DLI Implementation and Reference Guide - Datalogics

15.4 DLI Implementation and Reference Guide
Digital Signature Calls
Concepts and Facilities: Guide to the DL Pager Composition System
dlpdfdoccreatesignature
This call creates a digital signature object for the DLI document being created. The
sigType value is one of:
dlpdfsigacrox509 (Adobe self-sign plug-in compatible with an x.509 v3
certificate)
dlpdfsigacropkcs7 (Adobe self-sign plug-in compatible with a PKCS #7
certificate)
dlpdfsigverisign (VeriSign signature plug-in compatible with a PKCS #7
certificate)
The nameStr, reasonStr and locationStr arguments are ASCII strings
representing the signatory's name, the reason for signing (such as an initial release or a
document revision), and the location of the signatory respectively. This information is
stored outside of the certificate and is optional.
dlpdfdocsetsignatureappearance
This call sets the appearance layers for the digital signature to the supplied
DLPDFFORM values:
• The background layer is the bottommost layer of the digital signature
appearance.
• The unverified layer is displayed when the signature has not been verified.
• The signature layer is a graphical representation of the signature itself (such as a
scanned handwritten signature).
• The textSigInfo layer is used to display information about the signature and the
signatory.
This call is optional. For an invisible digital signature, do not call this function. All the
signature layers are also optional. Blank layers will be used for any omitted signature
appearance layers. These forms are placed at the origin of the DLI page.