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authorSamuel Dobson <dobsonsa68@gmail.com>2022-01-21 21:54:52 +1300
committerSamuel Dobson <dobsonsa68@gmail.com>2022-01-21 21:59:30 +1300
commitd58f2b29f7afcb1f72837c5283c329ee330c5889 (patch)
treef700444ea9f528e1c1275df0db375bb231084970 /bip-0340.mediawiki
parent02de475efc528058bd04a0c4ad31b6422aed5f5f (diff)
downloadbips-d58f2b29f7afcb1f72837c5283c329ee330c5889.tar.xz
BIP340: fix broken link to Schnorr's blind signature attack
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@@ -233,7 +233,7 @@ Adaptor signatures, beyond the efficiency and privacy benefits of encoding scrip
=== Blind Signatures ===
-A blind signature protocol is an interactive protocol that enables a signer to sign a message at the behest of another party without learning any information about the signed message or the signature. Schnorr signatures admit a very [https://www.math.uni-frankfurt.de/~dmst/research/papers/schnorr.blind_sigs_attack.2001.pdf simple blind signature scheme] which is however insecure because it's vulnerable to [https://www.iacr.org/archive/crypto2002/24420288/24420288.pdf Wagner's attack]. A known mitigation is to let the signer abort a signing session with a certain probability, and the resulting scheme can be [https://eprint.iacr.org/2019/877 proven secure under non-standard cryptographic assumptions].
+A blind signature protocol is an interactive protocol that enables a signer to sign a message at the behest of another party without learning any information about the signed message or the signature. Schnorr signatures admit a very [http://publikationen.ub.uni-frankfurt.de/files/4292/schnorr.blind_sigs_attack.2001.pdf simple blind signature scheme] which is however insecure because it's vulnerable to [https://www.iacr.org/archive/crypto2002/24420288/24420288.pdf Wagner's attack]. A known mitigation is to let the signer abort a signing session with a certain probability, and the resulting scheme can be [https://eprint.iacr.org/2019/877 proven secure under non-standard cryptographic assumptions].
Blind Schnorr signatures could for example be used in [https://github.com/ElementsProject/scriptless-scripts/blob/master/md/partially-blind-swap.md Partially Blind Atomic Swaps], a construction to enable transferring of coins, mediated by an untrusted escrow agent, without connecting the transactors in the public blockchain transaction graph.