INFORMATION EXCHANGE DEVICE
First Claim
1. An information exchange device comprising:
- a storage device which stores information items for disclosure related to a user who discloses the information items;
an encryption device which generates encrypted information items by encrypting each item of information for disclosure using a plurality of prepared secret keys which correspond to each of the information items for disclosure;
a transmitting device which transmits the encrypted information items and the plurality of prepared secret keys; and
a decryption device which receives an encrypted information item which is arbitrarily selected from the encrypted information items, receives a secret key related to the selected encrypted information item from among the plurality of prepared secret keys, and decrypts the selected encrypted information item using the secret key.
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Accused Products
Abstract
An embodiment of the present invention provides an information exchange device. The information exchange device includes a storage device which stores information items for disclosure, an encryption device which encrypts each of the information items for disclosure using a plurality of prepared secret keys which correspond to each of the information items for disclosure, a transmitting device which transmits the encrypted information items and the plurality of prepared secret keys, and a decryption device which receives an encrypted information item which is arbitrarily selected from the plurality of encrypted information items, receives a secret key related to the selected encrypted information item from among the plurality of prepared secret keys, and decrypts the selected encrypted information item using the secret key.
47 Citations
20 Claims
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1. An information exchange device comprising:
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a storage device which stores information items for disclosure related to a user who discloses the information items; an encryption device which generates encrypted information items by encrypting each item of information for disclosure using a plurality of prepared secret keys which correspond to each of the information items for disclosure; a transmitting device which transmits the encrypted information items and the plurality of prepared secret keys; and a decryption device which receives an encrypted information item which is arbitrarily selected from the encrypted information items, receives a secret key related to the selected encrypted information item from among the plurality of prepared secret keys, and decrypts the selected encrypted information item using the secret key. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An information exchange device comprising:
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a storage device which stores information items for disclosure related to a user who discloses the information items for disclosure and also stores flag information of each of the information items for disclosure, the information items for disclosure and the flag information being correlated and stored in the storage device; an encryption device which generates encrypted information items by encrypting each of the information items for disclosure using a plurality of prepared secret keys which correspond to each of the information items for disclosure and the encrypted information items and the flag information of information items for disclosure corresponding to the encrypted information items being correlated and stored in the storage device; and a transmitting device which transmits the encrypted information items with each of the encrypted information items correlated with the flag information. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An operation method of an information exchange device comprising:
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reading information items for disclosure related to a user who discloses the information for disclosure which is stored in a storage device; generating encrypted information items by encrypting each of the information items for disclosure using a plurality of prepared secret keys which correspond to each of the information items for disclosure; transmitting the encrypted information items and the plurality of prepared secret keys; and receiving an encrypted information item which is arbitrarily selected from the encrypted information items and receiving a prepared secret key related to the selected encrypted information items from among the plurality of prepared secret keys and decrypting the selected encrypted information item using the secret key. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification