P256K.MuSig.AggregateSignature

64-byte BIP-340 Schnorr signature produced by aggregateSignatures(_:) from all signers’ P256K.Schnorr.PartialSignature values; verifiable against the MuSig2 aggregate public key.

iOS 13.0+
macCatalyst 13.0+
macOS 10.15+
tvOS 13.0+
visionOS 1.0+
watchOS 6.0+

struct AggregateSignature

Overview

The aggregate signature is a standard BIP-340 Schnorr signature and verifies with secp256k1_schnorrsig_verify against the P256K.MuSig.XonlyKey from aggregate(_:). This is what makes MuSig2 useful: downstream verifiers cannot distinguish an aggregate from a single-signer BIP-340 signature.

Important

secp256k1_musig_partial_sig_agg returning 1 does not guarantee the resulting signature is valid — always verify with isValidSignature(_:for:).

Topics