Cryptographic processing system, key generation device, encryption device, decryption device, cryptographic processing method, and cryptographic processing program

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United States of America Patent

PATENT NO 8938623
SERIAL NO

13823507

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Abstract

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The object is to provide a secure functional encryption scheme having many cryptographic functions. An access structure is constituted by applying the inner-product of attribute vectors to a span program. The access structure has a degree of freedom in design of the span program and design of the attribute vectors, thus having a large degree of freedom in design of access control. A functional encryption process is implemented by imparting the access structure to each of a ciphertext and a decryption key.

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Patent Owner(s)

  • MITSUBISHI ELECTRIC CORPORATION;NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okamoto, Tatsuaki Tokyo, JP 30 1679
Takashima, Katsuyuki Tokyo, JP 33 382

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