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Results tagged with signature
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user 24237
Algorithms and protocols for creating signatures to documents, and verifying such signatures. These are normally asymmetric, for symmetric signatures see [mac].
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answer
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Can Alice prove that she *did not* send an unsigned message to Bob?
Bob can always claim that the fake message was not signed by Alice because then Bob could publish the signature along with the message and prove to the public that the message came from Alice. …
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