Method and apparatus for authenticating a digital certificate status and authorization credentials

A method for authenticating a message stream in a site, the method comprising:

• authenticating a radio at a site and storing unique authentication information for the radio at the site;
• receiving a subsequent non-authentication message from the radio at the site and identifying authentication information in the non-authentication message;
• comparing the unique authentication information stored at the site with authentication information identified in the non-authentication message, and when there is a match, authenticating the non-authentication message with an authentication code included in the non-authentication message, and
• upon successfully completing authentication, repeating the non-authentication message towards destination radios indicated in the non-authentication message;
• wherein the non-authentication message is a voice packet and a first predefined portion of the authentication code is obtained from a header portion of the voice packet and a second predefined portion of the authentication code is obtained from a data portion of the voice packet;
• and
• wherein the identifying authentication information in the message comprises buffering the header portion of the voice packet, identifying a source identifier in the data portion of the voice packet, and validating the source identifier with the authentication information stored at the site.

A method for authenticating a message stream in a site, the method comprising:

• authenticating a radio at a site and storing unique authentication information for the radio at the site;
• receiving a subsequent non-authentication message from the radio at the site and identifying authentication information in the non-authentication message;
• comparing the unique authentication information stored at the site with authentication information identified in the non-authentication message, and when there is a match, authenticating the non-authentication message with an authentication code included in the non-authentication message, wherein a predefined portion of the authentication code is obtained from at least one of a header portion or a data portion of the non-authentication message;
• and
• upon successfully completing authentication, repeating the non-authentication message towards destination radios indicated in the non-authentication message;
• wherein the message is a control packet and the authentication information in the message comprises one of an unconfirmed header block and a confirmed header block;
• and
• wherein the header block includes a service access point value for indicating that a control message is being authenticated and that a secondary header is being used.