Unpredictable blind signature systems

Details Unpredictable blind signature systems Unpredictable blind signature systems

1989-05-04

1991-02-05

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Public key

380 23, 380 25, 380 28, 380 49, H04L 930

Patent

active

049912100

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.

REFERENCES:
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patent: 4424414 (1984-01-01), Hellman et al.
patent: 4458109 (1984-07-01), Mueller-Schloer
patent: 4731841 (1988-03-01), Rosen et al.
patent: 4759063 (1988-07-01), Chaum
patent: 4759064 (1988-07-01), Chaum
patent: 4811393 (1989-03-01), Hazard

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