Schnorr signatures

Schnorr signatures are digital signatures that provide similar security to the ECDSA scheme used since Bitcoin’s original implementation and which can use Bitcoin’s same elliptic curve parameters, but which can provide other benefits.

Schnorr is secure under the same cryptographic assumptions as ECDSA and it is easier and faster to create secure multiparty signatures using schnorr with protocols such as MuSig. A new signature type also provides an opportunity to change the signature serialization format from BER/DER to something that’s more compact and simpler to implement.