Hi,

        I have a query regarding Font obfsucation while embedding fonts in XPS documents.

1. Do all the fonts get obfuscated while the document is getting created as container file.

2. Also is font obsfucation always based on fsType member of the OS/2 table.

3. We used the XPS document writer and performed the following experiments.

We create a document that uses majalla.ttf(it has fstype = 8) for a simple document in wordpad.

       a. As per XPS spec a Font which  has fstype  = 8 must be obfuscated.

Bit/mask	Licensing right intent	Producer rules	Consumer rules

3 / 0x0008

Editable embedding.

MUST do embedded font obfuscation (see Section 2.1.7.3).

MUST NOT extract or install permanently.

The above table is an extract form the XPS spec. Page 14. Table 2.6 version 8.

We expect the Document writer to obfuscate the font, but the font is not obfuscated. I am able to view it with the font viewer. Also the name of the embeded font in the container does not have the GUID type of extension.

Please let me know if my experiments are correct. Thanks in advance.

regards,

Karthikeyan

1. Microsoft products will do font obfuscation in all cases. Note that the consumer's must not second guess the decision of the producer to obfuscate / not-obfuscate. Font obfuscation is the producer's obligation to honor font licensing intent only.

2. Font Obfuscation decisions will always be based on fsType.

3. Font Obfuscation was just recently implemented. The XpsDocumentWriter you have been testing with apparently did not have that support implemented.

Thanks Oliver.

Can I know the "Vista" build from which the XPSDocumentWriter has Font Obfuscation implemented.

regards,

Karthikeyan.