN_clear_free(bnResult);
OSSL_LEAVE();
return OK;
}
@ -397,9 +397,9 @@ BnModInverse(
{
OsslToTpmBn(result, bnResult);
}
BN_free(bnM);
BN_free(bnN);
BN_free(bnResult);
BN_clear_free(bnM);
BN_clear_free(bnN);
BN_clear_free(bnResult);
OSSL_LEAVE();
return OK;
}
@ -463,8 +463,8 @@ EcPointInitialized(
#else
EC_POINT_set_affine_coordinates_GFp(E->G, P, bnX, bnY, E->CTX);
#endif
BN_free(bnY);
BN_free(bnX);
BN_clear_free(bnY);
BN_clear_free(bnX);
return P;
}
/* B.2.3.2.3.11. BnCurveInitialize() */
@ -510,7 +510,7 @@ BnCurveInitialize(
// Now set the generator
OK = OK && EC_GROUP_set_generator(group, P, bnN, bnH);
if(P != NULL)
EC_POINT_free(P);
EC_POINT_clear_free(P);
if(!OK && group != NULL)
{
EC_GROUP_free(group);
@ -524,13 +524,13 @@ BnCurveInitialize(
E->G = group;
E->CTX = CTX;
E->C = C;
BN_free(bnH);
BN_free(bnN);
BN_free(bnY);
BN_free(bnX);
BN_free(bnB);
BN_free(bnA);
BN_free(bnP);
BN_clear_free(bnH);
BN_clear_free(bnN);
BN_clear_free(bnY);
BN_clear_free(bnX);
BN_clear_free(bnB);
BN_clear_free(bnA);
BN_clear_free(bnP);
return OK ? E : NULL;
}
/* B.2.3.2.3.11. BnEccModMult() */
@ -553,9 +553,9 @@ BnEccModMult(
else
EC_POINT_mul(E->G, pR, NULL, pS, bnD, E->CTX);
PointFromOssl(R, pR, E);
EC_POINT_free(pR);
EC_POINT_free(pS);
BN_free(bnD);
EC_POINT_clear_free(pR);
EC_POINT_clear_free(pS);
BN_clear_free(bnD);
return !BnEqualZero(R->z);
}
/* B.2.3.2.3.13. BnEccModMult2() */
@ -589,11 +589,11 @@ BnEccModMult2(
EC_POINTs_mul(E->G, pR, NULL, 2, points, scalars, E->CTX);
}
PointFromOssl(R, pR, E);
EC_POINT_free(pR);
EC_POINT_free(pS);
EC_POINT_free(pQ);
BN_free(bnD);
BN_free(bnU);
EC_POINT_clear_free(pR);
EC_POINT_clear_free(pS);
EC_POINT_clear_free(pQ);
BN_clear_free(bnD);
BN_clear_free(bnU);
return !BnEqualZero(R->z);
}
/* B.2.3.2.4. BnEccAdd() */
@ -614,9 +614,9 @@ BnEccAdd(
//
EC_POINT_add(E->G, pR, pS, pQ, E->CTX);
PointFromOssl(R, pR, E);
EC_POINT_free(pR);
EC_POINT_free(pS);
EC_POINT_free(pQ);
EC_POINT_clear_free(pR);
EC_POINT_clear_free(pS);
EC_POINT_clear_free(pQ);
return !BnEqualZero(R->z);
}
#endif // TPM_ALG_ECC