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CRYPTO
2000
Springer

Provably Secure Partially Blind Signatures

10 years 8 months ago
Provably Secure Partially Blind Signatures
Partially blind signature schemes are an extension of blind signature schemes that allow a signer to explicitly include necessary information (expiration date, collateral conditions, or whatever) in the resulting signatures under some agreement with the receiver. This paper formalizes such a notion and presents secure and efficient schemes based on a widely applicable method of obtaining witness indistinguishable protocols. We then give a formal proof of security in the random oracle model. Our approach also allows one to construct secure fully blind signature schemes based on a variety of signature schemes.
Masayuki Abe, Tatsuaki Okamoto
Added 02 Aug 2010
Updated 02 Aug 2010
Type Conference
Year 2000
Where CRYPTO
Authors Masayuki Abe, Tatsuaki Okamoto
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