Questions tagged [musig]

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Who will the first adopters of Taproot be (assuming it is activated at some stage)? What incentives are there to start using it straight away?

Adoption of SegWit by users and companies after it was activated was slow. Should we expect adoption of Taproot to be slow also (assuming it is activated at some stage)? Who will the first adopters of ...
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1answer
51 views

Which MuSig scheme is optimal? Classic MuSig or this new MuSig-DN scheme?

Now we have two competing MuSig schemes which is better? Classic MuSig or MuSig-DN? Which use case(s) might choose classic MuSig over MuSig-DN and vice versa?
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1answer
39 views

Schnorr without R in the challenge

I read the Schnorr and MuSig papers and stumbled over the problem that the use of deterministic nonces in multisignatures is not safe. The adversary would be able to extract the private key from the ...
1
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1answer
43 views

Is Z-man's PTLC construction implementable using libsecp256k1-zkp?

In a mailing list post Z-man details a PTLC construction which he claims is "is almost entirely a MuSig ritual". My question is whether this MusigTweak is what is called the adaptor (last argument of ...
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0answers
13 views

Use cases for 1-of-1 musig

I noticed that it is possible to make a 1-of-1 musig. Given that the API still allows you to tweak by an adaptor as with PTLC's, I was wondering what uses a 1-of-1 musig could have. Answers need not ...
12
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1answer
568 views

Musig Signature Interactivity

2 Questions: Why is Musig signing always interactive? Let's say I have a Musig wallet where keys are stored in secure locations with no internet access. What are some methods to sign from these ...
7
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2answers
318 views

How could Schnorr signatures be aggregated across the whole transaction?

I am studying the MuSig protocol and am having trouble grasping certain segments. This is my understanding thus far: In current Bitcoin CHECKMULTISIG format, the size of the signature grows linearly ...
6
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1answer
180 views

Does MuSig have the same security as 2-2 multisig?

Disclaimer: This question is of theoretical importance to me trying to educate myself better on cryptographic principles and signature schemes. I don't intend to imply that in practice schnorr ...
1
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1answer
126 views

Can R/r in Musig be derived from only seeds and message hashes?

I am wondering if the first two roundtrips of pre-committing and then revealing R/r in MuSig signing can be moved to the keygen phase and made deterministic. That reduces the amount of messages that ...