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musig2: fix early nonce gen option
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Previously the early nonce generation option was not being respected
when creating the context, with the WithKnownSigners option being
used. This commit fixes that.
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sputn1ck committed Jul 11, 2023
1 parent f5eeb10 commit 8f84bb0
Showing 1 changed file with 13 additions and 14 deletions.
27 changes: 13 additions & 14 deletions btcec/schnorr/musig2/context.go
Original file line number Diff line number Diff line change
Expand Up @@ -234,24 +234,23 @@ func NewContext(signingKey *btcec.PrivateKey, shouldSort bool,
opts.keySet = make([]*btcec.PublicKey, 0, opts.numSigners)
opts.keySet = append(opts.keySet, pubKey)

// If early nonce generation is specified, then we'll generate
// the nonce now to pass in to the session once all the callers
// are known.
if opts.earlyNonce {
var err error
ctx.sessionNonce, err = GenNonces(
WithPublicKey(ctx.pubKey),
WithNonceSecretKeyAux(signingKey),
)
if err != nil {
return nil, err
}
}

default:
return nil, ErrSignersNotSpecified
}

// If early nonce generation is specified, then we'll generate the
// nonce now to pass in to the session once all the callers are known.
if opts.earlyNonce {
var err error
ctx.sessionNonce, err = GenNonces(
WithPublicKey(ctx.pubKey),
WithNonceSecretKeyAux(signingKey),
)
if err != nil {
return nil, err
}
}

return ctx, nil
}

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