PIATS: A Partially Sanitizable Signature Scheme

PIATS: A Partially Sanitizable Signature Scheme

In e-government or e-tax payment systems, appropriate alterations on digitally signed documents are required to hide personal information, namely privacy. Standard digital signature schemes do not allow such alternations on the signed documents since there is no means to distinguish appropriate alte...

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Hauptverfasser: Izu, Tetsuya, Kanaya, Nobuyuki, Takenaka, Masahiko, Yoshioka, Takashi
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Applied sciences
Computer science
control theory
systems
Exact sciences and technology
Memory and file management (including protection and security)
Memory organisation. Data processing
partial integrity
privacy
Sanitizable signature scheme
Software
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creator Izu, Tetsuya
Kanaya, Nobuyuki
Takenaka, Masahiko
Yoshioka, Takashi
description In e-government or e-tax payment systems, appropriate alterations on digitally signed documents are required to hide personal information, namely privacy. Standard digital signature schemes do not allow such alternations on the signed documents since there is no means to distinguish appropriate alternations from inappropriate forgeries. The sanitizable signature scheme is a possible solution for such systems in which sanitizings of partial information are possible, after a signature is signed on the original (unsanitized) document. However, in previously proposed schemes, since sanitizers are anonymous, verifiers cannot identify sanitizers, and thus dishonest sanitizings are possible. This paper proposes a new sanitizable signature scheme “PIATS” in which partial information can be sanitized. Moreover, verifiers can identify sanitizers and thus dishonest sanitizings are eliminated.
doi_str_mv 10.1007/11602897_7
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source Springer Books
subjects Applied sciences
Computer science
control theory
systems
Exact sciences and technology
Memory and file management (including protection and security)
Memory organisation. Data processing
partial integrity
privacy
Sanitizable signature scheme
Software
title PIATS: A Partially Sanitizable Signature Scheme
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