Using Silanis signaturesAdded by IBM on August 8, 2013 | Version 1 (Original)
|The Silanis engine uses special Silanis technology. As such, users must have Silanis software installed on their computers to access those certificates and use Silanis to set signatures.
To create a signature button that uses the Silanis engine, set the following parameters in the signformat option:
Additionally, Silanis software allows you to create No-Lock signatures by adding the following parameter:
- MIME type — The MIME type that is used to store the signature information. You should always use application/vnd.xfdl.
- engine — The name of the signing engine to use. In this case, Silanis.
- delete — Optional. This flag sets whether the user can delete the signature. By default, users can delete all signatures. If you want to prevent a signature from being deleted, set this to off.
- lock — This flag sets whether the signature locks the data. By default, this is set to on, which means signatures lock the data they sign. If you want to prevent a signature from locking data, set this to off. For more information, refer to About no-lock signatures.
- If the form is opened in Webform Server, then signing a Silanis signature requires the use of the Webform Server plugin/ActiveX control. The plugin/ActiveX control is automatically downloaded to the browser when it is needed.
Silanis signatures display an image rather than text on the signature button. This allows the Silanis software to show a graphic of the user's handwritten signature once the form is signed.
The graphic that displays the user's handwritten signature is captured once and then saved until needed. It is not placed in the form until the form is signed.
You should include an empty data item in your form. This item stores the Silanis signature image once the form is signed. However, before the Viewer can locate the empty data item, you must add a link to the button that points to it.
The signature button must display one of two images: the blank image, or the signature image provided by the Silanis software. As with any button, the image option is used to set which image is displayed.
The following example shows a signature button that is completely configured for a Silanis signature.
When you create a No-Lock signature, the Viewer does not lock the data covered by that signature. This means that you can make changes to the data even though it is signed.
With a No-Lock signature, the Viewer does not lock the data covered by that signature. This means users can make changes to data even though it has been signed.
An approving signature added to a form so users can approve changes made to data covered by a No-Lock signature. The approving signature must sign all data that is covered by the No-Lock signature, as well as the No-Lock signature itself.
The following example shows two buttons: a No-Lock signature button, and an approving signature button (that locks the form).