Blind signature systems
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United States of America Patent
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Jul 19, 1988
Grant Date -
N/A
app pub date -
Aug 22, 1983
filing date -
Aug 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cryptographic system allows, in one exemplary use, a supplier to cryptographically transform a plurality of messages responsive to secret keys; the transformed messages to be digitally signed by a signer; and the signed transformed messages returned to the supplier to be transformed by the supplier, responsive to the same secret keys, in such a way that a digital signature related to each original message is developed by the supplier. One important property of these systems is that the signer cannot determine which transformed message received for signing corresponds with which digital signature--even though the signer knows that such a correspondence must exist.
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