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selected image. The pane second from the left displays the width and height, in pixels, of the currently
selected image.
4.
Repeat steps 1-2 to import and manipulate additional images, if desired. Each image you import is
maintained as a separate graphic element until you save the work area, so you can manipulate it
separately.
5.
If you have multiple images in the workspace, you can perform the following on any one of them,
using the image’s right-click menu:
Bring To Front
>
Bring To Front
– Place the selected image in front of the image that is right
in front of it.
Bring To Front
>
Bring Forward
– Place the selected image in front of all the images.
Send To Back > Send To Back
– Place the selected image behind the image that is right
behind it.
Send To Back > Send Backward
– Place the selected image behind all the images.
Transparency Level
– Set the transparency level of the selected image (between 0 - 100%). A
higher value sets higher transparency.
Clear Image
– Delete the image from the work area.
6.
Optionally crop the display in the work area, as follows:
a.
Click
and with the mouse mark a region in the work area that you wish to save. The
right-most pane in the status bar shows the width and height, in pixels, of the selected
region. Optionally move the image, or resize it.
b.
Click
again to exit selection mode.
c.
Click
. The area outside the selected region is cleared.
7.
At any point, you can view the pane second from the right in the status bar for information about the
width and height, in pixels, of the work area display.
8.
When you finish modifying the display in the work area, click
to save the display in the work area
as an image. A file selection widow appears. Specify the file type (either JPG or BMP), and specify a
name and path for the file.
CoSign Signature Designer Menu Options
The CoSign Signature Designer menu includes the following options:
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Using the Graphical Signature Management Application 4
37
Menu Item Option
Description
File
New
Create a new work area.
Import
Import a new image into the work area.
Clear All
Clear the entire work area.
Save
Save the current display in the work area as a JPG or BMP file.
During the save, empty space surrounding the display is cropped out.
Save As
Similar to
Save
.
Exit
Exit the utility.
Help
About
Displays information about ARX, and a link to the ARX web site.
CoSign Signature Designer Toolbar Options
The CoSign Signature Designer toolbar includes the following options:
Button
Description
Create a new work area.
Save the current display in the work area as a JPG or BMP file.
During the save, empty space surrounding the display is cropped out.
Activate/deactivate the Select Region option:
Click once to activate the Select Region mode, and mark with the mouse a region in the work
area that you wish to save. You can move the image, or resize it.
Click again to exit from the Select Region mode.
Crop the display to the selected region.
Clear the entire work area.
CoSign Signature Designer Status Bar Information
The four panes in the status bar provide the following information:
Pane Location
Description
Left most
x,y location of the top-left corner of the currently selected image.
Second from left
Width and height, in pixels, of the currently selected image.
Second from right Width and height, in pixels, of the work area display. When you save, this will be the
size of the saved image.
Right most
Width and height, in pixels, of the selected region. This is relevant when the Select
Region tool is used.
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39
Chapter 5: Signing Microsoft Office Documents
CoSign enables generating and validating digital signatures for Microsoft Office applications, and
integrating the digital signatures into the general application flow. CoSign supports integration with the
following applications:
Office 2013 documents – Refer to Signing Office 2007/2010/2013 Documents – New Document Style.
Office 2010 documents – Refer to Signing Office 2007/2010/2013 Documents – New Document Style.
Office 2007 documents – Refer to Signing Office 2007/2010/2013 Documents – New Document Style.
Word XP and Word 2003 – Refer to Signing Word and Excel Documents – Office XP/2003 Style.
Excel XP, Excel 2003 – Refer to Signing Word and Excel Documents – Office XP/2003 Style.
InfoPath 2007/2010/2013 – Refer to Chapter 6: Signing InfoPath 2007/2010/2013 Forms.
Signing Office 2007/2010/2013 Documents – New Document Style
CoSign enables you to add digital signatures, as well as graphical signatures, to .docx and .xlsx Office
2007/2010/2013 documents using a special plug-in called ARX Signature Line Provider. To enable the plug-
in, you must install the ARX CoSign Client and
ARX
’s
Microsoft Office (Word, Excel) client
components. For information on installing these components, refer to Installing the CoSign Client.
The signing process and the configuration of its various options are performed using the ARX Office
Signatures Line Provider. This provider fits into the signature line provider concept in Office
2007/2010/2013.
