Pls Comment: Defining Authentication and Authenticity

Authentication in computing/Internet: “…the process by which a computer, computer program, or another user attempts to confirm that the computer, computer program, or user from whom the second party has received some communication is, or is not, the claimed first party. - Wikipedia, 2/10/06
http://en.wikipedia.org/wiki/Authentication

Authenticity in education: “Being authentic means that what you see is what you get. What I believe, what I say, and what I do are consistent. Of course creating that consistency is a lifelong challenge as we encounter new experiences, new persons and new information.” – Chickering, p. 8, in Encouraging Authenticity & Spirituality in Higher Education, Arthur W. Chickering, Jon C. Dalton, Liesa Stamm, 2005, Jossey-Bass