A cryptographic protocol that enables signers to stay anonymous among multiple public keys in a ring. Borromean ring signatures are used in Liquid to enhance privacy by protecting the sender's identity and allowing for verification that at least one party from a predefined set signed a message without disclosing the specific signer's identity.
To generate a Borromean ring signature in Liquid, the signer first selects a group of possible signers. This group is the ring. The ring should include the signer's public key and several other public keys owned by other users. The larger the ring, the more privacy it provides.
Learn more about Borromean ring signatures by reading the official whitepaper.