Puncturable signature

Puncturable digital signature schemes are a variant of digital signatures, which allow the signing key to be 'punctured'. Puncturing a signing key at a specific message $m^{*}$ allows the owner of the punctured signing key to produce signatures for all other messages except $m^{*}$. They were introduced by Mihir Bellare, Igors Stepanovs and Brent Waters at Eurocrypt 2016.

Blockchain proof-of-stake consensus protocols are a possible application of these signature schemes.

References

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