No I don't use dictionary "M". I read in PDF reference that this element
is optional and Acrobat should take date of signing from PKCS#7 binary
object.
I'm creating PKCS#7 signature with BouncyCastle library. My time stamp
is also generated in this library and then inserted into PKCS#7
unauthenticated attributes.
I tried connecting different TSA servers but with same result.
I also extracted PKCS#7 object from pdf which shows timestamp properly
and compared it with my PKCS#7 (with asn1parser) . It looks almost the
same (the same objects are present there).
I'll prepare my sample code to be easier to understand and send you.
Aleksandras S napisał(a):
Hi Tomek,
Can you show a code place where you add a timestamp?
Do you include in your signature dictionary "M" with time of signing?
On 19/05/06, *Tomek Maćkowski* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Hi
I have a problem with timestamp of digital signature. I create this
signature as 'adbe.pkcs7.detached ' and everything works fine. Now
I want
to add a timestamp to the signature (by adding ASN.1
'id-smime-aa-timeStampToken' atribute to PKCS7 signature as in RFC
3161
Appendix A). When i open this created pdf the signature is visible
, it
is verified, but acrobat reader does't show time of signature nor
timestamp authority (on Data/Time tab of signature properties)
only 'Not
available' text is shown (it shows only info: siignature is
timestamped
but the timestamp could not be verified)
When I open a sample document prepared by adobe which contains
signature
with timestampi can see signing date and timestamp authority.
I think there is a problem of parsing the signature by security
handler.
Do you have any ideas or expierences with timestamped signaatures?
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