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fix wc_PKCS7_EncodeSignedData when used with empty or no signed attributes

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This commit is contained in:
Chris Conlon
2016-11-16 13:35:57 -07:00
parent f922d3f2d6
commit 8cea6ad148
1 changed files with 5 additions and 1 deletions
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6
wolfcrypt/src/pkcs7.c
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@ -503,8 +503,12 @@ int wc_PKCS7_EncodeSignedData(PKCS7* pkcs7, byte* output, word32 outputSz)
}
wc_ShaUpdate(&esd->sha, attribSet, attribSetSz);
wc_ShaUpdate(&esd->sha, flatSignedAttribs, flatSignedAttribsSz);
wc_ShaFinal(&esd->sha, esd->contentAttribsDigest);
} else {
/* when no attrs, digest is contentDigest without tag and length */
XMEMCPY(esd->contentAttribsDigest, esd->contentDigest + 2,
SHA_DIGEST_SIZE);
}
wc_ShaFinal(&esd->sha, esd->contentAttribsDigest);
digestStrSz = SetOctetString(SHA_DIGEST_SIZE, digestStr);
digestInfoSeqSz = SetSequence(esd->signerDigAlgoIdSz +