Unpredictable blind signature systems
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United States of America Patent
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-
Feb 5, 1991
Grant Date -
N/A
app pub date -
May 4, 1989
filing date -
May 4, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Blind signature systems secure against chosen message attack are disclosed. Multiple candidate original messages can be accommodated. Each of plural candidates in the final signature can be marked by the party issuing the signature in a way that is unmodifiable by the party receiving the signatures. The exponents on the candidates in the final signature need not be predictable by either party. In some embodiments, these exponents are not at all or are only partly determined by the candidates in the signature shown. Single candidate signatures are also accommodated.
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