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Added return checks to src/keys.c.

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This commit is contained in:
jrblixt
2017-04-07 14:15:53 -06:00
parent 6e16410e25
commit 3478c9b937
1 changed files with 19 additions and 11 deletions
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30
src/keys.c
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@@ -2960,14 +2960,18 @@ int DeriveKeys(WOLFSSL* ssl)
XMEMCPY(shaInput + idx, ssl->arrays->serverRandom, RAN_LEN);
idx += RAN_LEN;
XMEMCPY(shaInput + idx, ssl->arrays->clientRandom, RAN_LEN);
wc_ShaUpdate(sha, shaInput, (KEY_PREFIX + SECRET_LEN + 2 * RAN_LEN)
- KEY_PREFIX + j);
wc_ShaFinal(sha, shaOutput);
if (ret == 0) { /* ret could be PREFIX_ERROR. */
ret = wc_ShaUpdate(sha, shaInput,
(KEY_PREFIX + SECRET_LEN + 2 * RAN_LEN) - KEY_PREFIX + j);
}
if (ret == 0) {
ret = wc_ShaFinal(sha, shaOutput);
}
XMEMCPY(md5Input + SECRET_LEN, shaOutput, SHA_DIGEST_SIZE);
ret = wc_Md5Update(md5, md5Input, SECRET_LEN + SHA_DIGEST_SIZE);
if (ret == 0) {
ret = wc_Md5Update(md5, md5Input, SECRET_LEN + SHA_DIGEST_SIZE);
}
if (ret == 0) {
ret = wc_Md5Final(md5, keyData + i * MD5_DIGEST_SIZE);
}
@@ -3085,14 +3089,18 @@ static int MakeSslMasterSecret(WOLFSSL* ssl)
idx += RAN_LEN;
XMEMCPY(shaInput + idx, ssl->arrays->serverRandom, RAN_LEN);
idx += RAN_LEN;
wc_ShaUpdate(sha, shaInput, idx);
wc_ShaFinal(sha, shaOutput);
if (ret == 0) { /* ret could be PREFIX_ERROR. */
ret = wc_ShaUpdate(sha, shaInput, idx);
}
if (ret == 0) {
ret = wc_ShaFinal(sha, shaOutput);
}
idx = pmsSz; /* preSz */
XMEMCPY(md5Input + idx, shaOutput, SHA_DIGEST_SIZE);
idx += SHA_DIGEST_SIZE;
ret = wc_Md5Update(md5, md5Input, idx);
if (ret == 0) {
ret = wc_Md5Update(md5, md5Input, idx);
}
if (ret == 0) {
ret = wc_Md5Final(md5,
&ssl->arrays->masterSecret[i * MD5_DIGEST_SIZE]);