发明公开
- 专利标题： INFORMATION PROCESSING DEVICE, PROGRAM, AND STORAGE MEDIUM
- 专利标题（中）： 信息管理系统，程序设计
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申请号： EP15776988.6申请日： 2015-02-04
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公开(公告)号： EP3032523A1公开(公告)日： 2016-06-15
- 发明人: TAKATSUKASA, Kenji
- 申请人： Fuji Electric Co., Ltd.
- 申请人地址： 1-1 Tanabeshinden Kawasaki-ku Kawasaki-shi, Kanagawa 210-9530 JP
- 专利权人： Fuji Electric Co., Ltd.
- 当前专利权人： Fuji Electric Co., Ltd.
- 当前专利权人地址： 1-1 Tanabeshinden Kawasaki-ku Kawasaki-shi, Kanagawa 210-9530 JP
- 代理机构： Appelt, Christian W.
- 优先权： JP2014081338 20140410
- 国际公布： WO2015156020 20151015
- 主分类号： G09C1/00
- IPC分类号： G09C1/00 ; H04L9/32
摘要：
OBJECT
To provide an information processing apparatus, a program and a storage medium capable of performing an efficient computation of a GHASH function.
MEANS OF SOLUTION
An information processing apparatus has an encryption part that encrypts by block encryption, and is embeddable in an electronic apparatus, and achieves the above object by segmenting an authentication target message into one or more blocks for every 128 bits, the authentication target message including at least a predetermined authentication parameter and first encryption information that is obtained by encrypting plaintext information by the encryption part, successively computing each of the one or more segmented blocks by a GHASH function including a predetermined algorithm, using a plurality of 8-bit arrays including 16 elements, and generating second encryption information that is obtained by encrypting a computed result by the encryption part, to generate an authentication tag.
To provide an information processing apparatus, a program and a storage medium capable of performing an efficient computation of a GHASH function.
MEANS OF SOLUTION
An information processing apparatus has an encryption part that encrypts by block encryption, and is embeddable in an electronic apparatus, and achieves the above object by segmenting an authentication target message into one or more blocks for every 128 bits, the authentication target message including at least a predetermined authentication parameter and first encryption information that is obtained by encrypting plaintext information by the encryption part, successively computing each of the one or more segmented blocks by a GHASH function including a predetermined algorithm, using a plurality of 8-bit arrays including 16 elements, and generating second encryption information that is obtained by encrypting a computed result by the encryption part, to generate an authentication tag.
公开/授权文献
- EP3032523B1 INFORMATION PROCESSING DEVICE, PROGRAM, AND STORAGE MEDIUM 公开/授权日：2019-03-27
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