Authenticated Attributes in Authenticode signing

Question

Hi,
First, I hope this is the correct forum for this question... :-)
I'm developing a simple application to sign exe files with a digital signature programmatically, using the Cryptography's SignerSignEx2() function (using the Ex2, since I need the files to be time stamped as well, but the issue is the same with SignerSignEx()).
Everything works fine when simply signing with a time stamp, SignerSignEx2() finishes successfully, and file is correctly signed and time stamped.
But, I'm unable to add any authenticated attributes to the certificate.
My code looks something like this:
CRYPT_ATTR_BLOB val1;
val1.cbData = 12;
val1.pbData = (BYTE*) "hello there!";
CRYPT_ATTRIBUTE* catt = new CRYPT_ATTRIBUTE[1];
catt[0].pszObjId = "1.3.6.1.4.1.311.2.1.12";
catt[0].cValue = 1;
catt[0].rgValue = &val1;
CRYPT_ATTRIBUTES catts;
catts.cAttr = 1;
catts.rgAttr = catt;
SIGNER_SIGNATURE_INFO signerSignatureInfo;
signerSignatureInfo.algidHash = CALG_SHA1;
signerSignatureInfo.dwAttrChoice = 0;
signerSignatureInfo.pAttrAuthcode = NULL;
signerSignatureInfo.psAuthenticated = &catts;
signerSignatureInfo.psUnauthenticated = NULL;
When I add the authenticated attributes like this, SignerSignEx2() fails with 0x80093102.
What steps am I missing?
Any advice is very much welcome!

Answer 1

Hi,
As for the SignTool.exe, I suggest to post it in the MSDN forum:
http://social.msdn.microsoft.com/Forums/en-US/home
Regards
Wade Liu
TechNet Community Support