The basic signing process consists of placing signature place-holders (or signature fields) in the desired
locations in the document, and signing each field. After signing, you can validate the signatures. Validation
assures you that the document was not modified after it was signed and that a trusted CA approved the
signers’ certificates.
You can also activate the ARX Legacy Word Add-in plug-in on pre-2007 .doc or .xls files when using Office
2007/2010/2013. For more information, refer to Signing Word and Excel Documents – Office XP/2003 Style.
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CoSign User Guide
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Adding Signature Fields in Office 2007/2010/2013
Use the
Insert
tab’s special
Signature Line
option to add a new signature field (refer to Figure 22). Click
ARX CoSign Signatures Add-in for Office
.
Figure 22 Selecting the ARX CoSign Signatures Add-in for Office
A new signature field is generated and embedded inside the Office 2007/2010/2013 document.
Figure 23 Creating a New Signature Field in an Office 2007/2010/2013 Document
You can perform several operations on this field using the right-click menu, as shown in Figure 24.
Figure 24 Signature Field Right-Click Menu Options in Office 2007/2010/2013
The following two operations are relevant to an empty signature field:
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Signing Microsoft Office Documents
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41
Sign
– Performs the digital signature on the empty signature field. Refer to Signing Empty Signature
Fields in Office 2007/2010/2013 for a full description of the digital signature operation.
Signature Setup
– Refer to Configuring Signature Settings in Office 2007/2010/2013.
All other operations in the right-click menu are applicable to the empty signature field object and are
standard Office 2007/2010/2013 operations for displayable objects.
Configuring Signature Settings in Office 2007/2010/2013
The following sections describe how to configure signature settings in Office 2007/2010/2013.
CoSign Signature Setup in Office 2007/2010/2013 – General Settings
When you select
Signature Setup
from the right-click menu of a signature field (refer to Figure 24), the
CoSign Signature Setup dialog box appears, with the
Settings
tab displayed.
Figure 25 CoSign Signature Setup in Office 2007/2010/2013 – Settings Tab
This dialog box enables you to define several parameters of the signature field. Some of these parameters
will be displayed in the signature field and others are used during future signature operation. The
parameters include:
Suggested signer
– The name of the person who is required to sign this signature field. This
parameter is displayed as part of an empty signature block.
Suggested signer’s title – The role of the person who is required to sign this signature field. This
parameter is displayed as part of an empty signature block.
Suggested signer’s e
-mail address
– The email address of the person required to sign this
signature field.
Instructions to the signer
– The text displayed to the signer during the Sign operation.
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Allow the signer to add reason in the Sign dialog
– If this option is selected, the signer will be able
to add a reason. If you wish this reason to display in the signature field, check the
Show Reason
field
in the
Advanced
tab.
Note: Some of the parameters in the
Settings
tab can be used to enable CoSign Signature
APIs to locate a certain signature, providing the ability to perform digital signatures through
CoSign Signature APIs.
Note: If you want the CoSign Signature Setup dialog box to appear on creation of each signature
field, refer to Setting Microsoft Office Configuration.
CoSign Signature Setup in Office 2007/2010/2013 – Advanced Settings
Figure 26 CoSign Signature Setup in Office 2007/2010/2013 – Advanced Tab
The
Advanced
tab of the CoSign Signature Setup dialog box includes the following parameters:
Date and Time Format
– Set the displayed format of the signature date and time.
Show
– Specify whether to display elements in the graphical signature such as
Date and time
,
Reason
,
Signed by
,
Title
, and
Logo.
A single graphical signature can be displayed and you can select whether this graphical signature is a
regular graphical signature or
Initials
.
Signing Empty Signature Fields in Office 2007/2010/2013
You can sign the content of an Office 2007/2010/2013 document by right-clicking an empty signature field
and selecting
Sign
from the right-click menu. After performing the Sign operation, nothing can be changed
in the document except that other users can sign other empty fields inside the document.
A standard signing ceremony is used for the purpose of collecting the information required for the digital
signature operation. This includes creating or editing a graphical signature, if desired.
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Signing Microsoft Office Documents
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43
To sign the content of an Office 2007/2010/2013 document:
1.
Right-click an empty signature field and select
Sign
from the right-click menu.
The Signing Ceremony dialog box appears. The signing ceremony dialog is identical for all CoSign
applications.
