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Possible spell-corrected query: black digital signature
2013/130 (PDF) Last updated: 2013-12-11
Blank Digital Signatures
Christian Hanser, Daniel Slamanig
Public-key cryptography

In this paper we present a novel type of digital signatures, which we call blank digital signatures. The basic idea behind this scheme is that an originator can define and sign a message template, describing fixed parts of a message as well as multiple choices for exchangeable parts of a message. One may think of a form with blank fields, where for such fields the originator specifies all the allowed strings to choose from. Then, a proxy is given the power to sign an instantiation of the...

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