发明名称 |
RE-ENCRYPTED TEXT VERIFICATION PROGRAM, RE-ENCRYPTION DEVICE, AND RE-ENCRYPTION SYSTEM |
摘要 |
In a decryption apparatus according to an embodiment, a holding means pre-holds a verification formula. A determination means performs a calculation based on the verification formula read from the holding means 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 means outputs verification success when a result of the determination indicates that the verification formula holds true. |
申请公布号 |
EP2833573(B1) |
申请公布日期 |
2017.03.01 |
申请号 |
EP20130767295 |
申请日期 |
2013.01.09 |
申请人 |
Kabushiki Kaisha Toshiba;Toshiba Solutions Corporation |
发明人 |
FUJII, Yoshihiro;YOSHIDA, Takuya;OKADA, Koji |
分类号 |
H04L9/08;G09C1/00;H04L9/32 |
主分类号 |
H04L9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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