Blind decoding, blind undeniable signatures, and their applications to privacy protection

Kouichi Sakurai, Yoshinori Yamane

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

22 被引用数 (Scopus)

抄録

A cryptographic concept, blind decoding is discussed: a client has a message encrypted with a server's public key and the client asks the server to decode the message without revealing what is the decoded plaintext nor learning the server's secret key. Blind decoding is a useful tool for protecting user's privacy in on-line shopping over the Internet. The RSA-based blind decoding is easily converted from the similar protocol as the Chaum's blind signature scheme, and a blind decoding protocol for the E1Gama] encryption scheme is newly proposed. Moreover, the practical gap between the known RSA-based blind decoding and our E1Gamal-based scheme is discussed in the application to protecting copyright matter of electronic documents. In blind decoding scheme, undeteetability of the decrypted message has both negative and positive aspects: a negative aspect is considered as the problem of spotting the oracle and a positive aspect is applicable to making undeniable signatures blind against the signer.

本文言語英語
ホスト出版物のタイトルInformation Hiding - 1st International Workshop, Proceedings
編集者Ross Anderson
出版社Springer Verlag
ページ257-264
ページ数8
ISBN(印刷版)9783540619963
DOI
出版ステータス出版済み - 1996
イベント1st International Workshop on Information Hiding, 1996 - Cambridge, 英国
継続期間: 5 30 19966 1 1996

出版物シリーズ

名前Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
1174
ISSN(印刷版)0302-9743
ISSN(電子版)1611-3349

その他

その他1st International Workshop on Information Hiding, 1996
国/地域英国
CityCambridge
Period5/30/966/1/96

All Science Journal Classification (ASJC) codes

  • 理論的コンピュータサイエンス
  • コンピュータ サイエンス(全般)

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