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wolfcrypt/src/pkcs7.c: correct fix for clang-analyzer-core.DivideZero in wc_PKCS7_DecodeAuthEnvelopedData().

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This commit is contained in:
Daniel Pouzzner
2023-04-12 16:37:20 -05:00
parent 4b59588cf3
commit c41030663e
1 changed files with 11 additions and 9 deletions
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12
wolfcrypt/src/pkcs7.c
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@ -11877,17 +11877,19 @@ WOLFSSL_API int wc_PKCS7_DecodeAuthEnvelopedData(PKCS7* pkcs7, byte* in,
#endif
if (expBlockSz == 0) {
if (GetAlgoId(pkiMsg, &idx, &encOID, oidBlkType, pkiMsgSz) < 0)
{
ret = ASN_PARSE_E;
break;
}
#ifndef NO_PKCS7_STREAM
wc_PKCS7_StreamGetVar(pkcs7, &encOID, NULL, NULL);
#endif
if (encOID == 0)
expBlockSz = 1;
else {
expBlockSz = wc_PKCS7_GetOIDBlockSize(encOID);
if (expBlockSz < 0) {
ret = expBlockSz;
break;
}
}
}
/* AES-GCM/CCM does NOT require padding for plaintext content or
* AAD inputs RFC 5084 section 3.1 and 3.2, but we must alloc