| 摘要 |
FIELD: digital data distribution systems. ^ SUBSTANCE: proposed system has open-key infrastructure and functions to distribute digital data from one or more servers or suppliers through network to plurality of users and provides for verifying data integrity and authenticity. Its server saves list of digital data imprints. Other imprint is calculated for this list and supplied to client's terminal. Open-key system client's terminal receives digital data imprint list from first source of this system. Then client's terminal receives imprint for this imprint list both from first and second sources to compare both imprints received. ^ EFFECT: provision for controlling access to distributed digital data upon their recording by receiving party. ^ 30 cl, 14 dwg
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