Method and system for event notification for wireless PDA devices

A non-transitory computer-readable storage medium having computer-readable program code embodied therein for causing a computer system to perform a method of communicating messages, the method comprising:

• receiving a message from a first user of a plurality of users, wherein the message is signed with a first private key of the first user;
• verifying, using a first component, a signature of the message by using a first public key of the first user;
• determining whether said first user is authorized to send said message to a second user of said plurality of users based upon a type of said message;
• signing, using said first component, the message with a second private key of said second user;
• and
• transmitting the message to the second user for verification using a second public key of the second user.

A system comprising a processor coupled to a memory, wherein said memory comprises instructions that when executed by said processor implement a method of communicating messages, said method comprising:

• receiving a message from a first user of a plurality of users, wherein the message is signed with a first private key of the first user;
• verifying, using a first component, a signature of the message by using a first public key of the first user;
• determining whether said first user is authorized to send said message to a second user of said plurality of users based upon a type of said message;
• signing, using said first component, the message with a second private key of said second user;
• and
• transmitting the message to the second user for verification using a second public key of the second user.