发明授权
- 专利标题： Parameter generation apparatus, encryption system, decryption system, encryption apparatus, decryption apparatus, encryption method, decryption method, and program thereof
- 专利标题（中）： 参数生成装置，加密系统，解密系统，加密装置，解密装置，加密方法，解密方法及程序
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申请号： US10552586申请日： 2004-04-14
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公开(公告)号： US07929688B2公开(公告)日： 2011-04-19
- 发明人: Masato Yamamichi , Yuichi Futa , Motoji Ohmori , Makoto Tatebayashi
- 申请人： Masato Yamamichi , Masami Yamamichi, legal representative , Satomi Yamamichi, legal representative , Keiko Yamamichi, legal representative , Yuichi Futa , Motoji Ohmori , Makoto Tatebayashi
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2003-119973 20030424
- 国际申请： PCT/JP2004/005528 WO 20040414
- 国际公布： WO2004/095771 WO 20041104
- 主分类号： H04K3/00
- IPC分类号： H04K3/00 ; H04L9/00
摘要：
A parameter generation apparatus for generating parameters causing no decryption error for an NTRU cryptosystem so that an encrypted communication can be carried out between an encryption apparatus and a decryption apparatus in a secure and reliable manner. The parameter generation apparatus includes: a provisional parameter generation unit operable to generate a set of provisional parameters that do not cause any decryption errors, based on error condition information that is provided in advance, the error condition information indicating a condition for causing no decryption error; and an output parameter generation unit operable to generate an output parameter that does not cause any decryption errors, using the set of provisional parameters, based on a lattice constant that is calculated from the set of provisional parameters.