Here's a link to the white paper written by Dr. Lyle J. Rapacki.
The statement of purpose in the document clearly indicates that the document is intended to stimulate discussion. Had the FBI requested such a white paper, the document would reference such a request. It appears that Dr. Rapacki references his membership in the FBI InfraGard as a way to associate the FBI with the document, therefore making it sound more official.
At the present time, I am unable to confirm his membership in InfraGard, but will get back to you with more information as soon as I have it.
To answer you question, yes. It appears Dr. Rapacki wrote the document and submitted it to the FBI as an InfraGard member hoping it would gain some attention within the FBI.
According to the web site there is no FBI InfraGard.