Migrating Older Templates to iSign 4.0

iSign is backward compatible with templates created in iSign 3.x. With Microsoft .Net Framework version 1.1, templates created in iSign 3.x need to go through an encoding process in order to be readable in iSign.Net controls. Please read the section labelled "Migrating iSign 3.x Templates to iSign 4.0" for further details.

Migrating iSign 3.x Templates to iSign 4.0

In order to make templates created in iSign 3.x work with iSign.Net controls, these older templates have to be read into a stream using UTF7 encoding.

• Create a stream using .Net Framework's System.Text.Encoding namespace
• Specify the stream to open a template source using UTF7 encoding
  • See the detailed sample code in the verification form of the Signature Demo application for UTF7 encoding.

Using Only iSign 4.0 without Migrating Older Templates :

By default, the stream readers and stream writers in .Net Framwork 1.1 use UTF8 encoding.

If you are only working with the current iSign.Net controls to create templates for enrollment and verification, you can use the default encoding (UTF8) specified by the stream reader and stream writer to read and write templates to a file or database.