Re-encrypted data verification program, re-encryption apparatus and re-encryption system
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United States of America Patent
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Jul 4, 2017
Grant Date -
Feb 12, 2015
app pub date -
Sep 8, 2014
filing date -
Mar 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
In a decryption apparatus according to an embodiment, a holding device pre-holds a verification formula. A determination device performs a calculation based on the verification formula read from the holding device by substituting, into the verification formula, the part of the re-encrypted data received from a re-encryption apparatus and the public key of a re-encryption key generation apparatus and the private key of the decryption apparatus, to determine whether or not the verification formula holds true. An output device outputs verification success when a result of the determination indicates that the verification formula holds true.
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