Importance

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Abstract

A cooperation management apparatus includes:

a key storage unit that stores a first decryption key corresponding to a first encryption key commonly used by plural information processing systems including first and second information processing systems, andplural second encryption keys corresponding to second decryption keys individually used by the information processing systems; an acquisition unit that acquires, from the first information processing system, a first file encrypted using the first encryption key and addressed to the second information processing system;a decryption unit that decrypts the first file into a second file using the first decryption key;an encryption unit that encrypts the second file using the second encryption key corresponding to the second decryption key used in the second information processing system; andan output unit that outputs a third file obtained by encrypting the second file to the second information processing system.

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First Claim