Blind Collective Signature Protocol

Using the digital signature (DS) scheme specifled by Belarusian DS standard there are designed the collective and blind collective DS protocols. Signature formation is performed simultaneously by all of the assigned signers, therefore the proposed protocols can be used also as protocols for simultaneous signing a contract. The proposed blind collective DS protocol represents a particular implementation of the blind multisignature schemes that is a novel type of the signature schemes. The proposed protocols are the flrst implementations of the multisignature schemes based on Belarusian signature standard.