Proposed+Changes+to+publickey+meta+informaiton

Issue:
According to the UDDI v3.0.2 the maximum field length for a tModel key value is 256 characters. Currently the Nationwide Health Information Network Web Services Registry Specification details the use of the publickey string to be stored at a tModel value for the tModle key uddi:nhin:nhie:publickey. The PKI certificates used by the Nationwide Health Information Network result in public key string greater than 256 characters, therefore they cannot be stored in raw string format in the UDDI.

Options:

 * 1) __//Remove the publickey information from the registry//__. The use cases for including such information have never been clearly defined, other than the desire for ONC to be a source of this information. Most uses of this information occurs during the initial 2-way SSL handshake usually by some mechanism within a Nationwide Health Information Network participants network (firewall, context switch, web server, ...). Other potential uses alluded to include the potential need for the information in some message encryption or digital signatures scenarios where that information is not available through other mechanisms.
 * 2) __//Each Nationwide Health Information Network participant provides a url to their public key//__. This was the original solution used during the Nationwide Health Information Network Trial Implementations. Each HIO HIO would be responsible for making the key available via a non-secured url. The url would be stored in the Nationwide Health Information Network Web Services Registry.
 * 3) __//ONC provides a url to each Nationwide Health Information Network participants public key//__. Similar to option 2 except ONC would store the public key information on web servers managed by the Nationwide Health Information Network program.


 * Resolution:**

Decision to select option 1 and remove publickey information from the registry. However ONC will continue to collect the publickey values as part of the Nationwide Health Information Network on-boarding process in case it is ever decided to publish the information by some alternative means.

//Proposed Updated Version of the Specification://