1. A method operational on a first device for securely establishing an association with a second device over a wireless communication link, comprising: performing a cryptographic key exchange with the second device, wherein cryptographic information for the first and second device is obtained; receiving a first commitment value from the second device; generating a second commitment value at the first device; determining that the received first commitment value is equal to or a function of the generated second commitment value to secure communications between the first device and the second device; obtaining a confirmation value for the first device based on the cryptographic information after determining that the received first commitment value is equal to or the function of the second commitment value; obtaining a confirmation image based on the confirmation value by dynamically generating the confirmation image by one or more of (a) generating a watch face based on different portions of the confirmation value or (b) mapping the confirmation value to a longitude and latitude pair, obtaining at least one of a map or image of a location associated with the longitude and latitude pair, and using the map or image of the location as the confirmation image; and providing the confirmation image to an operator for authentication against a corresponding confirmation image for the second device.