Collaborative signature method and device, electronic equipment and storage medium

The invention provides a collaborative signature method and device, electronic equipment and a storage medium, and the method comprises the steps: generating a first public key component according to a first private key fragment, and transmitting the first public key component to a second participant; the first private key fragment is a private key fragment corresponding to the first participant; receiving a signature public key obtained by the second participant based on the first public key component; obtaining certificate request information according to the signature public key; obtaining a first signature fragment according to the certificate request information, and sending the first signature fragment to the second participant; receiving a second signature fragment obtained by the second participant based on the first signature fragment, and generating a signature result according to the second signature fragment; or receiving a signature result obtained by the second participant based on the first sig