By Bitcoin Magazine - 5 months ago - Ħin tal-Qari: 3 minuti
MuSig2 Huwa Lest Pendenti Żewġ BIPs Ġodda: Nintroduċu Era Ġdida Ta’ Privatezza Multisig
Traditionally, creating an n-of-n multisig using CHECKMULTISIG means you’ll publish a proportional number of signatures and public keys on the blockchain to signers in the transaction. This approach not only reveals the total number of participants in the transaction, but also incurs progressively higher transaction fees as the number of signers grow. MuSig, on the other hand, allows a group of users to kollettivament generate a single signature and public key to validate a transaction, which enhances privacy and lowers the transaction costs for all the signers involved.
When MuSig was initially introduced in 2018, its main shortcoming compared to CHECKMULTISIG was user experience, specifically the requirement for three rounds of interactive communication between signers. With the introduction of MuSig2 (PGD 327) in 2020, as the successor to the 2018 MuSig (also called MuSig1), we made significant progress in non-interactive signing, bringing us a much more desired experience.
Kif Xogħlijiet
Filwaqt li tirrifletti l-funzjonalità tal-predeċessur tagħha, MuSig2 inaqqas ir-rawnds ta 'komunikazzjoni meħtieġa minn tlieta għal tnejn. Is-setup tal-kartiera għal MuSig2 tibda billi tiġbor iċ-ċwievet pubbliċi estiżi kollha tal-parteċipanti (xpubs), u l-kostruzzjoni ta 'deskritturi minn kull wieħed mill-kartieri, li kollha huma konsistenti mal-prattiki multisig eżistenti.
Il-fażi tal-iffirmar ta' MuSig2 imbagħad tinkludi:
First-Round Message: During the wallet setup, nonces are generated, added to the Partially Signed Bitcoin Transactions (PSBTs), and shared amongst the other signers.Second-Round Message: The nonces received are used to create a partial signature and are sent back to each of the other signers.Alternattiva biex kull firmatarju jikkomunika direttament in-noce u l-firma parzjali tiegħu lil kull firmatur ieħor huwa li jiġi introdott koordinatur ta 'parti terza biex jissimplifika l-proċess ta' komunikazzjoni.
In the signing process, each signer's nonce is composed of two elliptic curve points. These points are transmitted to other signers through the Partially Signed Bitcoin Transactions (PSBTs). These nonces require careful handling for accuracy and integrity in the process, but secure storage is not necessary since they are not confidential information. If all the individuals partial signatures are valid, then the produced Schnorr signatures are valid.
Il-Passi li jmiss għall-Implimentazzjoni
L-aħħar xahar, Andy Chow put forward two BIP drafts, MuSig2 PSBTs u, MuSig2 Descriptors, which are a necessary step in MuSig2 adoption and wallet integration. The first BIP adds fields for the nonces, public keys, and partial signatures in the PSBTs, and the second BIP provides a method for describing transaction outputs that are controlled by a MuSig2 wallet. Together, these BIPs and specifications are all we need for integration of MuSig2 wallets!
Many wallet developers and collaborative custody soluzzjonijiet have long requested this standardization of the MuSig2 protocol. Now, with the formalized BIPs in place, it's in the community's hands to review, give feedback, and help raise awareness. At Blockstream, we look forward to participating in the public discussions and letting the formal BIP review process take place.
This is a guest post by Kiara Bickers. Opinions expressed are entirely their own and do not necessarily reflect those of BTC Inc or Bitcoin Magazine.
Sors oriġinali: Bitcoin Magazine