Adobe Acrobat SDK
What’s New
Adobe® Supplement to the ISO 32000
Barcode form fields 11
●
A new AES variant (
AESV3
) uses AES-256 encryption.
●
A new Crypt Filter Version code (5) enables 256-bit (32-byte) keys and does not try to mix the Object ID
with the encryption key.
●
A new Crypt Revision value (5) activates a new Password algorithm.
See
“3.5 Encryption” on page 13
.
Barcode form fields
The PDF language additions that support barcode form fields are now documented for Adobe extension
level 3. The barcodes feature adds an entry to the widget annotation dictionary. (See Table 8.39 on
page 39
.) This entry takes as its value a
PaperMetaData generation parameters dictionary.
(See Table 8.39b
on
page 46
.) It also adds an entry to the form field dictionary. (See Table 8.39a on
page 46
.) For more
information about barcode form fields, see the
“Barcode Fields” on page 45
.
PDF/A-2 and XML form data
A new entry,
XFAResources
, is added to the names dictionary. (See Table 3.28 on
page 23
.) This entry can
be used to save XML form data within a PDF/A-2 conforming file. (See
“Incorporation of XFA Datasets into
a PDF/A-2 Conforming File” on page 48
.)
Adobe BaseVersion 1.7 and ExtensionLevel 1
Acrobat 8.1 extended the PDF language for several 3D-related features. These extensions occurred before
the BaseVersion and ExtensionLevel properties were established. The Acrobat 8.1 PDF extensions were
finalized in April 2007 and are included in the Adobe PDF extensions for Adobe BaseVersion 1.7 and
ExtensionLevel 1.
These extensions were originally specified in
Acrobat Implementation of the PDF Specification
, which is
available at the
Adobe PDF Technology Center
. Select the PDF Specification link.
PRC in 3D annotations
Starting with Acrobat 8.1, 3D annotations can specify streams that conform to the PRC file format. Acrobat
8.1 introduced extended existing PDF features to add support for PRC and to extend support for U3D. PRC
is a new highly-compressed CAD visualization format. U3D is another standard for 3D representations.
(See
TABLE 9.39 Entries in a 3D view dictionary
on
page 57
, and
TABLE 9.47 Entries in a 3D node dictionary
on
page 58
.)
Other
Universal 3D file format
PDF 1.6 and later provide support for ECMA-363, Universal 3D file format, edition 1. Acrobat 8.1 extends
this support to ECMA-363, Universal 3D file format, 3rd Edition. This feature affects the bibliography. (See
“Bibliography” on page 102
.)
