Security controlled information exchange system

• US 4,114,139 A
• Filed: 01/25/1977
• Issued: 09/12/1978
• Est. Priority Date: 01/25/1977
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Boyd, William Weller, Grafe, Robert Joseph, Pingry, Carl Oscar III
• Primary Examiner(s): Yusko, Donald J.
• Application Number:
  US05/762,376
• Time in Patent Office: 595 Days
• Field of Search: 340/149 R, 340/147 R, 178/22, 179/2 DP, 235/153 R
• US Class Current: 379/93.02
• CPC Class Codes: G06F 21/31 User authentication
• CPC Class Codes: H04L 12/22 Arrangements for preventing the taking of data from a data transmission channel without authorisation means for verifying the identity or the authority of a user of a secure or secret communication system H04L9/32
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: Y10S 379/903 Password

Abstract

A security controlled information exchange system for controlling the orderly exchange of information between two or more users under primary control of security identifiers. Each user is set up with a local user indentifier (LUID) and a number of remote user identifiers (RUID). Also, associated with selected ones of the RUIDs, are jobs which are to be communicated. A user initiates communication transfer by forwarding to another terminal its LUID and the receiving user compares the received LUID with its list of RUIDs and if a compare is made, the receiver forwards its own LUID to the initiating party. If a compare is is not made, it disconnects. The initiating party then compares the LUID which has been forwarded to it with its list of RUIDs and if no compare is made, it disconnects. If a compare is made, however, it holds onto the line and the called party then sends the jobs which are associated with the RUID which corresponds to the LUID which it received. Each RUID may be associated with a single unique job which may be forwarded to a calling user or may be associated with a number of jobs which may be chained and automatically forwarded to the calling user. In addition, a number of RUIDs may be associated with the same job or with selected ones of jobs in the complete job list.

Claims

1. A method of communicating data between terminals in a system in a selective manner comprising the steps of:

assigning an LUID to each user in said system,

transmitting the LUID of a calling user to a called terminal, and

comparing the LUID of the calling user with an RUID of the called user at the called terminal and if a compare is made by the control logic of the terminal, transmitting the LUID of the called user to the calling terminal.

2. The method of communicating of claim 1 wherein the comparison of the LUID of the calling user is made against a first predetermined list of RUIDs.

3. The method of communicating of claim 1 in which there is an RUID assigned to said calling user with which a comparison of the transmitted LUID of the called user is made and if a comparison exists a data exchange is established, but if no comparison exists, communication between the two is aborted.

4. The method of communicating of claim 2 in which there is an RUID assigned to said calling user with which a comparison of the transmitted LUID of the called user is made and if a comparison exists a data exchange established, but if no comparison exists, communication between the two is aborted.

5. The method of communicating of claim 4 wherein there is a predetermined list of RUIDs assigned to said calling user with which a comparison of the transmitted LUID of the called user is made and if a comparison exists a data exchange is established, but if no comparison exists, communications between the two is aborted.

6. The method of communicating of claim 2 in which certain of said RUIDs of said called user are associated with predetermined jobs in one of a subset of jobs and said system is further operative to terminate communication of data to said calling user when all of said jobs in said one subset of jobs which are associated with an RUID have been transmitted.

7. The method of communicating of claim 3 in which certain of said RUIDs of said called user are associated with predetermined jobs in one of a subset of jobs and being operative to terminate communication of data to said calling user when all of said jobs in said subset of jobs which are associated with an RUID have been transmitted.

8. The method of communicating of claim 4 in which certain of said RUIDs of said called user are associated with predetermined jobs in one of a subset of jobs and being operative to terminate communication of data to said calling user when all of said jobs in said subset of jobs which are associated with an RUID have been transmitted.

9. The method of communicating of claim 5 in which certain of said RUIDs of said called user are associated with predetermined jobs in one of a subset of jobs and being operative to terminate communication of data to said calling user when all of said jobs in said subset of jobs which are associated with an RUID have been transmitted.

10. The method of communicating of claim 6 in which recorded along with each of said subsets there is an indicator marker which allows data from subsequent subsets to be transmitted when said subsequent subsets contain an RUID corresponding to said transmitted LUID.

11. The method of communicating of claim 7 in which recorded along with each of said subsets there is an indicator marker which allows data from subsequent subsets to be transmitted when said subsequent subsets contain an RUID corresponding to said transmitted LUID.

12. The method of communicating of claim 8 in which recorded along with each of said subsets there is an indicator marker which allows data from subsequent subsets to be transmitted when said subsequent subsets contain an RUID corresponding to said transmitted LUID.

13. The method of communicating of claim 9 in which recorded along with each of said subsets there is an indicator marker which allows data from subsequent subsets to be transmitted when said subsequent subsets contain an RUID corresponding to said transmitted LUID.