Program, classification method and system

Details Program, classification method and system Program, classification method and system

2006-05-31

2010-10-12

Zand, Kambiz (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S054000

Reexamination Certificate

active

07814323

ABSTRACT:
A system and method classifies multiple pieces of private data owned by multiple entities according to data type. Each of the entities has an encryption key. A representative entity is selected that is representative of the entities owning data of the type. Data of each of the representative entity and a target entity is encrypted and the encrypted data is exchanged between the entities. Each piece of the encrypted data that the target entity has obtained is re-encrypted by using its own encryption key to obtain data1, and the encrypted data that the representative entity has obtained is re-encrypted by using its own encryption key to obtain data2. If data1of the representative entity matches data2, it is determined that the representative entity and the target entity have data of an identical type.

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