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Quotable Signatures for Authenticating Shared Quotes. (arXiv:2212.10963v1 [cs.CR])
Dec. 22, 2022, 2:10 a.m. | Joan Boyar, Simon Erfurth, Kim S. Larsen, Ruben Niederhagen
cs.CR updates on arXiv.org arxiv.org
Quotable signatures are digital signatures that allow a user to quote parts
of a signed document, permitting a reader of the quote to verify its
authenticity. This paper adds to the theory on {quotable signatures} in three
ways: (1) by giving bounds on the size of signatures for arbitrary and
contiguous quotes, when the quotable signatures are realized using Merkle
trees, (2) by proving the security of quotable signature realized using Merkle
trees, and (3) by providing algorithms for signing, …
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