SECTION 8.6
699
Interactive Forms
KEY
TYPE
VALUE
TimeStamp
dictionary
(Optional; PDF 1.6)
A time stamp dictionary containing two entries:
URL
An ASCII string specifying the URL of a time-stamping server,
providing a time stamp that is compliant with RFC 3161,
Internet
X.509 Public Key Infrastructure Time-Stamp Protocol
(see the Bib-
An integer whose value is 1 (the signature is required to have a
time stamp) or 0 (the signature is not required to have a time
stamp). Default value: 0.
Ff
LegalAttestation
array
(Optional; PDF 1.6)
An array of text strings specifying possible legal attesta-
tions (see Section 8.7.4, “Legal Content Attestations”). The value of the corre-
sponding flag in the
Ff
entry indicates whether this is a required constraint.
(Optional;
PDF 1.7)
A flag indicating whether revocation checking should be
carried out. If
AddRevInfo
is
true
, the viewer application performs the follow-
ing additional tasks when signing the signature field:
AddRevInfo
boolean
•
Perform revocation checking of the certificate (and the corresponding issu-
ing certificates) used to sign.
•
Include the revocation information within the signature value.
A value of
true
is relevant only if
SubFilter
is
adbe.pkcs7.detached
or
adbe.pkcs7.sha1
. If
SubFilter
is
x509.rsa_sha1
, this entry must be omitted or
set to
false
; otherwise, the signature process may fail.
If
AddRevInfo
is true and the
Ff
entry indicates this is a required constraint,
then the tasks described above must be performed. If they cannot be per-
formed, then signing must fail.
Default value:
false
Ff
integer
(Optional)
A set of bit flags specifying the interpretation of specific entries in
this dictionary. A value of 1 for the flag indicates that the associated entry is a
required constraint. A value of 0 indicates that the associated entry is an op-
tional constraint. Bit positions are 1 (
Filter
); 2 (
SubFilter
); 3 (
V
); 4 (
Reasons
); 5
(
LegalAttestation
); 6(
AddRevInfo
); and 7(
DigestMethod
). Default value: 0.