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Blind signatures are online by definition. They involve at least two independent parties that interact during the signature generation process. A protocol is "online" if a successful execution of the protocol requires an exchange of messages between two or more independent parties. Consequently, no application of blind signatures, including a digital cash ...


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The first google-entry brought up this paper. To answer your questions: An anonymous signature is a signature that is unforgeable in the classic sense. But without the message no informations about the signer can be extracted from the signature even if brute-force of all public keys is possible. If I'm understanding things correctly, a blind signature ...


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Zerocash is such a decentralized currency scheme. A Zerocash transaction completely hides the origin, amount, and destination of the transaction. It achieves this via a cryptographic tool called a zkSNARK, which effectively allows you to prove the validity of a statement in "zero knowledge", i.e. you leak nothing more than the truth of the statement. In ...



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