Selected-exponent signature systems

Details Selected-exponent signature systems Selected-exponent signature systems

1989-06-21

1991-02-26

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Public key

380 9, 380 23, 380 25, 380 49, H04L 930

Patent

active

049967118

ABSTRACT:
Digital signature techniques are disclosed in which exponents may be selected by the message to be signed itself, by the signing party, by the party providing the message to the signing party for signature, and/or by a party to whom the signature is shown. When a message selects the exponent(s), the need for "hash functions" in known signature schemes is overcome. When the exponent is chosen by the party receiving the signature, to take another example, computation, storage and bandwidth requirements of known one-show blind signature systems may be improved. Also, the bank cannot falsely incriminate a payer for showing a signature more than once, even if the bank has unlimited computing resources.

REFERENCES:
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patent: 4351982 (1982-09-01), Miller et al.
patent: 4405829 (1983-09-01), Rivest et al.
patent: 4424414 (1984-01-01), Hellman et al.
patent: 4458109 (1984-07-01), Mueller-Schloer
patent: 4759063 (1988-07-01), Chaum
patent: 4759064 (1988-07-01), Chaum

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