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Merge pull request #3594 from haydenroche5/zd10911

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Fix issue with DoHandShakeMsgType/ShrinkInputBuffer when encryption i…
This commit is contained in:
David Garske
2021-01-28 16:55:04 -08:00
committed by GitHub
parent 311a0d25dd fc845da9f0
commit 4f6deb8ae9
1 changed files with 19 additions and 1 deletions
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20
src/internal.c
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@@ -12950,7 +12950,25 @@ static int DoHandShakeMsgType(WOLFSSL* ssl, byte* input, word32* inOutIdx,
&& ssl->error != WC_PENDING_E && ssl->error != OCSP_WANT_READ
#endif
) {
ShrinkInputBuffer(ssl, NO_FORCED_FREE);
if (IsEncryptionOn(ssl, 0)) {
word32 extra = ssl->keys.padSz;
#if defined(HAVE_ENCRYPT_THEN_MAC) && !defined(WOLFSSL_AEAD_ONLY)
if (ssl->options.startedETMRead)
extra += MacSize(ssl);
#endif
if (extra > ssl->buffers.inputBuffer.idx)
return BUFFER_E;
ssl->buffers.inputBuffer.idx -= extra;
ShrinkInputBuffer(ssl, NO_FORCED_FREE);
ssl->buffers.inputBuffer.idx += extra;
}
else {
ShrinkInputBuffer(ssl, NO_FORCED_FREE);
}
}
#if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLFSSL_NONBLOCK_OCSP)