发明名称 |
SIGNATURE GENERATION DEVICE, KEY GENERATION DEVICE, AND SIGNATURE GENERATION METHOD |
摘要 |
There is provided a signature generation apparatus capable of preventing transcript attack on signature data. The signature generation apparatus for generating signature data for message data (i) acquires, according to a predetermined acquisition method, a private key, which is different from a private key used in a previous digital signature operation, from among a plurality of private keys generated using a key generation method of a signature scheme in which the plurality of private keys correspond to a single public key, and (ii) performs, using the acquired private key, a digital signature operation on the message data according to a signature method of the signature scheme to generate the signature data. |
申请公布号 |
EP1843512(B1) |
申请公布日期 |
2010.03.17 |
申请号 |
EP20060711788 |
申请日期 |
2006.01.17 |
申请人 |
PANASONIC CORPORATION |
发明人 |
FUTA, YUICHI;HASEGAWA, SHINGO;ISOBE, SHUJI;OHMORI, MOTOJI;SHIZUYA, HIROKI |
分类号 |
H04L9/32;H04L9/14 |
主分类号 |
H04L9/32 |
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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