Method and system for authorizing a mission critical services (mcx) server

A mission critical (MC) data message store in a wireless communication system, the MCData message store comprising:

• a transceiver;
• a processor, wherein the processor is configured to:
• receive a user account access request from a mission critical services (MCX) server, wherein the user account access request comprises identification information of the MCX server and MCData user identifier (ID);
• and
• transmit, based on the identification information of the MCX server, a response to the MCX server indicating authorization of the MCX server to access a user account corresponding to the MCData user ID.

A method performed by a mission critical (MC) Data message store in a wireless communication system, the method comprising:

• receiving a user account access request from a mission critical services (MCX) server, wherein the user account access request comprises user credentials assertion and an access token;
• validating the user credentials assertion and verifying the access token using pre-provisioned certificates associated with a MCData user identifier (ID);
• and
• providing to the MCX server security credentials required to authorize the MCX server to access the MCData message store, upon successful validation and verification.