| 摘要 |
A SYSTEM FOR SECURE COMMUNICATION ACROSS A COMMUNICATION NETWORK INCLUDING A PERSONAL CODE GENERATION MEANS (12) HAVING ONE OR MORE IDENTIFICATION CODES (20) AND ONE OR MORE ENCRYPTION CODES (22). THE IDENTIFICATION CODES (20) AND THE ENCRYPTION CODES (20) EACH CHANGE AT PREDETERMINED TIME INTERVALS. A CODE SERVER (16) IS PROVIDED AND IS SYNCHRONISED WITH THE PERSONAL CODE GENERATION MEANS (12) SUCH THAT THE CODE SEVER (16) HAS INFORMATION REGARDING THE CURRENT IDENTIFICATION CODES (20) AND THE CURRENT ENCRYPTION CODES (22) OF THE PERSONAL CODE GENERATION MEANS (12). A USER TRANSMITS ACROSS THE COMMUNICATION NETWORK, THE CURRENT IDENTIFICATION CODES (20) AND DATA ENCRYPTED WITH THE CURRENT ENCRYPTION CODES (22) AND THE CODE SERVER (16) USES THE INFORMATION REGARDING THE CURRENT IDENTIFICATION CODES (20) TO AUTHENTICATE THE USER AND THE INFORMATION ABOUT THE CURRENT ENCRYPTION CODES (22) TO DECRYPT THE TRANSMITTED DATA.
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