Figure 27 Standard Signing Ceremony Dialog Box
The dialog box may contain some or all of the following sections:
Graphical signature selection
– In the upper section of the dialog you can specify the graphical
signature that will be embedded inside the digital signature. If you select to edit the graphical
signature or create a new one, a dialog of the graphical image utility appears (Figure 15). For
explanations, refer to the explanations following Figure 15.
The only difference is that in the New Signature dialog box you can choose to use a one-time
graphical signature (Figure 28). The one-time graphical signature will be used only for this specific
digital signature operation and will not be kept in the CoSign appliance or CoSign software
token/MiniKey.
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CoSign User Guide
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Figure 28 New Signature Dialog Box with One-Time Signature Option
Reason
– If a
Reason
field is displayed, select a reason from the predefined list or enter you own
specific reason for this signature operation.
The list of predefined reasons is identical for all the CoSign add-ins. This list is based on a default list
that can be edited by an administrator using the configuration utility (refer to Signature API –
Reasons). If a user enters a new reason, all current reasons are in the ownership of the user and
maintained locally in the user’s PC account.
If you click
Reset
, you revert to the list of reasons administrated using the configuration utility.
Title
– If a
Title
field is displayed, enter the title of the signer.
Change
– Clicking this link enables you to select the certificate to be used as part of the digital
signature operation. The common name of the signer, as taken from the certificate, is displayed on
the same line as the link.
A digital signature operation is performed using the CoSign appliance or software token/MiniKey, based on
parameters that were defined in the Sign this document dialog box (refer to Figure 27) and the CoSign
Signature Setup dialog box (Figure 25).
The following figure shows a sample outcome of the digital signature operation.
Figure 29 Sample Digital Signature in Office 2007/2010/2013
In this example, the top right of the digital signature includes the signature date and time. The center of the
graphical signature includes the selected graphical signature. If a graphical signature was not selected, the
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Signing Microsoft Office Documents
5
45
signer’s name is displayed in a special script font. The reason is displayed beneath the signature line, as well
as the signer’s name if an image was selected.
The following figure shows an invalid digital signature.
Figure 30 Sample Invalid Digital Signature in Office 2007/2010/2013
Note: It is possible to generate an invisible digital signature. Refer to the CoSign Signature APIs
PIs
Developer’s Guide for information on how to generate an invisible digital signature.
Note: The certificate that is used for signing must be fully trusted. This means that the certificate chain
must be trusted and all CRLs of the certificates in the certificate chain must be accessible.
Failing to trust the entire certificate chain and the certificate CRLs may cause the entire digital
signature process to fail.
Validating and Viewing Digital Signatures in Office 2007/2010/2013
In an Office 2007/2010/2013 document (.docx or .xlsx file), the visual display of the digital signature
indicates the validity of the digital signature. If an existing digital signature is invalid, it will be indicated in
the document.
The following options are available when you right-click a signed digital signature field:
Figure 31 Signed Digital Signature Field Right-Click Options
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CoSign User Guide
46
Signature Details
– Displays information related to the digital signature and the signer’s certificate,
as shown in Figure 32.
Figure 32 CoSign Signature Details in Office 2007/2010/2013 – Signature tab
Signature Setup
– Displays signature setup without the ability to modify the values. The fields you
can view are described in Configuring Signature Settings in Office 2007/2010/2013.
Remove Signature
– Enables the user to remove the signature. After this operation is acknowledged,
the empty signature field is displayed.
Note: The option
Sign Again
is not relevant for the ARX Signature Line Provider.
Digital signatures are also listed in a special list of digital signatures that appears to the right of the
document. To display the digital signatures list, either select the
Prepare/View signatures
option from the
main icon of Office 2007/2010/2013, or select the digital signature seal indication in the lower left side of
the Office window.
The digital signature seal indication appears only if there is a signature inside the
document.
In the list you can see all unsigned signature fields and existing digital signatures of the document. The
right-click options available in the list are the same as those available by right-clicking a digital signature or
empty signature field inside the document.
Validating Digital Signatures without Using the ARX Signature Line Provider
Digital signatures that were attached using CoSign in Office 2007/2010/2013 can be validated without using
CoSign. This is useful if you receive documents from a company or organization that uses CoSign internally.
If the signer’s certificate was created by a Worldwide verifiable CA, you need not perform any action prior to
the validation process.
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