Definition
The key feature of blind signature schemes is that the sender and the signer of the message are two distinguished entities. In particular, given a message m sent by a sender, blind signature has the nice property that the signer digitally signs a blinded version of m, i.e., m′, without the disclosure of any information about the original message. The obtained blind signature can be then verified by using the public key of the signer and the original message m, instead of m′.
Key Points
In 1982, David Chaum introduced the concept of blind signatures for protecting user privacy during electronic payment transactions [1]. This scheme has been devised for scenarios where the sender and the signer of the message are two distinguished entities, with the aim of preventing the signer from observing the message he or she signs. More precisely, given a message m generated by A, a signer B is able to digitally sign a blinded version of m′, i.e., DSB(m′), without the disclosure of any...
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Recommended Reading
Chaum D. Blind signatures for untraceable payments. In: Advances in Cryptology Proceedings of Crypto 82; 1983. p. 199–203.
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Carminati, B. (2018). Blind Signatures. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_1488
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DOI: https://doi.org/10.1007/978-1-4614-8265-9_1488
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