Trust and identity in secure calendar sharing collaboration

A computer program product comprising:

• a computer usable medium having computer usable program code embodied therewith, the computer usable program code comprising:
• computer usable program code configured to:
• determine from a database of trust information whether a trust relationship exists between a first organization and a second organization;
• provide availability information of a user associated with the first organization to a user associated with the second organization;
• determine whether the user associated with the second organization is granted access to requested schedule information of the user associated with the first organization based on security and identity information of the user that is associated with the second organization;
• and
• responsive to a positive determination, provide the requested schedule information.

A method for securely managing calendar across corporate boundaries, the method comprising:

• transmitting a request for availability of a first user having a schedule maintained at a first calendar application maintained by a first corporate entity, the request transmitted by a second user having a schedule maintained by a second calendar application maintained by a second corporate entity, the request transmitted to a central trust management system that is operable to determine whether a trust relationship exists between the first corporate entity and the second corporate entity;
• receiving availability information of the first user;
• generating a request to schedule a meeting of the first user by the second user, the generating being performed from the availability information of the first user;
• transmitting to the central trust management system, the request to schedule a meeting of the first user by the second user;
• transmitting to the central trust management system, security and identity information of the second user;
• and
• receiving from the central trust management system, an indication of a meeting scheduled for the second user with the first user in accordance with the request to schedule a meeting.