Signer authenticated attribute

[Vishal Agarwal[MSFT]]

What's the attribute you want to put?

Thanks,
Vishal [MSFT]

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"Massimo Gaddini" <anon...@discussions.microsoft.com> wrote in message
news:B7B0F78B-73C6-458A...@microsoft.com...
> Hi,
> how i can insert a signer authenticated attribute during the signing
process?
> I sign one file with CryptSignMessage API function and I pass it the
CRYPT_SIGN_MESSAGE_PARA structure.
> The signing process work but i don't know how to set the field rgAuthAttr
in the CRYPT_SIGN_MESSAGE_PARA structure.
> Which CryptoAPI function must i call ?
>
> Thanks
> Massimo Gaddini
>

[Massimo Gaddini]

Well, i want to put the "signingTime" attribute first.
Where can i find a complete list of available attributes, with their OID and meaning?

Thanks,
Massimo Gaddini

----- Vishal Agarwal[MSFT] wrote: -----

[Vishal Agarwal[MSFT]]

You will have to create a CRYPT_ATTRIBUTE structure with oid as
szOID_RSA_signingTime and set its reference as the value of rgAuthAttr.
Its a single valued attribute with CRYPT_ATTR_BLOB containing the asn
encoded UTC time (You can use CryptEncodedObject with the same Oid to obtain
the encoded data).

Depending on the attribute you want and if its a known attribute, you should
find it in the help for CryptEncodeObject or in Wincrypt.h

Thanks,
Vishal [MSFT]

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This posting is provided "AS IS" with no warranties, and confers no rights
"Massimo Gaddini" <anon...@discussions.microsoft.com> wrote in message

news:3B6D154C-AA3D-4AD3...@microsoft.com...